Shade
Monster Junkie
This is an attempt to gather all the monsters from OD&D, in case someone wants to start a conversion thread. 
I gathered this information from various web sources, so I'm bound to be missing a few critters here and there. Also, I believe these are from the latest releases of OD&D, so there may be a few earlier critters missing as well.
OD&D Basic Set
Ant, Giant
Ape, White
Baboon, Rock
Bandit
Bat, Giant
Bat, Normal
Bear, Black
Bear, Grizzly
Bear, Polar
Bear, Cave
Bee, Giant
Beetle, Giant, Fire
Beetle, Giant, Tiger
Beetle, Giant, Oil
Berserker
Boar
Bugbear
Carrion Crawler
Cat, Great, Mountain Lion
Cat, Great, Panther
Cat, Great, Lion
Cat, Great, Tiger
Cat, Great, Sabre-Tooth Tiger
Centipede, Giant
Doppelganger
Dragon (various)
Elf
Ferret, Giant
Gargoyle
Gelatinous Cube
Ghoul
Gnoll
Gnome
Goblin
Gray Ooze
Green Slime
Halfling
Harpy
Hobgoblin
Human
Kobold
Living Statue, Crystal
Living Statue, Iron
Living Statue, Rock
Lizard, Giant, Gecko
Lizard, Giant, Draco
Lizard, Giant, Horned
Lizard, Giant, Tuatara
Lizard Men
Lycanthrope (various)
Medusa
Minotaur
Mule
Neaderthal
Normal Human
NPC Party
Ochre Jelly
Ogre
Orc
Owlbear
Pixie
Rat, Normal
Rat, Giant
Robber Fly
Rust Monster
Shadow
Shrew, Giant
Shrieker
Skeleton
Snake, Spitting Cobra
Snake, Giant Racer
Snake, Pit Viper
Snake, Sea Snake
Snake, Giant Rattler
Snake, Rock Python
Spider, Giant, Crab Spider
Spider, Giant, Black Widow
Spider, Giant, Tarantella
Sprite
Stirge
Thoul
Troglodyte
Wight
Yellow Mold
Wolf, Normal
Wolf, Dire
Zombie
OD&D Expert Set
Animal Herd (various)
Basilisk
Black Pudding
Blink Dog
Caecilia
Camel
Centaur
Chimera
Cockatrice
Crab, Giant
Crocodile, Normal
Crocodile, Large
Crocodile, Giant
Cyclops
Devil Swine
Displacer Beast
Djinni (Lesser)
Dryad
Efreeti (Lesser)
Elemental (various)
Elephant, Normal
Elephant, Prehistoric (Mammoth or Mastodon)
Fish, Giant Bass
Fish, Giant Rockfish
Fish, Giant Sturgeon
Giant, Hill
Giant, Stone
Giant, Frost
Giant, Fire
Giant, Cloud
Giant, Storm
Golem (various)
Golem, Wood
Golem, Bone
Golem, Amber
Golem, Bronze
Gorgon
Griffon
Hellhound
Hippogriff
Horse, Riding
Horse, War
Horse, Draft
Hydra
Insect Swarm
Invisible Stalker
Leech, Giant
Manticore
Men
Merman
Mummy
Nixie
Pegasus
Pterodactyl
Pteranodon
Purple Worm
Rhagodessa
Roc
Salamander, Flame
Salamander, Frost
Scorpion, Giant
Spectre
Termite, Water
Toad, Giant
Treant
Triceratops
Troll
Tyrannosaurus Rex
Unicorn
Vampire
Wraith
Wyvern
OD&D Companion Set
Aerial Servant
Beholder
Blast Spore
Djinni, Greater
Dolphin
Dragon (various)
Dragon Turtle
Efreeti, Greater
Gargantua
Golem, Drolem
Golem, Mud
Golem, Obsidian
Gremlin
Haunt, Banshee
Haunt, Ghost
Haunt, Poltergeist
Helion
Horde
Hydrax
Grab Grass
Kryst
Malfera
Manscorpion
Manta Ray
Manta Ray, Giant
Mujina
Phantom, Apparition
Phantom, Shade
Phantom, Vision
Plasm
Rock (Cave) Toad
Shark, Bull
Shark, Mako
Shark, Great White
Snow Ape
Spectral Hound
Spirit, Druj
Spirit, Odic
Spirit, Revenant
Undine
Weasel, Giant
Whales, Killer
Whales, Narwhal
Whales, Sperm
OD&D Master Set
Acateon
Adaptor
Archon
Athach
Beholder, Undead
Blackball
Devilfish
Dinosaur
Dragons, Gem, Crystal
Dragons, Gem, Onyx
Dragons, Gem, Jade
Dragons, Gem, Sapphire
Dragons, Gem, Ruby
Dragons, Gem, Tiger's Eye (Brown)
Dragon Ruler
Drake
Elemental Ruler
Faerie
Giant, Mountain
Giant, Sea
Hag, Black
Had, Sea
Hsiao
Headsman/thug
Mystic
Lich
Lycanthrope, Werebat
Lycanthrope, Werefox
Lycanthrope, Wereseal
Mek
Metamorph
Nekrezon
Nightshade
Nucklavee
Ooze, Lava
Phoenix
Revener
Sasquatch
Slug, Giant
Sphinx
Spider, Planar
Sporacle
OD&D Immortals Set
Baaka
Demon, Entropy - Croaking (Swamp Demon, Gobbler)
Demon, Entropy - Groaning (Forest Demon, Biter)
Demon, Entropy - Hissing (Water Demon, Destroyer)
Demon, Entropy - Howling (Fire Demon, Four-Armed Horror)
Demon, Entropy - Roaring (Mountain Demon, Manslayer)
Demon, Entropy - Screaming (Air Demon, Winged Fury)
Demon, Entropy - Whispering (Charmer, Grey Deceiver)
Diabolus
Draeden
Dragon, Dragon Ruler
Elemaster
Flicker
Immortals
Jumper
Megalith
Nightmare Creatures
Nipper
Notion
Phoenix, Greater
Phoenix, Lesser
Protean, Astral
Protean, Local (Giant)
Repeater (Ditto)
Soo
Titan
Tonal, Breve
Tonal, Crotchet
Tonal, Minim
Tonal, Quaver
Tonal, Semibreve
Tonal, Semiquaver
Vortex Creatures
B3 – Palace of the Silver Princess
Archer Bushes
Baric
Bubbles
Decapus
Diger
Ghost
Giant Marble Snake
Jupiter Blood Sucker
Monkey, Giant Marmoset
Poltergeist
Protectors
Purple Moss
Ubue
B4 – The Lost City
Banshee
Cynidiceans
Lycanthrope, Werefox
Polymar
B6 – The Veiled Society
Sirenflower
Champions of Mystara Boxed Set
Sky Wyrm (lesser & greater)
Night Dragon (lesser & greater)
Rakasta
Cestian Gobbler
Aranea
Karwana Mulunba
Mugumba
CM3 – Sabre River
Sabreclaw
CM6 – Where Chaos Reigns
Oard
Garl (Caveman)
Hephaeston
DA3 – City of the Gods (Blackmoor)
Camarilla
Cyborg
Gakarak
Garl
Geonid
Grazer
Herex
Hide Hunter (Human)
Hook Beast (Hook Horror, Hulker)
Robots (Dbot, Sbot, Ebot, Ubot)
Quarg
Roper
Sand Folk
DA4 – The Duchy of Ten (Blackmoor)
Brother of the Greenwood (Human)
Dolphin
Dragon Turtle
Gakarak
Gator Man
Grazer
Handmaiden of Death (Human)
Hide Hunter (Human)
Lava Lizard
Roper
Sister of Fire (Human)
Skandaharian Raider (Human)
Sollux (Sun Brother)
Soul Eater
GAZ3 - The Principalities of Glantri
Imp, Red Imp
Imp, Blue Imp
Manikin (in the CC as Mandragora)
Nosferatu (reprinted from Gaz1)
Vampire Rose (reprinted from B3)
GAZ8 - The Five Shires
Deep Glaurant
Feywing
Nightgleet
Rockfang
Seergar
Wychlamp
GAZ12 - Ethengar Khanates
Lesser Animal Spirit
Greater Animal Spirit
Spirit Lord
Evil Spirit
Nature Spirit
Spirit Skeleton
Cat, Wild
Chameleon Lizard
Dog
Eagle
Falcon
Giant Boar
Gerbil
Goat, Wild
Hawk
Horse, Nag
Horse, Poor Light War
Horse, Normal Light War
Horse, Superior Light War
Monkey
Owl
Sheep
Swan
Yak
GAZ13 - Shadowelves
Skinwing
Boneless
Darksnap
Hollow World Boxed Set
Allosaurus
Ankylosaurus
Apatosaurus (Brontosaurus)
Archaeopteryx
Aurochs
Automatons of the Blacklore Valley
Cave Bear
Bison, Giant
Giant Eagle (Hiak)
Flapsail
Ichthyosaurus
Foot-pad Lizard
Lizard, Thumper
Mammoth, Wooly
Pachycephalosaurus
Phobosuchus
Pisanosaurus
Plesiosaurus
Pteranodon, Giant
Ponies, Krugel
Pterosaur, Small, Medium & Large
Reindeer, Giant
Small Riding Animals
Somnastis Plant
Stegosaurus
Triceratops
Tyrannosaurus Rex
Viper, Flying
Wolves, Artic
Sun-Wight
Were-Sabretooth
Frost-Zombie
Bounder
HWA1 - Nightwail
Discorporate
Giant Annelid
Gridbug
HWA3 - Nightstorm
Ganetra Golem
HWR1 - Sons of Azca
Archelon
Baluchitherium
Gruquotec
Feathered Serpent
Hyenodon
Lycanthrope, Werejaguar
Moan Bird
Nothosaurus
Tanystropheus
Tepictoton
Tzitzimitl
HWR3 - The Milenian Empire
Agrisian Jellyfish
Amorian Hound
Shaggy Auroch
Zargosian Bat
Zargosian Changeling
Kingdom of Nithia
Chimer
Refractor
Sand Star
Dream-hunter
M2 – Vengeance of Alphaks
Beetle, Earthquake
Pegataur
Milenian Sceptre
Karakos the Zargostan Hydra
Lyadrachnus
PC1 - Tall Tales of the Wee Folk
Brownie
Redcap
Centaur
Dryad
Faun
Hsiao
Leprechaun
Pixie
Pooka
Sidhe
Sprite
Treant
Wood Imp
Wood Drake
PC2 – Top Ballista (accessory; not a module)
Faenare
Gnomes
Gremlins
Harpies
Nagpa
Pegataurs
Pig-headed Hydra
Sphinxes
Tabi
2-Headed Crocotroll
Undead Mass
Undead Sphimera
Undead Pegataur
PC3 - Sea People
Nixie
Merrow
Aquatic Elf
Shark-kin
Triton
Kna
Kopru
Sea Giant
Devil Fish
X1 – Isle of Dread
Allosaurus
Ankylosaurus
Aranea
Brontosaurus
Dimetrodon
Elk (Giant)
Grangeri
Kopru
Megatherium
Native (humans)
Phanaton
Phororhacos (“Sword Beak”)
Plesiosaurus
Rakasta
Trachodon
X2 – Castle Amber
Amber Lotus Flowers
Amoeba, Giant
Aranea
Brain Collector
Death Demon
Golem, Mud
Grab Grass
Gremlin
Killer Trees
Lupin
Magen (Hypnos, Demos, Caldron, Galvan)
Pagan
Phantoms
Rakasta
Slime Worm
Sun Brother
Vampire Roses
X4 – Master of the Desert Nomads
Bhut
Juggernaut
Nagpa
Soul Eater
Tabi
X5 – Temple of Death
Dusanu
Geonid
Malfera
Mujina
Spectral Hound
X6 – Quagmire!
