| Name | Type | Challenge rating | Description |
|---|---|---|---|
| Aboleth | Aberration | 10 | |
| Acolyte | Humanoid | 1/4 | |
| Adult Black Dragon | Dragon | 14 | |
| Adult Blue Dragon | Dragon | 16 | |
| Adult Brass Dragon | Dragon | 13 | |
| Adult Bronze Dragon | Dragon | 15 | |
| Adult Copper Dragon | Dragon | 14 | |
| Adult Gold Dragon | Dragon | 17 | |
| Adult Green Dragon | Dragon | 15 | |
| Adult Red Dragon | Dragon | 17 | |
| Adult Silver Dragon | Dragon | 16 | |
| Adult White Dragon | Dragon | 13 | |
| Air Elemental | Elemental | 5 | |
| Ancient Black Dragon | Dragon | 21 | |
| Ancient Blue Dragon | Dragon | 23 | |
| Ancient Brass Dragon | Dragon | 20 | |
| Ancient Bronze Dragon | Dragon | 22 | |
| Ancient Copper Dragon | Dragon | 21 | |
| Ancient Gold Dragon | Dragon | 24 | |
| Ancient Green Dragon | Dragon | 22 | |
| Ancient Red Dragon | Dragon | 24 | |
| Ancient Silver Dragon | Dragon | 23 | |
| Ancient White Dragon | Dragon | 20 | |
| Androsphinx | Monstrosity | 17 | |
| Animated Armor | Construct | 1 |