Fallout creatures

[Mandarb34]

I'm about to start DMing a game set in Fallout, and while the MM has scorpions that will work well enough for Rad scorps, I need more to throw at them then human raiders and radscorpions. Hoping that someone here could help with super mutants, deathclaws, ghouls, and any other creature that would fit in a fallout world.

 

[Elder-Basilisk]

Supermutants=Radiation immune ogres.
Deathclaws are a bit harder. Maybe Gray Renders?
Brahmin=bison with the special abilities of an ettin?
Geckos=Crested Felldrakes? (see Chainmail stat cards on the WotC site)
Ghouls=Radiation immune elves with a charisma penalty? +2 dex, -2 charisma, +2 spot/listen/search (that would be consistent with what I remember of ghouls increased dexterity and perception in Fallout: Tactics.

I'm not sure about the Gray Aliens from Fallout II or the Centaurs and Floaters.

 

[RickVigorous]

Floaters (or something much like them) existed in 2nd edition Dark Sun. Here's a rough conversion. I hope this is readable.

FLOATER
Small Aberration
Hit Dice: 3d8+3 (16 hp)
Initiative: +0
Speed: Fly 30 ft. (good)
AC: 13 (+1 size, +2 natural), touch 11, flat-footed 13
Attacks: 6 tentacles +4 melee
Damage: Tentacle 1d4+1 and poison
Face/Reach: 5 ft. by 5 ft./5 ft.
Special Attacks: Poison
Special Qualities: Fire vulnerability
Saves: Fort +2, Ref +1, Will +3
Abilities: Str 12, Dex 10, Con 12, Int 7, Wis 10, Cha 10
Skills: Hide +10, Search +4, Spot +6
Feats: —
Climate/Terrain: Any warm land
Organization: Solitary or flock (2-8)
Challenge Rating: 2
Treasure: None
Alignment: Always neutral
Advancement: 4-6 HD (Small); 7-9 HD (Medium)

Poison (Ex): Fort save (DC 13), initial damage paralysis, secondary damage 0. Paralysis from floater poison lasts 2d6 minutes.
Fire Vulnerability (Ex): Floaters are filled with a flammable gas. A floater that suffers fire damage must make a Fort save (DC 18) or explode, killing the floater and inflicting 1d8 fire damage to everything within 10 feet. A successful Reflex save (DC 13) halves this damage.

As for the rest... Elder-basilisk seems to have pretty good ideas.