Fish, Giant (Giant Piranha, Giant Catfish)
Grab Grass
Killer Trees
Piranha Bird
Pocket Dragon
Spider, Giant Hunting
X7 – War Rafts of Kron
Dolphin
Dragon Turtle
Eel (Electric, Giant)
Gargantua
Sea Horse
Giant Jellyfish (Marauder, Man-0- War)
Manta Ray (Normal, Giant)
Giant Octopus
Sea Serpent (Lesser, Greater)
Shark (Bull, Mako, Great White)
Squid Giant
Triton
Velya
Whales (Killer, Narwhal, Sperm)
AC9 – Creature Catalouge
Actaeon
Adaptor
Aerial Servant (Haoou)
Agarat
Allosaurus
Amber Golem
Amber Lotus Flower
Amir (Greater Efreeti)
Amoeba, Giant
Animal Herd
Ankylosaurus
Ant, Giant
Ape, Snow
Ape, White
Apparition (Phantom)
Aquatic Beholder
Aquatic Elf
Aranea
Archer Bush
Archon
Ash Crawler
Athach
Baboon, Rock
Baldandar
Bandit (Man)
Banshee (Haunt)
Banshee, Lesser
Barbarian (Man)
Bargda
Basilisk
Bass, Giant (Fish)
Bat, Normal
Bat, Giant
Bat, Giant Vampire
Bear, Black
Bear, Cave
Bear, Grizzly
Bear, Polar
Bee, Giant
Beetle, Earthquake
Beetle, Giant Fire
Beetle, Giant Oil
Beetle, Giant Tiger
Beholder
Beholder, Aquatic
Beholder, Undead
Bekkah
Berserker (Man)
Bhut
Black Bear
Black Dragon
Black Hag
Black Pudding
Black Widow Spider, Gt.
Blackball
Blast Spore
Blink Dog
Blue Dragon
Boar, Wild
Bodendruker (Leveller)
Bone Golem
Brain Collector
Brigand (Man)
Brontosaurus
Bronze Golem
Brown Dragon
Buccaneer (Man)
Bugbear
Bull Shark
Caecilia
Caldron (Magen)
Camel
Carp, Gargantuan
Carrion Crawler
- Gargantua
Cat, Great
Catfish, Giant
Cave Bear
Cave Toad
Cay-man
Centaur
Centipede, Giant
Chameleon Man
Chameleon Lizard, Giant
Cheetah
Chevall
Chimera
Cloud Giant
Cobra, Spitting, Snake
Cockatrice
Cockrobin (Gyerian)
Colddrake
Crab, Giant
Crab Spider, Giant
Crocodile, Normal
Crocodile, Giant & Large
Crone of Chaos
Crow, Normal & Large
Cryion
Crystal Dragon
Crystal Living Statue
Cyclops
Cynidicean
Dark-Hood (Rorphyr)
Dark Wing
Deadly Sphere (Blackball)
Death Demon
Death Leech
Decapus (Land & Marine)
Demos (Magen)
Dervish (Man)
Desert Ghost
Desert Leviathan
Devil Swine
Devilfish
Diamond Dragon
Dinosaur
- Allosaurus
- Ankylosaurus
- Brontosaurus
- Titanothere
- Tylosaurusus
Dinosaur, Aquatic
Dinosaur, Flying
Dinosaur, Carnivore
Dinosaur, Herbivore
Dire Wolf
Displacer Beast
Djinni, Greater (Pasha)
Djinni, Lesser
Dog, Normal & War
Dolphin
Doppleganger
Draco Lizard, Giant
Dragon, Black
Dragon, Blue
Dragon, Brown
Dragon, Crystal
Dragon, Diamond
Dragon, Gold
Dragon, Green
Dragon, Jade
Dragon, Onyx
Dragon, Opal
Dragon, Pearl
Dragon, Pocket
Dragon, Red
Dragon, Ruby
Dragon, Sapphire
Dragon, Sea
Dragon, The Great
Dragon, Undead
Dragon, White
Dragon, Ruler
Dragon, Turtle
Dragonfly, Black
Dragonfly, Blue
Dragonfly, Green
Dragonfly, Red
Dragonfly, White
Dragonne
Drake, Colddrake
Drake, Elemental
Drake, Mandrake
Drake, Woodrake
Drolem
Druj (Spirit)
Dryad
Dusanu
Dwarf
Eagle, Normal & Great
Earthquake Beetle
Eel, Electric
Eel, Giant Electric
Eel, Weed
Efreeti, Greater (Amir)
Efreeti, Lesser
Elder Ghoul
Electric Eel
Electric Eel, Giant
Elemental Drake
Elemental Ruler
Elemental, Air
Elemental, Earth
Elemental, Fire
Elemental, Water
Elephant
Elephant, Prehistoric
Elf
Elf, Aquatic
Elk, Giant
Faedorne
Faerie
Ferret, Giant
Fire Beetle, Giant
Fire Giant
Fish, Gargantua Carp
Fish, Giant Bass
Fish, Giant Catfish
Fish, Giant Piranha
Fish, Giant Rockfish
Fish, Giant Sturgeon
Fish, Piranha (Cold Water)
Flame Salamander
Flitterling
Fly, Robber
Flying Hydra
Footpad Lizard, Giant
Fresh Water Termite
Frog, Giant Poisonous
Frost Giant
Frost Salamander
Fundamental, Air
Fundamental, Earth
Fundamental, Fire
Fundamental, Water
Fungoid
Fylgar (Homunculus)
Fyrsnaca
Gakarak
Gargantua Carp
Gargantua
- Carrion Crawler
- Gargoyle
- Troll
Gargoyle
Gargoyle, Gargantua
Gargoyle, Iron
Garl
Gator Man
Galvan (Magen)
Gelatinous Cube
Geonid
Gecko Lizard, Giant
Ghost (Haunt)
Ghostly Horde
Ghoul
Ghoul, Elder
Ghoul, Vapour
Giant, Cloud
Giant, Fire
Giant, Frost
Giant, Hill
Giant, Mountain
Giant, Sea
Giant, Stone
Giant, Storm
Gnoll
Gnome
Goblin
Gold Dragon
Golem, Amber
Golem, Bone
Golem, Bronze
Golem, Mud
Golem, Obsidian
Golem, Rock
Golem, Silver
Golem, Wood
Gorgon
Grab Grass
Grangeri
Gray Ooze
Great Dragon, The
Great Eagle
Great White Shark
Green Dragon
Green Slime
Gremlin
Gretch (Homunculus)
Grev Philosopher
Griffon
Grizzly Bear
Guardian Warrior/Horse
Gyerian
Haoou (Aerial Servant)
Hag, Black
Hag, Sea
Halfling
Harpy
Haunt, Banshee
Haunt, Ghost
Haunt, Lesser
Haunt, Poltergeist
Hawk, Normal & Giant
Headsman (Man)
Helion
Hellhound
Herd Animal
Hephaeston
Herex
Hill Giant
Hippogriff
Hivebrood
Hobgoblin
Homonculus, Fylgar
Homonculus, Gretch
Homonculus, Ulzaq
Hook Beast, Hook Horror
Hook Beast, Hulker
Horde
Horse, Draft
Horse. Riding
Horse, War
Horse, Wild
Hound, Spectral
Hsiao
Hulker
Human
Hunting Spider, Giant
Huptzeen
Hutaakan
Hydra
Hydra, Flying
Hydra, Sea
Hydrax
Hypnos (Magen)
Hypnosnake
Ice Wolf
Imp, Wood
Insect Swarm
Invisible Stalker
Invisible Stalker (Sshai)
Iron Gargoyle
Iron Living Statue
Jade Dragon
Jade Living Statue
Jaguar
Jelly, Ochre
Jellyfish
Juggernaut, Stone
Juggernaut, Wood
Kal-Muru
Kara-kara
Killer Tree
Killer Whale
Kobold
Kna
Kopru
Kraken
Kryst
Lamara
Land Decapus
Lava Lizard
Lava Ooze
Leech, Giant
Lesser Banshee
Lesser Haunt
Leveller (Bodendruker)
Leviathan, Desert
Leviathan, Marine
Lich
Lion, Normal
Lion, Mountain
Lion, Spotted
Living Statue, Crystal
Living Statue, Iron
Living Statue, Jade
Living Statue, Rock
Living Statue, Rock/Ooze
Living Statue, Silver
Living Statue, Steel
Lizard Man
Lizard, Giant Chameleon
Lizard, Giant Draco
Lizard, Giant Footpad
Lizard, Giant Gecko
Lizard, Giant Tuatara
Locust, Giant
Lupin
Lotus Flower, Amber
Lycanthrope
- Werebat
- Werebear
- Wereboar
- Werefox
- Wererat
- Wereseal
- Wereshark
- Weretiger
- Werewolf
Lynx
Magen, Caldron
Magen, Demos
Magen, Galvan
Magen, Hypnos
Magpie, Normal
Magpie, Large
Malfera
Mako Shark
Malice
Man, Bandit
Man, Barbarian
Man, Berserker
Man, Brigand
Man, Buccaneer
Man, Dervish
Man, Headsman or Thug
Man, Isolated
Man, Mystic
Man, Native
Man, Noble
Man, Nomad
Man, Normal Human
Man, NPC Party
Man, Pagan
Man, Pirate
Man, Primitive
Man, Trader
Man, Wild
Man-O-War Jellyfish, Gt.
