| Name | Map Tool Token Link | Family | Type | Size | CR |
|---|---|---|---|---|---|
| Yellow Musk Creeper | RPTok | Yellow Musk Creeper | Plant | Medium | 2 |
| Yeth Hound | |
Yeth Hound | Outsider | Medium | 3 |
| Yeti | RPTok | Yeti | Monstrous humanoid | Large | 4 |
| Young Black Dragon | |
Chromatic Dragon | Dragon | Medium | 7 |
| Young Blue Dragon | |
Chromatic Dragon | Dragon | Large | 9 |
| Young Brass Dragon | |
Metallic Dragon | Dragon | Medium | 7 |
| Young Bronze Dragon | |
Metallic Dragon | Dragon | Large | 9 |
| Young Copper Dragon | |
Metallic Dragon | Dragon | Medium | 8 |
| Young Gold Dragon | |
Metallic Dragon | Dragon | Large | 11 |
| Young Green Dragon | |
Chromatic Dragon | Dragon | Large | 8 |
| Young Red Dragon | |
Chromatic Dragon | Dragon | Large | 10 |
| Young Silver Dragon | |
Metallic Dragon | Dragon | Large | 10 |
| Young White Dragon | |
Chromatic Dragon | Dragon | Medium | 6 |