| Monster | AC | HD | Terrain | Climate | Attacks | Damage | Setting |
|---|---|---|---|---|---|---|---|
| Aarakocra | 7 | 1+2 | Any | Temp/Trop | 2 | 1d3/1d3 or weapon | Any |
| Aasimar | 3 (10) | 3+3 | Any | Any | 1 | 1d3 or weapon | Planescape |
| Aasimon, Agathinon | 0 | 8 | Any | Any | 1 | weapon or special | Planescape |
| Aasimon, Deva, Astral | -5 | 12 | Any | Any | 2 | 3d6/3d6 | Planescape |
| Aasimon, Deva, General | Any | Any | Planescape | ||||
| Aasimon, Deva, Monadic | -3 | 10 | Any | Any | 2 | 3d4/3d4+8 | Planescape |
| Aasimon, Deva, Movanic | -1 | 8 | Any | Any | 2 | by weapon | Planescape |
| Aasimon, General | Any | Any | Planescape | ||||
| Aasimon, Light | -10 | 10 | Any | Any | 1 | 1d12 | Planescape |
| Aasimon, Planetar | -7 | 14 | Any | Any | 3 | 1d10+10 (STR & magic) | Planescape |
| Aasimon, Solar | -10 | 22 (177 hp) | Any | Any | 4 | 2d20+16 | Planescape |
| Aballin | 4 | 3 | Subterranean | Temp/Trop | 1 | Any | |
| Aboleth | 4 | 8 | Subterranean | Temp/Trop | 4 | 1d6 (4x) | Any |
| Aboleth, Savant | 2 | 12+12 | Subterranean | Any | 4 or 1 | 1d6+special (x4) or spell | Any |
| Abrian | 6 | 2+3 | Any | Any | 2 | 1d3/1d8 | Planescape |
| Achaierai | 8/-1 | 4 (40 hp) | Subterranean | Any | 3 | 1d8/1d8/1d10 | Any |
| Actaeon | 3 | 11 | Forests | Temp/Trop | 3 | 1d6+6/1d6+6/2d8 | Any |
| Adaptor | 9 | 8 | Any | Any | 2 | 1d8+4/1d8+4 | Any |
| Addazahr | 4 | 1 hp | Plains | Temp/Trop | 1 | 1 + disease | Any |
| Adherer | 3 | 4 | Forests | Temperate | 1 | 1d3 | Any |
| Afanc | 6 | 15 | Water, Ocean | Temp/Trop | 1 or 2 | 5d4 (bite) or 3d4/3d4 (flipper) | Any |
| Afanc, Young | 6 | 5 | Water, Ocean | Temp/Trop | 1 or 2 | 3d4 (bite) or1d4/1d4 (flipper) | Any |
| Akikage | 1 | 6+3 | Any | Any | 4 | 1d6 (x4) | Ravenloft |
| Al-mi'raj | 6 | 1 | Forests | Temperate | 1 | 1d4 | Any |
| Al-mi'raj, Psionic | 6 | 1 | Forests | Temperate | 1 | 1d4 | Any |
| Alaghi | 4 | 9 | Forests | Temperate | 2 | 2d6/2d6 or 2d6/weapon +5 | Any |
| Alaghi, Elder | 4 | 10 | Forests | Temperate | 2 | 2d6/2d6 or 2d6/weapon +5 | Any |
| Alaghi, Hermitic | 4 | 11 | Forests | Temperate | 2 | 2d6/2d6 or 2d6/weapon +5 | Any |
| Alaghi, Young | 4 | 3 | Forests | Temperate | 2 | 1d6/1d6 | Any |
| Aleax | varies | varies | Any | Any | varies | varies | Any |
| Algoid | 5 | 5 | Swamp | Temperate | 2 | 1d10/1d10 | Any |
| Alguduir (Swamp Dragon) | 6 | 4+4 | Swamp | Any | 5 | 1d4+1/1d4+1/1d3+1/1d3+1/1d6 | Forgotten Realms |
| Alguduir, Young | 8 | 1+1 | Swamp | Any | 3 | 1d2/1d2/1d4 | Forgotten Realms |
| Amiq Rasol | 4 | 9 | Coast | Any | 3 | 1d4/1d4/1d6 | Any |
| Anemone, Giant | 2 | 16 | Water, Salt | Temp/Trop | 1-3 | 1d4 | Dragonlance |
| Animal Herd | 7 | 1 to 4 | Plains | Any | 1 | 1d4 or 1d6 or 1d8 | Any |
| Animal Lord, Cat Lord | 3 | 15 (122 hp) | Any | Any | 2 or 3 | 1d8+2 or 1d3+2 or 1d4/1d4/1d10 | Planescape |
| Animal Lord, General | Any | Any | Planescape | ||||
| Animal Lord, Hawk Lord | 4 | 15 (122 hp) | Any | Any | 1 or 3 | by weapon or 1d6/1d6/1d4 | Planescape |
| Animal Lord, Lizard Lord | 3 | 15 (122 hp) | Any | Any | 1 | 2d6 or special | Planescape |