Mandrake
Manscorpion
Manta Ray, Normal
Manta Ray, Giant
Manticore
Marauder Jellyfish, Giant
Marine Decapus
Marine Leviathan
Masher
Mastodon
Medusa
Megatherium
Mek
Merman
Mesmer
Metamorph
Minotaur
Mold, Yellow
Mountain Giant
Mountain Lion
Mud Golem
Mujina
Mule
Mummy
Mystic (Man)
Nagpa
Narwha1
Native (Man)
Neanderthal
Nekrozon
Nightcrawler
Nightmare
Nightshade
Nightwalker
Nightwing
Nixie
Noble (Man)
Nomad (Man)
Normal Human
NPC Party
Nuckalavee
Oard
Obsidian Golem
Ochre Jelly
Octopus, Giant
Odic (Spirir)
Ogre
Oil Beetle. Giant
Onyx Dragon
Ooze, Gray
Ooze, Lava
Opal Dragon
Orc
Owl, Giant
Owl Bear
Oyster, Giant
Pachydermion
Pagan (Man)
Pasha (Grearer Djinni)
Panther
Pearl Dragon
Pegasus
Pegataur
Phanaton
Phantom, Apparition
Phantom, Lesser
Phantom, Shade
Phantom, Vision
Philosopher, Grey
Phoenix, Gtr. & Lsr.
Phororhacos (Sword Beak)
Phygorax
Piranha (Cold-Water)
Piranha, Giant
Piranha Bird, Greater
Piranha Bird, Lesser
Pirate (Man)
Pit Viper. Snake
Pixie
Planar Spider
Plasm, Normal & Giant
Poisonous Frog, Giant
Polar Bear
Pocket Dragon
Poltergeist (Haunt)
Polymar
Porcupine, Giant
Possession
Primitive Man
Pteranadon
Pterodactyl
Purple Worm
Python, Rock
Qaurik
Racer Snake, Giant
Raudara
Rakasta
Rat, Normal & Giant
Rattler Snake, Giant
Raven, Normal & Large
Red Dragon
Red Worm
Reflecter
Revenant (Spirit)
Revener
Rhagodessa
Rattler Snake, Rock
Rhinoceros, Normal
Rhinoceros, Woolly
Robber Fly
Roc, Giant, Large & Small
Rock/Ooze Living Statue
Rock Baboon
Rock Golem
Rock Man
Rock Python, Snake
Rock Rattler, Snake, Gt.
Rock Toad
Rockfish, Giant
Rooster (Gyerian)
Roper
Rorphyr (Dark-hood)
Ruby Dragon
Rust Monster
Sabreclaw
Sabre-Tooth Tiger
Sacrol
Salamander, Flame
Salamander, Frost
Salt Water Termite
Sand Spider, Giant
Sapphire Dragon
Sasquatch
Scamille
Scorpion, Normal
Scorpion, Giant
Scorpion, Manscorpion
Sea Dragon
Sea Giant
Sea Hag
Sea Horse
Sea Hydra
Sea Serpent, Greater
Sea Serpent, Lesser
Sea Snake
Serpentweed, Giant
Shade (Phantom)
Shadow
Shargugh
Shark-Kin
Shark, Bull
Shark, Great White
Shark, Mako
Shark, Vamora
Shrew, Giant
Shrieker
Shroud Spider, Giant
Silver Golem
Silver Living Statue
Silver Warrior
Sirenflower
Sis'thik
Skeleton
Skunk, Normal & Giant
Slime, Green
Slime Worm
Slug, Giant
Snake, Giant Racer
Snake, Giant Rattler
Snake, Pit Viper
Snake, Rock Python
Snake, Rock Rattler
Snake, Rock Rattler, Gt.
Snake, Sea
Snake, Spitting Cobra
Snapper
Snow Ape
Sollux (Sun Brother)
Soul Eater
Steel Living Statue
Stone Juggernaut
Spectral Hound
Spectre
Sperm Whale
Sphinx
Spider, Gt. Black Widow
Spider, Giant Crab
Spider, Giant Hunting
Spider, Giant Sand
Spider, Giant Shroud
Spider, Giant Tarantella
Spider, Huge Wood
Spider, Planar
Spirit, Druj
Spirit, Odic
Spirit, Revenant
Spitting Cobra, Snake
Sporacle
Spotted Lion
Sprite
Squid, Giant
Sshai (Invisible Stalker)
Stalwart
Steam Weevil
Stirge
Stone Giant
Storm Giant
Strangle Vine
Strangleweed
Sturgeon, Fish, Giant
Sun Brother (Sollux)
Surtaki
Swamp Termite
Sword Beak (Phororhacos)
Tabi
Tarantella Spider, Giant
Termite, Fresh Water
Termite, Salt Water
Termite, Swamp
The Great Dragon
Thou1
Thug (Man)
Thunderhead
Tiger, Normal
Tiger, Sabre-tooth
Tiger Beetle, Giant
Titanothere
Toad, Giant
Toad, Rock/Cave
Topi
Tortle
Trader (Man)
Traldar
Treant
Triceratops
Triton
Troglodyte
Troll .
