| Name | CR | MR | Type | Environment |
| Titan, Danava | 24 | 9 | outsider (extraplanar, lawful, mythic) | any |
| Titan, Fomorian Titan | 22 | 8 | outsider (chaotic, evil, extraplanar, mythic) | any (Abyss) |
| Treant | 10 | 4 | plant (mythic) | any forest |
| Troll | 6 | 2 | humanoid (giant, mythic) | cold mountains |
| Tyrant Jelly | 9 | 3 | ooze (mythic) | any underground |