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Odonatid, Giant (Dainty Giant Damselfly) Tiny beast, unaligned Armor Class 13 Hit Points 3 (2d4 – 2) Speed 10 ft., fly 30 ft. (hover) STR DEX CON INT WIS CHA 3 (–4) 16 (+3) 8 (–1) 1 (–5) 12 (+1) 5 (–2) Saving Throws DEX +6 Skills Perception +3 Senses passive Perception 13 Languages —...

Odonatid, Giant (Diminutive Giant Dragonfly Nymph) Small beast, unaligned Armor Class 14 (natural armor) Hit Points 10 (3d6) Speed 30 ft., swim 10 ft. STR DEX CON INT WIS CHA 8 (–1) 14 (+2) 11 (+0) 1 (–5) 12 (+1) 5 (–2) Skills Stealth +6 Senses blindsight 10 ft., passive Perception 11...

Odonatid, Giant (Diminutive Giant Dragonfly) Small beast, unaligned Armor Class 14 Hit Points 7 (2d6) Speed 10 ft., fly 50 ft. (hover) STR DEX CON INT WIS CHA 7 (–2) 18 (+4) 10 (+0) 1 (–5) 12 (+1) 5 (–2) Saving Throws DEX +6 Skills Perception +3 Senses passive Perception 13 Languages —...

Odonatid, Giant (Titanic Tropical Dragonfly Nymph) Huge beast, unaligned Armor Class 15 (natural armor) Hit Points 105 (10d12 + 40) Speed 30 ft., swim 10 ft. STR DEX CON INT WIS CHA 24 (+7) 14 (+2) 19 (+4) 1 (–5) 12 (+1) 5 (–2) Skills Stealth +5 Senses blindsight 30 ft., passive...

Odonatid, Giant (Titanic Tropical Dragonfly) Huge beast, unaligned Armor Class 15 (natural armor) Hit Points 95 (10d12 + 30) Speed 10 ft., fly 80 ft. (hover) STR DEX CON INT WIS CHA 24 (+7) 17 (+3) 16 (+3) 1 (–5) 12 (+1) 5 (–2) Saving Throws DEX +6 Skills Perception +4 Senses passive...

Since I've made decent progress on the Mammoth helicopter and come up with some more tweaks to the stats & descriptions of the others, it's time for another update. Updating the Giant Damselfly. Updating the Giant Dragonfly. Updating the Giant Emperor Dragonfly. Updating the Giant Tropical...

Here's the "juicy bit" of the Mammoth Helicopter. I intend to write up a Description with all sorts of interesting fluff for the Underdark variant, but the following contains all the rule elements. VARIANT: MAMMOTH UNDERDARK DAMSELFLY This is a Huge underdark damselfly, one of the rare few who...

From what I can tell, Meganeuropsis is thought to be even bigger than a Meganeura. It's hard to tell, since the fossils of the latter are even fewer and more fragmentary than Meganeuropsis remains. I reckon the Meganisoptera are likely more analogous to the Giant Damselflies I've been statting...

Hmm, I wonder how big the largest Meganisoptera would become if scaled up at those ratios? Estimates of Meganeuropsis and Meganeura appear to go up to 35cm length, 75 cm wingspan, and 150g weight. That's roughly 14 inches long, 30 inch wingspan, and about a third of a pound. If I use the...

A word on scale. My general rule-of thumb for Giant Arthropods is to scale them up by ×72 or ×100. The former turns an inch-long bug int a 6-foot bug, while with the latter a centimetre-long spider becomes a metre-long spider. However, I might warp the scaling up or down a bit (e.g. ×36, ×50...

I'll slap Perception on the next Updates. Just to be clear, by "cool variants" I was talking about Variants of the Giant Odonatids, as in "Variant: Some-Cool-Thing Damselfly" or "Variant: I-Wanna-Kill-Your-PC Nymph." I wasn't planning on doing a "Variant: Draconic Odonatic" subentry just adds...

This is what I've got so far: Description Helicopter damselflies include the longest and widest of all Odonata, with even the mundane species growing up to 6 inches in length (The giant helicopter Mecistogaster linearis) or an 8 inch wingspan (The blue-winged helicopter Megaloprepus...

I'm wondering about giving some of the Giant Odonatids proficiency in Perception, since they're said to have the best vision of any insect. Maybe drop their Wisdom a couple of points to WIS 10 (+0) and give them Skills Perception +2 (the same as a Giant Poisonous Snake, Octopus, or Shark and...

EDIT: And the answer is… might as well! Started a Converting BECMI Monsters to Fifth Edition thread and updated the Completed Fifth Edition Creatures Index to account for it. Which reminds me, would you mind doing a D&D Beyond version my Grassling conversion so I can update the Indexes? The...

This thread is a placeholder for Fifth Edition conversions of monsters unique to the Basic-Expert-Companion-Master-Immortal series of Dungeons & Dragons rules. Finished conversions will be added to the Completed Fifth Edition Creatures Index. Note the Index of 5th Edition BECMI Conversions...

Renamed them from the original BECMI "Dragonfly" to "Dragon Fly" to further distinguish them from the fully insectile "Odonatid, Giant (Giant Dragonfly)". Also added five subentries for each colour of Dragon Fly. Should I create a thread for BECMI conversions to do them in? Assuming we ever...

Just remembered you said we "have to do" the BECMI Dragonfly, so I've added those to the Want List. Look, I'm only doing Arthropods here, the other spineless wonders will have to wait! :p

I've replaced this post with a Want List of Monstrous Arthropods.

I'd copy-and-pasted some of the lengths and weighs into the wrong Odonatids and had to edit the previous post. Speaking of which. Glanced through that paper and it includes some figures for bodyweight of regular dragonflies. That's very handy, since I can use them to fact check whether my...

Decided to go for: Giant Damselfly 6 feet long, 6 to 8 foot wingspan, weight 50 pounds;  Variant: Small Giant Dragonfly 4 to 4½ foot long, 7 foot wingspan. Giant Dragonfly 7 to 8 feet long, 10 to 12 foot wingspan, weight 250 pounds;  Variant: Big Giant Damselfly 10 foot long, 10 to 14 foot...