Troll, Gargantua
Tuatara Lizard, Giant
Tylosaurus
Tyrannosaurus Rex
Ulzaq (Homunculus)
Undead Beholder
Undead Dragon
Undine
Unicorn
Vamora Shark
Vampire
Vampire Bat, Giant
Vampire Rose
Vapour Ghoul
Velya
Vision (Phantom)
War Dog
Water Weird
Weasel, Giant
Weed Eel
Werebat
Werebear
Wereboar
Werefox
Wererat
Wereseal
Wereshark
Weretiger
Werewolf
Whale, Killer
Whale, Narwhal
Whale, Sperm
Whipweed
White Ape
White Dragon
White Fang
White Shark, Great
Wight
Wild Boar
Wildcat
Wildman (Man)
Winged Warrior
Wolf, Normal
Wolf, Dire
Wood Golem
Wood Imp
Wood Juggernaut
Wood Spider, Huge
Woolly Rhinoceros
Wooddrake
Worm, Purple
Worm, Red
Worm, Slime
Wraith
Wychglow
Wyrd, Normal & Giant
Wyvern
Xytar
Yellow Mold
Yowler
Zombie
DMR2 – Creature Catalog
Amber Lotus Flower
Amoeba, Giant
Animal, Prehistoric
Annelid, Great
Aranea
Archer Bush
Ash Crawler
Baklandar
Banshee, Lesser
Bargda
Beetle, Earthquake
Beholder, Aquatic
Bhut
Brain Collector
Brownie
Cat, Great
Cay-Man
Chameleon Man
Chevall
Choker
Coltpixy
Crone of Chaos
Cryion
Dark Wing
Darkhood (Rorphyr)
Death Fiend (Ostego)
Decapus (Land and Marine)
Deep Glaurant
Desert Ghost
Dinosaur
Dog
Dragon, Pocket
Dragon, Sea
Dragon, Undead
Dragonfly
Dragonne
Dusanu
Eagle
Eel
Elf
Faedorne
Feywing
Fish, Giant
Fish, Piranha (Cold-Water)
Flitterling
Frog, Giant Poisonous
Fundamental
Fungoid
Fyrsnaca
Gakarak (Forest Brooder)
Gargoyle, Iron
Garl
Gator Man
Geonid
Ghoul, Elder
Ghostly Horde
Golem
Gray Philosopher
Guardian Warrior & Horse
Gyerian
Haunt, Lesser
Hawk
Hephaeston
Herex
Hivebrood
Homonculus
Hook Beast
Hutaakan
Hypnosnake
Ice Wolf
Jellyfish, Giant
Juggernaut
Kal-Muru (Shipbane)
Kara-Kara
Killer Tree
Kna
Kopru
Kraken
Lamara
Lava Lizard
Leviathan
Living Statue
Lizard, Giant Foot-Pad
Lizard, Rockhome
Lupin
Lycanthrope, Werejaguar
Magen
Magpie
Man, Isolated (Cynidiceans, Quariks, Traldar)
Man, Primitive (Barbarian, Native, Wild Man)
Masher
Mesmer
Nagpa
Nightmare
Octopus, Giant
Owl, Giant
Oyster, Diant
Pachydemion
Pegataur
Phanaton
Phantom, Lesser
Piranha Bird
Polymar
Porcupine, Giant
Rakasta
Randara
Raven & Crow
Red Worm
Rhinoceros
Rock Man
Roper
Saberclaw
Scamille
Scorpion, Normal
Sea Horse
Sea Serpent
Serpentweed, Giant
Shargugh
Shark, Vamora
Shark-Kin
Silver Warrior
Sirenflower
Sis’thik (Desert Scourge)
Skunk
Slime Worm
Snake, Rock Rattler
Snapper
Sollux (Sun Brother)
Soul Eater
Spider, Giant
Steam Weevil
Strangle Vine
Strangleweed
Surtaki
Tabi
Thunderhead
Topi
Tortle
Triton
Vampire, Nosferatu
Vampire Rose
Velya
Water Weird
Whipweed
White-Fang
Winged Warrior
Wood Imp
Wychglow
Wychlamp
Wyrd
Xytar
Yowler
Other OD&D Sources
Aketheti
Archer Bush
Auratus
Beetle, Spitting
Chameleon Man
Chevall
Crone of Chaos
Cynideiceans
Decapus
Dusker
Eater-Of-Magic
Faedorne
Fey, Wailing
Flitterlings
Galumph
Garl
Giant Swamp Eel
Giant Freshwater Slug
Giant Swamp Snapping Turtle
Golem, Armor
Golem, Bamboo Warrior
Golem, Ice
Guardian Hand
Haunt, Minor
Hephaeston
Hook Horrow
Ice Wolf
Kartoeba
Living Statue, Jade
Living Statue, Rock/Ooze
Living Statue, Steel
Lizard, Giant Footpad
Lizard, Lava
Lycanthrope, Werefox
Night Spider (Arachne Prime)
Oard
Phase Stinger
Piranha
Piranha Bird
Polymar
Prying Eyes
Rakasta, Ninja
Rakasta, Warrior
Ratling
Raven, Large
Red Worm
Shargugh
Silver Warrior
Sirenflower
Skullwraith
Snake, Rock Rattler
Spider, Giant Hunting
Spider, Giant Shroud
Spider, White Widow
Steam Weevil
Swamp Velya
Tiger, Ebon
Vampire Roses
Water Weird
Wyrd
And, although not OD&D, the following are Mystara monsters updated to 2E:
MC Mystara Appendix
Actaeon
Agarat
Ash Crawler
Baldandar
Bargda
Bhut --> Fiend Folio, although seems different
Bird, Magpie
Bird, Giant Magpie
Bird, Piranhabird (lesser & greater)
Bird, Sprackle (lesser & greater)
Blackball --> Epic Level Handbook
Brain Collector --> Epic Level Handbook
Chevall
Choker --> Monster Manual
Coltpixy
Crone of Chaos
Darkhood
Darkwing
Decapus --> Tome of Horrors
Deep Glaurant
Diabolus
Dragon, Crystalline
Dragon, Jade
Dragon, Onyx
Dragon, Ruby
Dragonfly (White, Black, Green, Blue, Red)
Drake, Mystaran (Mandrake, Wooddrake, Colddrake, Elemental Drake)
Dusanu -->
Ebon Tiger
Elementals of Chaos (Air, Earth, Fire, Water)
Elementals of Law (Air, Earth, Fire, Water)
Familiars (Aryth, Bogan, Fylgar, Gretch, Ulzaq)
Frost Salamander --> Monster Manual 2
Fundamental (Air, Earth, Fire, Water)
Gargantua (carrion crawler, troll <-- kaiju template ?)
Geonid
Ghostly Horde
Giant, Athach --> Monster Manual (ironically, no more a giant)
Giant, Hephaeston
Golem, Amber
Golem, Drolem --> Monster Manual 2
Golem, Iron Gargoyle
Golem, Mud
Golem, Rock
Golem, Silver
Golem, Skeletal
Gray Philosopher
Guardian Horse
Guardian Warrior
Gyerian
Herex (Larva, Adult)
Hivebrood (Broodling, Soldier, Lieutenant, Mother, Controller)
Horde
Hsiao
Huptzeen
Hutakaan
Imp (Wood, Bog, Garden)
Jellyfish, Giant (Marauder, Death's hand, Galley)
Kna
Kopru --> Monster Manual 2
Living Statue (Crystal, Iron, Jade, Rock, Ooze, Silver, Steel)
Lizards (Draco, Giant Footpad, Giant Gecko, Giant Tuatara, Horned Chameleon, Lava, Rockhome, Xytar)
Lizard-kin (Cayman, Chameleon Man, Gator Man, Sis'thik)
Lupin
Lycanthrope, Werejaguar
Lycanthrope, Wereswine
Magen (Demos, Caldron, Galvan, Hypnos) --> See there!
Manikin
Mek
Mujina
Nagpa
Nightshades (Nightcrawler, Nightwalker, Nightwing) --> Monster Manual
Nuckalavee
Pegataur -->
Phanaton
Plant, Amber Lotus
Plant, Archer Bush --> Tome of Horrors
Plant, Grab Grass
Plant, Vampire Rose --> Tome of Horrors
Plasm (Normal, Giant)
Rakasta
Rock Man
Saberclaw
Sacrol
Scamille
Shapeshifter, Adaptor
Shapeshifter, Metamorph
Shapeshifter, Polymar -->
Shapeshifter, Randara
Shargugh
Shark-kin
Sollux
Spectral Death
Spectral Hound
Spider-kin, Aranea --> Monster Manual
Spider-kin, Planar Spider
Spider-kin, Ploppéd
Spider-kin, Rhagodessa
Spirit, Druj
Spirit, Odic
Surtaki
Tabi
Thoul -->
Thunderhead
Topi
Tortle
Vampire, Velya
White Fang
Worm (Great Annelid, Caecillia, Desert Leviathan, Fyrsnaca, Marine Leviathan, Red Worm, Slime Worm)
Wyrd (Lesser, Greater)
Yowler
Zombie, Lightning (Lesser, Greater)
MC Savage Coast Appendix
Aranea
Arashaeem
Batracine
Caniquine
Cat, Marine
Cinnavixen
Critter, Temple
Cursed One
Deathmare
Dragon, Introduction
Dragon, Crimson
Dragon, Red Hawk
Echyan
Ee'aar
Enduk
Fachan
Feliquine
Fiend, Narvaezan
Frelôn
Ghriest
Glutton, Sea
Goatman
Golem, Aeldar
Golem, Glassine Horror
Golem, Red
Golem, Juggernaut, Hulean
Grudgling
Heraldic Servant, General
Heraldic Servant, Aurochs
Heraldic Servant, Bear
Heraldic Servant, Bee
Heraldic Servant, Dolphin
Heraldic Servant, Dragon
Heraldic Servant, Eagle
Heraldic Servant, Griffin
Heraldic Servant, Horse
Heraldic Servant, Lion
Heraldic Servant, Phoenix
Heraldic Servant, Ram
Heraldic Servant, Rooster
Heraldic Servant, Sea Horse
Heraldic Servant, Sea Lion
Heraldic Servant, Stag
Heraldic Servant, Swan (black)
Heraldic Servant, Talbot
Heraldic Servant, Tyger
Heraldic Servant, Unicorn
Heraldic Servant, Wyvern
Hermit, Sea
Jorri
Juhrion
Kla'a-Tah
Leech, Legacy
Lich, Inheritor
Lizard Kin
Lupasus
Lupin
Lyra Bird, Saragón
Malfera
Manscorpion, Nimmurian
Mythuínn Folk
Naâruk
Neshezu
Nikt'll
Nosferatu
Omm-wa
Omshirim
Parasite, Lice, Inheritor
Parasite, Moth, Powder
Parasite, Pest, Jibarú
Parasite, Plague, Lupin
Parasite, Tick, Cardinal
Parasite, Vermilia
Phanaton, Jibarú
Plant, Amber Lotus
Plant, Eyeweed
Plant, Fungus, Vermeil
Plant, Pimpernel, Scarlet
Plant, Rosebush, Gargoñan
Pudding, Vermilion
Rakasta
Ray, Forest
Shedu, Greater
Shimmerfish
Skinwing
Spawn of Nimmur
Spider-spy
Spirit, Heroic
Spirit, Wallaran
Succulus
Swampmare
Swordsman, Clockwork
Symbiont Shadow
Tortle
Troll, Legacy
Trosip
Tyminid
Utukku
Voat
Voat, Herathian
Vulturehound
Wallara
Wurmling
Wynzet
Yeshom
Zombie, Red
I gathered this information from various web sources, so I'm bound to be missing a few critters here and there. Also, I believe these are from the latest releases of OD&D, so there may be a few earlier critters missing as well.
