174 monsters in this familia.
| Name | Type | Size | CR | Source |
|---|---|---|---|---|
| Stellar Rorqual | Aberration | Gargantuan | 12 | Tome of Beasts 2 |
| Swarm of Khalkos Spawn | Aberration | Medium | 2 | Level Up Advanced 5e Monstrous Menagerie |
| Tallyworm | aberration | Tiny | 1/4 | FTTHelper Original Content |
| The Flesh | Aberration | Medium | 4 | Tome of Beasts 3 |
| The Orb-Tyrant | aberration | Medium | 6 | FTTHelper Original Content |
| The Thought-Drinker | aberration | Medium | 7 | FTTHelper Original Content |
| The Watcher in the Void | aberration | Large | 13 | FTTHelper Original Content |
| Tidewarden of the Old Lighthouse | aberration | Gargantuan | 17 | FTTHelper Original Content |
| Transcendent Lunarchida | Aberration | Medium | 6 | Tome of Beasts 2 |
| Tusked Skyfish | Aberration | Large | 4 | Tome of Beasts |
| Tusked Skyfish | Aberration | Large | 4 | Tome of Beasts 2023 |
| Ulnorya | Aberration | Large | 7 | Tome of Beasts 2 |
| Umbral Shambler | Aberration | Medium | 2 | Tome of Beasts 3 |
| Ur-Otyugh | Aberration | Large | 10 | Level Up Advanced 5e Monstrous Menagerie |
| Urochar | Aberration | Huge | 17 | Tome of Beasts 2023 |
| Urochar (Strangling Watcher) | Aberration | Huge | 17 | Tome of Beasts |
| Vallowex | Aberration | Large | 7 | Tome of Beasts 2 |
| Vangsluagh | Aberration | Medium | 4 | Tome of Beasts 2 |
| Void Tithe | aberration | Medium | 6 | FTTHelper Original Content |
| Voidling | Aberration | Large | 11 | Tome of Beasts 2023 |
| Voidling | Aberration | Large | 11 | Tome of Beasts |
| Wardu | Aberration | Medium | 6 | Tome of Beasts 2 |
| Whisperer in Darkness | Aberration | Medium | 15 | Creature Codex |
| Xenabsorber | Aberration | Medium | 3 | Creature Codex |
| Xhkarsh | Aberration | Large | 8 | Tome of Beasts |
| Xhkarsh | Aberration | Large | 9 | Tome of Beasts 2023 |
| Yann-An-Oed | Aberration | Huge | 2 | Creature Codex |
| Yavalnoi | Aberration | Large | 6 | Tome of Beasts 2 |
| Ziphius | Aberration | Gargantuan | 8 | Creature Codex |
| Zoog | Aberration | Tiny | 0 | Creature Codex |