OD&D Basic Set
Ant, Giant
Ape, White
Baboon, Rock
Bandit
Bat, Giant
Bat, Normal
Bear, Black
Bear, Grizzly
Bear, Polar
Bear, Cave
Bee, Giant
Beetle, Giant, Fire
Beetle, Giant, Tiger
Beetle, Giant, Oil
Berserker
Boar
Bugbear
Carrion Crawler
Cat, Great, Mountain Lion
Cat, Great, Panther
Cat, Great, Lion
Cat, Great, Tiger
Cat, Great, Sabre-Tooth Tiger
Centipede, Giant
Doppelganger
Dragon (various)
Elf
Ferret, Giant
Gargoyle
Gelatinous Cube
Ghoul
Gnoll
Gnome
Goblin
Gray Ooze
Green Slime
Halfling
Harpy
Hobgoblin
Human
Kobold
Living Statue, Crystal
Living Statue, Iron
Living Statue, Rock
Lizard, Giant, Gecko
Lizard, Giant, Draco
Lizard, Giant, Horned
Lizard, Giant, Tuatara
Lizard Men
Lycanthrope (various)
Medusa
Minotaur
Mule
Neaderthal
Normal Human
NPC Party
Ochre Jelly
Ogre
Orc
Owlbear
Pixie
Rat, Normal
Rat, Giant
Robber Fly
Rust Monster
Shadow
Shrew, Giant
Shrieker
Skeleton
Snake, Spitting Cobra
Snake, Giant Racer
Snake, Pit Viper
Snake, Sea Snake
Snake, Giant Rattler
Snake, Rock Python
Spider, Giant, Crab Spider
Spider, Giant, Black Widow
Spider, Giant, Tarantella
Sprite
Stirge
Thoul
Troglodyte
Wight
Yellow Mold
Wolf, Normal
Wolf, Dire
Zombie
OD&D Expert Set
Animal Herd (various)
Basilisk
Black Pudding
Blink Dog
Caecilia
Camel
Centaur
Chimera
Cockatrice
Crab, Giant
Crocodile, Normal
Crocodile, Large
Crocodile, Giant
Cyclops
Devil Swine
Displacer Beast
Djinni (Lesser)
Dryad
Efreeti (Lesser)
Elemental (various)
Elephant, Normal
Elephant, Prehistoric (Mammoth or Mastodon)
Fish, Giant Bass
Fish, Giant Rockfish
Fish, Giant Sturgeon
Giant, Hill
Giant, Stone
Giant, Frost
Giant, Fire
Giant, Cloud
Giant, Storm
Golem (various)
Golem, Wood
Golem, Bone
Golem, Amber
Golem, Bronze
Gorgon
Griffon
Hellhound
Hippogriff
Horse, Riding
Horse, War
Horse, Draft
Hydra
Insect Swarm
Invisible Stalker
Leech, Giant
Manticore
Men
Merman
Mummy
Nixie
Pegasus
Pterodactyl
Pteranodon
Purple Worm
Rhagodessa
Roc
Salamander, Flame
Salamander, Frost
Scorpion, Giant
Spectre
Termite, Water
Toad, Giant
Treant
Triceratops
Troll
Tyrannosaurus Rex
Unicorn
Vampire
Wraith
Wyvern
OD&D Companion Set
Aerial Servant
Beholder
Blast Spore
Djinni, Greater
Dolphin
Dragon (various)
Dragon Turtle
Efreeti, Greater
Gargantua
Golem, Drolem
Golem, Mud
Golem, Obsidian
Gremlin
Haunt, Banshee
Haunt, Ghost
Haunt, Poltergeist
Helion
Horde
Hydrax
Grab Grass
Kryst
Malfera
Manscorpion
Manta Ray
Manta Ray, Giant
Mujina
Phantom, Apparition
Phantom, Shade
Phantom, Vision
Plasm
Rock (Cave) Toad
Shark, Bull
Shark, Mako
Shark, Great White
Snow Ape
Spectral Hound
Spirit, Druj
Spirit, Odic
Spirit, Revenant
Undine
Weasel, Giant
Whales, Killer
Whales, Narwhal
Whales, Sperm
OD&D Master Set
Acateon
Adaptor
Archon
Athach
Beholder, Undead
Blackball
Devilfish
Dinosaur
Dragons, Gem, Crystal
Dragons, Gem, Onyx
Dragons, Gem, Jade
Dragons, Gem, Sapphire
Dragons, Gem, Ruby
Dragons, Gem, Tiger's Eye (Brown)
Dragon Ruler
Drake
Elemental Ruler
Faerie
Giant, Mountain
Giant, Sea
Hag, Black
Had, Sea
Hsiao
Headsman/thug
Mystic
Lich
Lycanthrope, Werebat
Lycanthrope, Werefox
Lycanthrope, Wereseal
Mek
Metamorph
Nekrezon
Nightshade
Nucklavee
Ooze, Lava
Phoenix
Revener
Sasquatch
Slug, Giant
Sphinx
Spider, Planar
Sporacle
OD&D Immortals Set
Baaka
Demon, Entropy - Croaking (Swamp Demon, Gobbler)
Demon, Entropy - Groaning (Forest Demon, Biter)
Demon, Entropy - Hissing (Water Demon, Destroyer)
Demon, Entropy - Howling (Fire Demon, Four-Armed Horror)
Demon, Entropy - Roaring (Mountain Demon, Manslayer)
Demon, Entropy - Screaming (Air Demon, Winged Fury)
Demon, Entropy - Whispering (Charmer, Grey Deceiver)
Diabolus
Draeden
Dragon, Dragon Ruler
Elemaster
Flicker
Immortals
Jumper
Megalith
Nightmare Creatures
Nipper
Notion
Phoenix, Greater
Phoenix, Lesser
Protean, Astral
Protean, Local (Giant)
Repeater (Ditto)
Soo
Titan
Tonal, Breve
Tonal, Crotchet
Tonal, Minim
Tonal, Quaver
Tonal, Semibreve
Tonal, Semiquaver
Vortex Creatures
B3 – Palace of the Silver Princess
Archer Bushes
Baric
Bubbles
Decapus
Diger
Ghost
Giant Marble Snake
Jupiter Blood Sucker
Monkey, Giant Marmoset
Poltergeist
Protectors
Purple Moss
Ubue
B4 – The Lost City
Banshee
Cynidiceans
Lycanthrope, Werefox
Polymar
B6 – The Veiled Society
Sirenflower
Champions of Mystara Boxed Set
Sky Wyrm (lesser & greater)
Night Dragon (lesser & greater)
Rakasta
Cestian Gobbler
Aranea
Karwana Mulunba
Mugumba
CM3 – Sabre River
Sabreclaw
CM6 – Where Chaos Reigns
Oard
Garl (Caveman)
Hephaeston
DA3 – City of the Gods (Blackmoor)
Camarilla
Cyborg
Gakarak
Garl
Geonid
Grazer
Herex
Hide Hunter (Human)
Hook Beast (Hook Horror, Hulker)
Robots (Dbot, Sbot, Ebot, Ubot)
Quarg
Roper
Sand Folk
DA4 – The Duchy of Ten (Blackmoor)
Brother of the Greenwood (Human)
Dolphin
Dragon Turtle
Gakarak
Gator Man
Grazer
Handmaiden of Death (Human)
Hide Hunter (Human)
Lava Lizard
Roper
Sister of Fire (Human)
Skandaharian Raider (Human)
Sollux (Sun Brother)
Soul Eater
GAZ3 - The Principalities of Glantri
Imp, Red Imp
Imp, Blue Imp
Manikin (in the CC as Mandragora)
Nosferatu (reprinted from Gaz1)
Vampire Rose (reprinted from B3)
GAZ8 - The Five Shires
Deep Glaurant
Feywing
Nightgleet
Rockfang
Seergar
Wychlamp
GAZ12 - Ethengar Khanates
Lesser Animal Spirit
Greater Animal Spirit
Spirit Lord
Evil Spirit
Nature Spirit
Spirit Skeleton
Cat, Wild
Chameleon Lizard
Dog
Eagle
Falcon
Giant Boar
Gerbil
Goat, Wild
Hawk
Horse, Nag
Horse, Poor Light War
Horse, Normal Light War
Horse, Superior Light War
Monkey
Owl
Sheep
Swan
Yak
GAZ13 - Shadowelves
Skinwing
Boneless
Darksnap
Hollow World Boxed Set
Allosaurus
Ankylosaurus
Apatosaurus (Brontosaurus)
Archaeopteryx
Aurochs
Automatons of the Blacklore Valley
Cave Bear
Bison, Giant
Giant Eagle (Hiak)
Flapsail
Ichthyosaurus
Foot-pad Lizard
Lizard, Thumper
Mammoth, Wooly
Pachycephalosaurus
Phobosuchus
Pisanosaurus
Plesiosaurus
Pteranodon, Giant
Ponies, Krugel
Pterosaur, Small, Medium & Large
Reindeer, Giant
Small Riding Animals
Somnastis Plant
Stegosaurus
Triceratops
Tyrannosaurus Rex
Viper, Flying
Wolves, Artic
Sun-Wight
Were-Sabretooth
Frost-Zombie
Bounder
HWA1 - Nightwail
Discorporate
Giant Annelid
Gridbug
HWA3 - Nightstorm
Ganetra Golem
HWR1 - Sons of Azca
Archelon
Baluchitherium
Gruquotec
Feathered Serpent
Hyenodon
Lycanthrope, Werejaguar
Moan Bird
Nothosaurus
Tanystropheus
Tepictoton
Tzitzimitl
HWR3 - The Milenian Empire
Agrisian Jellyfish
Amorian Hound
Shaggy Auroch
Zargosian Bat
Zargosian Changeling
Kingdom of Nithia
Chimer
Refractor
Sand Star
Dream-hunter
M2 – Vengeance of Alphaks
Beetle, Earthquake
Pegataur
Milenian Sceptre
Karakos the Zargostan Hydra
Lyadrachnus
PC1 - Tall Tales of the Wee Folk
Brownie
Redcap
Centaur
Dryad
Faun
Hsiao
Leprechaun
Pixie
Pooka
Sidhe
Sprite
Treant
Wood Imp
Wood Drake
PC2 – Top Ballista (accessory; not a module)
Faenare
Gnomes
Gremlins
Harpies
Nagpa
Pegataurs
Pig-headed Hydra
Sphinxes
Tabi
2-Headed Crocotroll
Undead Mass
Undead Sphimera
Undead Pegataur
PC3 - Sea People
Nixie
Merrow
Aquatic Elf
Shark-kin
Triton
Kna
Kopru
Sea Giant
Devil Fish
X1 – Isle of Dread
Allosaurus
Ankylosaurus
Aranea
Brontosaurus
Dimetrodon
Elk (Giant)
Grangeri
Kopru
Megatherium
Native (humans)
Phanaton
Phororhacos (“Sword Beak”)
Plesiosaurus
Rakasta
Trachodon
X2 – Castle Amber
Amber Lotus Flowers
Amoeba, Giant
Aranea
Brain Collector
Death Demon
Golem, Mud
Grab Grass
Gremlin
Killer Trees
Lupin
Magen (Hypnos, Demos, Caldron, Galvan)
Pagan
Phantoms
Rakasta
Slime Worm
Sun Brother
Vampire Roses
X4 – Master of the Desert Nomads
Bhut
Juggernaut
Nagpa
Soul Eater
Tabi
X5 – Temple of Death
Dusanu
Geonid
Malfera
Mujina
Spectral Hound
X6 – Quagmire!
Fish, Giant (Giant Piranha, Giant Catfish)
Grab Grass
Killer Trees
Piranha Bird
Pocket Dragon
Spider, Giant Hunting
X7 – War Rafts of Kron
Dolphin
Dragon Turtle
Eel (Electric, Giant)
Gargantua
Sea Horse
Giant Jellyfish (Marauder, Man-0- War)
Manta Ray (Normal, Giant)
Giant Octopus
Sea Serpent (Lesser, Greater)
Shark (Bull, Mako, Great White)
Squid Giant
Triton
Velya
Whales (Killer, Narwhal, Sperm)
AC9 – Creature Catalouge
Actaeon
Adaptor
Aerial Servant (Haoou)
Agarat
Allosaurus
Amber Golem
Amber Lotus Flower
Amir (Greater Efreeti)
Amoeba, Giant
Animal Herd
Ankylosaurus
Ant, Giant
Ape, Snow
Ape, White
Apparition (Phantom)
Aquatic Beholder
Aquatic Elf
Aranea
Archer Bush
Archon
Ash Crawler
Athach
Baboon, Rock
Baldandar
Bandit (Man)
Banshee (Haunt)
Banshee, Lesser
Barbarian (Man)
Bargda
Basilisk
Bass, Giant (Fish)
Bat, Normal
Bat, Giant
Bat, Giant Vampire
Bear, Black
Bear, Cave
Bear, Grizzly
Bear, Polar
Bee, Giant
Beetle, Earthquake
Beetle, Giant Fire
Beetle, Giant Oil
Beetle, Giant Tiger
Beholder
Beholder, Aquatic
Beholder, Undead
Bekkah
Berserker (Man)
Bhut
Black Bear
Black Dragon
Black Hag
Black Pudding
Black Widow Spider, Gt.
Blackball
Blast Spore
Blink Dog
Blue Dragon
Boar, Wild
Bodendruker (Leveller)
Bone Golem
Brain Collector
Brigand (Man)
Brontosaurus
Bronze Golem
Brown Dragon
Buccaneer (Man)
Bugbear
Bull Shark
Caecilia
Caldron (Magen)
Camel
Carp, Gargantuan
Carrion Crawler
- Gargantua
Cat, Great
Catfish, Giant
Cave Bear
Cave Toad
Cay-man
Centaur
Centipede, Giant
Chameleon Man
Chameleon Lizard, Giant
Cheetah
Chevall
Chimera
Cloud Giant
Cobra, Spitting, Snake
Cockatrice
Cockrobin (Gyerian)
Colddrake
Crab, Giant
Crab Spider, Giant
Crocodile, Normal
Crocodile, Giant & Large
Crone of Chaos
Crow, Normal & Large
Cryion
Crystal Dragon
Crystal Living Statue
Cyclops
Cynidicean
Dark-Hood (Rorphyr)
Dark Wing
Deadly Sphere (Blackball)
Death Demon
Death Leech
Decapus (Land & Marine)
Demos (Magen)
Dervish (Man)
Desert Ghost
Desert Leviathan
Devil Swine
Devilfish
Diamond Dragon
Dinosaur
- Allosaurus
- Ankylosaurus
- Brontosaurus
- Titanothere
- Tylosaurusus
Dinosaur, Aquatic
Dinosaur, Flying
Dinosaur, Carnivore
Dinosaur, Herbivore
Dire Wolf
Displacer Beast
Djinni, Greater (Pasha)
Djinni, Lesser
Dog, Normal & War
Dolphin
Doppleganger
Draco Lizard, Giant
Dragon, Black
Dragon, Blue
Dragon, Brown
Dragon, Crystal
Dragon, Diamond
Dragon, Gold
Dragon, Green
Dragon, Jade
Dragon, Onyx
Dragon, Opal
Dragon, Pearl
Dragon, Pocket
Dragon, Red
Dragon, Ruby
Dragon, Sapphire
Dragon, Sea
Dragon, The Great
Dragon, Undead
Dragon, White
Dragon, Ruler
Dragon, Turtle
Dragonfly, Black
Dragonfly, Blue
Dragonfly, Green
Dragonfly, Red
Dragonfly, White
Dragonne
Drake, Colddrake
Drake, Elemental
Drake, Mandrake
Drake, Woodrake
Drolem
Druj (Spirit)
Dryad
Dusanu
Dwarf
Eagle, Normal & Great
Earthquake Beetle
Eel, Electric
Eel, Giant Electric
Eel, Weed
Efreeti, Greater (Amir)
Efreeti, Lesser
Elder Ghoul
Electric Eel
Electric Eel, Giant
Elemental Drake
Elemental Ruler
Elemental, Air
Elemental, Earth
Elemental, Fire
Elemental, Water
Elephant
Elephant, Prehistoric
Elf
Elf, Aquatic
Elk, Giant
Faedorne
Faerie
Ferret, Giant
Fire Beetle, Giant
Fire Giant
Fish, Gargantua Carp
Fish, Giant Bass
Fish, Giant Catfish
Fish, Giant Piranha
Fish, Giant Rockfish
Fish, Giant Sturgeon
Fish, Piranha (Cold Water)
Flame Salamander
Flitterling
Fly, Robber
Flying Hydra
Footpad Lizard, Giant
Fresh Water Termite
Frog, Giant Poisonous
Frost Giant
Frost Salamander
Fundamental, Air
Fundamental, Earth
Fundamental, Fire
Fundamental, Water
Fungoid
Fylgar (Homunculus)
Fyrsnaca
Gakarak
Gargantua Carp
Gargantua
- Carrion Crawler
- Gargoyle
- Troll
Gargoyle
Gargoyle, Gargantua
Gargoyle, Iron
Garl
Gator Man
Galvan (Magen)
Gelatinous Cube
Geonid
Gecko Lizard, Giant
Ghost (Haunt)
Ghostly Horde
Ghoul
Ghoul, Elder
Ghoul, Vapour
Giant, Cloud
Giant, Fire
Giant, Frost
Giant, Hill
Giant, Mountain
Giant, Sea
Giant, Stone
Giant, Storm
Gnoll
Gnome
Goblin
Gold Dragon
Golem, Amber
Golem, Bone
Golem, Bronze
Golem, Mud
Golem, Obsidian
Golem, Rock
Golem, Silver
Golem, Wood
Gorgon
Grab Grass
Grangeri
Gray Ooze
Great Dragon, The
Great Eagle
Great White Shark
Green Dragon
Green Slime
Gremlin
Gretch (Homunculus)
Grev Philosopher
Griffon
Grizzly Bear
Guardian Warrior/Horse
Gyerian
Haoou (Aerial Servant)
Hag, Black
Hag, Sea
Halfling
Harpy
Haunt, Banshee
Haunt, Ghost
Haunt, Lesser
Haunt, Poltergeist
Hawk, Normal & Giant
Headsman (Man)
Helion
Hellhound
Herd Animal
Hephaeston
Herex
Hill Giant
Hippogriff
Hivebrood
Hobgoblin
Homonculus, Fylgar
Homonculus, Gretch
Homonculus, Ulzaq
Hook Beast, Hook Horror
Hook Beast, Hulker
Horde
Horse, Draft
Horse. Riding
Horse, War
Horse, Wild
Hound, Spectral
Hsiao
Hulker
Human
Hunting Spider, Giant
Huptzeen
Hutaakan
Hydra
Hydra, Flying
Hydra, Sea
Hydrax
Hypnos (Magen)
Hypnosnake
Ice Wolf
Imp, Wood
Insect Swarm
Invisible Stalker
Invisible Stalker (Sshai)
Iron Gargoyle
Iron Living Statue
Jade Dragon
Jade Living Statue
Jaguar
Jelly, Ochre
Jellyfish
Juggernaut, Stone
Juggernaut, Wood
Kal-Muru
Kara-kara
Killer Tree
Killer Whale
Kobold
Kna
Kopru
Kraken
Kryst
Lamara
Land Decapus
Lava Lizard
Lava Ooze
Leech, Giant
Lesser Banshee
Lesser Haunt
Leveller (Bodendruker)
Leviathan, Desert
Leviathan, Marine
Lich
Lion, Normal
Lion, Mountain
Lion, Spotted
Living Statue, Crystal
Living Statue, Iron
Living Statue, Jade
Living Statue, Rock
Living Statue, Rock/Ooze
Living Statue, Silver
Living Statue, Steel
Lizard Man
Lizard, Giant Chameleon
Lizard, Giant Draco
Lizard, Giant Footpad
Lizard, Giant Gecko
Lizard, Giant Tuatara
Locust, Giant
Lupin
Lotus Flower, Amber
Lycanthrope
- Werebat
- Werebear
- Wereboar
- Werefox
- Wererat
- Wereseal
- Wereshark
- Weretiger
- Werewolf
Lynx
Magen, Caldron
Magen, Demos
Magen, Galvan
Magen, Hypnos
Magpie, Normal
Magpie, Large
Malfera
Mako Shark
Malice
Man, Bandit
Man, Barbarian
Man, Berserker
Man, Brigand
Man, Buccaneer
Man, Dervish
Man, Headsman or Thug
Man, Isolated
Man, Mystic
Man, Native
Man, Noble
Man, Nomad
Man, Normal Human
Man, NPC Party
Man, Pagan
Man, Pirate
Man, Primitive
Man, Trader
Man, Wild
Man-O-War Jellyfish, Gt.
Mandrake
Manscorpion
Manta Ray, Normal
Manta Ray, Giant
Manticore
Marauder Jellyfish, Giant
Marine Decapus
Marine Leviathan
Masher
Mastodon
Medusa
Megatherium
Mek
Merman
Mesmer
Metamorph
Minotaur
Mold, Yellow
Mountain Giant
Mountain Lion
Mud Golem
Mujina
Mule
Mummy
Mystic (Man)
Nagpa
Narwha1
Native (Man)
Neanderthal
Nekrozon
Nightcrawler
Nightmare
Nightshade
Nightwalker
Nightwing
Nixie
Noble (Man)
Nomad (Man)
Normal Human
NPC Party
Nuckalavee
Oard
Obsidian Golem
Ochre Jelly
Octopus, Giant
Odic (Spirir)
Ogre
Oil Beetle. Giant
Onyx Dragon
Ooze, Gray
Ooze, Lava
Opal Dragon
Orc
Owl, Giant
Owl Bear
Oyster, Giant
Pachydermion
Pagan (Man)
Pasha (Grearer Djinni)
Panther
Pearl Dragon
Pegasus
Pegataur
Phanaton
Phantom, Apparition
Phantom, Lesser
Phantom, Shade
Phantom, Vision
Philosopher, Grey
Phoenix, Gtr. & Lsr.
Phororhacos (Sword Beak)
Phygorax
Piranha (Cold-Water)
Piranha, Giant
Piranha Bird, Greater
Piranha Bird, Lesser
Pirate (Man)
Pit Viper. Snake
Pixie
Planar Spider
Plasm, Normal & Giant
Poisonous Frog, Giant
Polar Bear
Pocket Dragon
Poltergeist (Haunt)
Polymar
Porcupine, Giant
Possession
Primitive Man
Pteranadon
Pterodactyl
Purple Worm
Python, Rock
Qaurik
Racer Snake, Giant
Raudara
Rakasta
Rat, Normal & Giant
Rattler Snake, Giant
Raven, Normal & Large
Red Dragon
Red Worm
Reflecter
Revenant (Spirit)
Revener
Rhagodessa
Rattler Snake, Rock
Rhinoceros, Normal
Rhinoceros, Woolly
Robber Fly
Roc, Giant, Large & Small
Rock/Ooze Living Statue
Rock Baboon
Rock Golem
Rock Man
Rock Python, Snake
Rock Rattler, Snake, Gt.
Rock Toad
Rockfish, Giant
Rooster (Gyerian)
Roper
Rorphyr (Dark-hood)
Ruby Dragon
Rust Monster
Sabreclaw
Sabre-Tooth Tiger
Sacrol
Salamander, Flame
Salamander, Frost
Salt Water Termite
Sand Spider, Giant
Sapphire Dragon
Sasquatch
Scamille
Scorpion, Normal
Scorpion, Giant
Scorpion, Manscorpion
Sea Dragon
Sea Giant
Sea Hag
Sea Horse
Sea Hydra
Sea Serpent, Greater
Sea Serpent, Lesser
Sea Snake
Serpentweed, Giant
Shade (Phantom)
Shadow
Shargugh
Shark-Kin
Shark, Bull
Shark, Great White
Shark, Mako
Shark, Vamora
Shrew, Giant
Shrieker
Shroud Spider, Giant
Silver Golem
Silver Living Statue
Silver Warrior
Sirenflower
Sis'thik
Skeleton
Skunk, Normal & Giant
Slime, Green
Slime Worm
Slug, Giant
Snake, Giant Racer
Snake, Giant Rattler
Snake, Pit Viper
Snake, Rock Python
Snake, Rock Rattler
Snake, Rock Rattler, Gt.
Snake, Sea
Snake, Spitting Cobra
Snapper
Snow Ape
Sollux (Sun Brother)
Soul Eater
Steel Living Statue
Stone Juggernaut
Spectral Hound
Spectre
Sperm Whale
Sphinx
Spider, Gt. Black Widow
Spider, Giant Crab
Spider, Giant Hunting
Spider, Giant Sand
Spider, Giant Shroud
Spider, Giant Tarantella
Spider, Huge Wood
Spider, Planar
Spirit, Druj
Spirit, Odic
Spirit, Revenant
Spitting Cobra, Snake
Sporacle
Spotted Lion
Sprite
Squid, Giant
Sshai (Invisible Stalker)
Stalwart
Steam Weevil
Stirge
Stone Giant
Storm Giant
Strangle Vine
Strangleweed
Sturgeon, Fish, Giant
Sun Brother (Sollux)
Surtaki
Swamp Termite
Sword Beak (Phororhacos)
Tabi
Tarantella Spider, Giant
Termite, Fresh Water
Termite, Salt Water
Termite, Swamp
The Great Dragon
Thou1
Thug (Man)
Thunderhead
Tiger, Normal
Tiger, Sabre-tooth
Tiger Beetle, Giant
Titanothere
Toad, Giant
Toad, Rock/Cave
Topi
Tortle
Trader (Man)
Traldar
Treant
Triceratops
Triton
Troglodyte
Troll .
Troll, Gargantua
Tuatara Lizard, Giant
Tylosaurus
Tyrannosaurus Rex
Ulzaq (Homunculus)
Undead Beholder
Undead Dragon
Undine
Unicorn
Vamora Shark
Vampire
Vampire Bat, Giant
Vampire Rose
Vapour Ghoul
Velya
Vision (Phantom)
War Dog
Water Weird
Weasel, Giant
Weed Eel
Werebat
Werebear
Wereboar
Werefox
Wererat
Wereseal
Wereshark
Weretiger
Werewolf
Whale, Killer
Whale, Narwhal
Whale, Sperm
Whipweed
White Ape
White Dragon
White Fang
White Shark, Great
Wight
Wild Boar
Wildcat
Wildman (Man)
Winged Warrior
Wolf, Normal
Wolf, Dire
Wood Golem
Wood Imp
Wood Juggernaut
Wood Spider, Huge
Woolly Rhinoceros
Wooddrake
Worm, Purple
Worm, Red
Worm, Slime
Wraith
Wychglow
Wyrd, Normal & Giant
Wyvern
Xytar
Yellow Mold
Yowler
Zombie
DMR2 – Creature Catalog
Amber Lotus Flower
Amoeba, Giant
Animal, Prehistoric
Annelid, Great
Aranea
Archer Bush
Ash Crawler
Baklandar
Banshee, Lesser
Bargda
Beetle, Earthquake
Beholder, Aquatic
Bhut
Brain Collector
Brownie
Cat, Great
Cay-Man
Chameleon Man
Chevall
Choker
Coltpixy
Crone of Chaos
Cryion
Dark Wing
Darkhood (Rorphyr)
Death Fiend (Ostego)
Decapus (Land and Marine)
Deep Glaurant
Desert Ghost
Dinosaur
Dog
Dragon, Pocket
Dragon, Sea
Dragon, Undead
Dragonfly
Dragonne
Dusanu
Eagle
Eel
Elf
Faedorne
Feywing
Fish, Giant
Fish, Piranha (Cold-Water)
Flitterling
Frog, Giant Poisonous
Fundamental
Fungoid
Fyrsnaca
Gakarak (Forest Brooder)
Gargoyle, Iron
Garl
Gator Man
Geonid
Ghoul, Elder
Ghostly Horde
Golem
Gray Philosopher
Guardian Warrior & Horse
Gyerian
Haunt, Lesser
Hawk
Hephaeston
Herex
Hivebrood
Homonculus
Hook Beast
Hutaakan
Hypnosnake
Ice Wolf
Jellyfish, Giant
Juggernaut
Kal-Muru (Shipbane)
Kara-Kara
Killer Tree
Kna
Kopru
Kraken
Lamara
Lava Lizard
Leviathan
Living Statue
Lizard, Giant Foot-Pad
Lizard, Rockhome
Lupin
Lycanthrope, Werejaguar
Magen
Magpie
Man, Isolated (Cynidiceans, Quariks, Traldar)
Man, Primitive (Barbarian, Native, Wild Man)
Masher
Mesmer
Nagpa
Nightmare
Octopus, Giant
Owl, Giant
Oyster, Diant
Pachydemion
Pegataur
Phanaton
Phantom, Lesser
Piranha Bird
Polymar
Porcupine, Giant
Rakasta
Randara
Raven & Crow
Red Worm
Rhinoceros
Rock Man
Roper
Saberclaw
Scamille
Scorpion, Normal
Sea Horse
Sea Serpent
Serpentweed, Giant
Shargugh
Shark, Vamora
Shark-Kin
Silver Warrior
Sirenflower
Sis’thik (Desert Scourge)
Skunk
Slime Worm
Snake, Rock Rattler
Snapper
Sollux (Sun Brother)
Soul Eater
Spider, Giant
Steam Weevil
Strangle Vine
Strangleweed
Surtaki
Tabi
Thunderhead
Topi
Tortle
Triton
Vampire, Nosferatu
Vampire Rose
Velya
Water Weird
Whipweed
White-Fang
Winged Warrior
Wood Imp
Wychglow
Wychlamp
Wyrd
Xytar
Yowler
Other OD&D Sources
Aketheti
Archer Bush
Auratus
Beetle, Spitting
Chameleon Man
Chevall
Crone of Chaos
Cynideiceans
Decapus
Dusker
Eater-Of-Magic
Faedorne
Fey, Wailing
Flitterlings
Galumph
Garl
Giant Swamp Eel
Giant Freshwater Slug
Giant Swamp Snapping Turtle
Golem, Armor
Golem, Bamboo Warrior
Golem, Ice
Guardian Hand
Haunt, Minor
Hephaeston
Hook Horrow
Ice Wolf
Kartoeba
Living Statue, Jade
Living Statue, Rock/Ooze
Living Statue, Steel
Lizard, Giant Footpad
Lizard, Lava
Lycanthrope, Werefox
Night Spider (Arachne Prime)
Oard
Phase Stinger
Piranha
Piranha Bird
Polymar
Prying Eyes
Rakasta, Ninja
Rakasta, Warrior
Ratling
Raven, Large
Red Worm
Shargugh
Silver Warrior
Sirenflower
Skullwraith
Snake, Rock Rattler
Spider, Giant Hunting
Spider, Giant Shroud
Spider, White Widow
Steam Weevil
Swamp Velya
Tiger, Ebon
Vampire Roses
Water Weird
Wyrd
And, although not OD&D, the following are Mystara monsters updated to 2E:
MC Mystara Appendix
Actaeon
Agarat
Ash Crawler
Baldandar
Bargda
Bhut --> Fiend Folio, although seems different
Bird, Magpie
Bird, Giant Magpie
Bird, Piranhabird (lesser & greater)
Bird, Sprackle (lesser & greater)
Blackball --> Epic Level Handbook
Brain Collector --> Epic Level Handbook
Chevall
Choker --> Monster Manual
Coltpixy
Crone of Chaos
Darkhood
Darkwing
Decapus --> Tome of Horrors
Deep Glaurant
Diabolus
Dragon, Crystalline
Dragon, Jade
Dragon, Onyx
Dragon, Ruby
Dragonfly (White, Black, Green, Blue, Red)
Drake, Mystaran (Mandrake, Wooddrake, Colddrake, Elemental Drake)
Dusanu -->
Ebon Tiger
Elementals of Chaos (Air, Earth, Fire, Water)
Elementals of Law (Air, Earth, Fire, Water)
Familiars (Aryth, Bogan, Fylgar, Gretch, Ulzaq)
Frost Salamander --> Monster Manual 2
Fundamental (Air, Earth, Fire, Water)
Gargantua (carrion crawler, troll <-- kaiju template ?)
Geonid
Ghostly Horde
Giant, Athach --> Monster Manual (ironically, no more a giant)
Giant, Hephaeston
Golem, Amber
Golem, Drolem --> Monster Manual 2
Golem, Iron Gargoyle
Golem, Mud
Golem, Rock
Golem, Silver
Golem, Skeletal
Gray Philosopher
Guardian Horse
Guardian Warrior
Gyerian
Herex (Larva, Adult)
Hivebrood (Broodling, Soldier, Lieutenant, Mother, Controller)
Horde
Hsiao
Huptzeen
Hutakaan
Imp (Wood, Bog, Garden)
Jellyfish, Giant (Marauder, Death's hand, Galley)
Kna
Kopru --> Monster Manual 2
Living Statue (Crystal, Iron, Jade, Rock, Ooze, Silver, Steel)
Lizards (Draco, Giant Footpad, Giant Gecko, Giant Tuatara, Horned Chameleon, Lava, Rockhome, Xytar)
Lizard-kin (Cayman, Chameleon Man, Gator Man, Sis'thik)
Lupin
Lycanthrope, Werejaguar
Lycanthrope, Wereswine
Magen (Demos, Caldron, Galvan, Hypnos) --> See there!
Manikin
Mek
Mujina
Nagpa
Nightshades (Nightcrawler, Nightwalker, Nightwing) --> Monster Manual
Nuckalavee
Pegataur -->
Phanaton
Plant, Amber Lotus
Plant, Archer Bush --> Tome of Horrors
Plant, Grab Grass
Plant, Vampire Rose --> Tome of Horrors
Plasm (Normal, Giant)
Rakasta
Rock Man
Saberclaw
Sacrol
Scamille
Shapeshifter, Adaptor
Shapeshifter, Metamorph
Shapeshifter, Polymar -->
Shapeshifter, Randara
Shargugh
Shark-kin
Sollux
Spectral Death
Spectral Hound
Spider-kin, Aranea --> Monster Manual
Spider-kin, Planar Spider
Spider-kin, Ploppéd
Spider-kin, Rhagodessa
Spirit, Druj
Spirit, Odic
Surtaki
Tabi
Thoul -->
Thunderhead
Topi
Tortle
Vampire, Velya
White Fang
Worm (Great Annelid, Caecillia, Desert Leviathan, Fyrsnaca, Marine Leviathan, Red Worm, Slime Worm)
Wyrd (Lesser, Greater)
Yowler
Zombie, Lightning (Lesser, Greater)
MC Savage Coast Appendix
Aranea
Arashaeem
Batracine
Caniquine
Cat, Marine
Cinnavixen
Critter, Temple
Cursed One
Deathmare
Dragon, Introduction
Dragon, Crimson
Dragon, Red Hawk
Echyan
Ee'aar
Enduk
Fachan
Feliquine
Fiend, Narvaezan
Frelôn
Ghriest
Glutton, Sea
Goatman
Golem, Aeldar
Golem, Glassine Horror
Golem, Red
Golem, Juggernaut, Hulean
Grudgling
Heraldic Servant, General
Heraldic Servant, Aurochs
Heraldic Servant, Bear
Heraldic Servant, Bee
Heraldic Servant, Dolphin
Heraldic Servant, Dragon
Heraldic Servant, Eagle
Heraldic Servant, Griffin
Heraldic Servant, Horse
Heraldic Servant, Lion
Heraldic Servant, Phoenix
Heraldic Servant, Ram
Heraldic Servant, Rooster
Heraldic Servant, Sea Horse
Heraldic Servant, Sea Lion
Heraldic Servant, Stag
Heraldic Servant, Swan (black)
Heraldic Servant, Talbot
Heraldic Servant, Tyger
Heraldic Servant, Unicorn
Heraldic Servant, Wyvern
Hermit, Sea
Jorri
Juhrion
Kla'a-Tah
Leech, Legacy
Lich, Inheritor
Lizard Kin
Lupasus
Lupin
Lyra Bird, Saragón
Malfera
Manscorpion, Nimmurian
Mythuínn Folk
Naâruk
Neshezu
Nikt'll
Nosferatu
Omm-wa
Omshirim
Parasite, Lice, Inheritor
Parasite, Moth, Powder
Parasite, Pest, Jibarú
Parasite, Plague, Lupin
Parasite, Tick, Cardinal
Parasite, Vermilia
Phanaton, Jibarú
Plant, Amber Lotus
Plant, Eyeweed
Plant, Fungus, Vermeil
Plant, Pimpernel, Scarlet
Plant, Rosebush, Gargoñan
Pudding, Vermilion
Rakasta
Ray, Forest
Shedu, Greater
Shimmerfish
Skinwing
Spawn of Nimmur
Spider-spy
Spirit, Heroic
Spirit, Wallaran
Succulus
Swampmare
Swordsman, Clockwork
Symbiont Shadow
Tortle
Troll, Legacy
Trosip
Tyminid
Utukku
Voat
Voat, Herathian
Vulturehound
Wallara
Wurmling
Wynzet
Yeshom
Zombie, Red
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