| Name | Map Tool Token Link | Family | Type | Size | CR |
|---|---|---|---|---|---|
| Aboleth | |
Aboleth | Aberration | Huge | 7 |
| 10th-Level Wizard Aboleth Mage | |
Aboleth | Aberration | Huge | 17 |
| Psionic Aboleth | |
Aboleth, Psionic | Aberration | Huge | 7 |
| Athach | |
Athach | Aberration | Huge | 8 |
| Average Psurlon | |
Psurlon | Aberration | Medium | 5 |
| Avolakia | |
Avolakia | Aberration | Large | 10 |
| Beholder | |
Beholder | Aberration | Large | 13 |
| Carrion Crawler | |
Carrion Crawler | Aberration | Large | 4 |
| Catoblepas | |
Catoblepas | Aberration | Huge | 6 |
| Choker | |
Choker | Aberration | Small | 2 |
| Chuul | |
Chuul | Aberration | Large | 7 |
| Cloaker | |
Cloaker | Aberration | Large | 5 |
| Dark Naga | |
Naga | Aberration | Large | 8 |
| Darktentacles | |
Darktentacles | Aberration | Large | 7 |
| Delver | |
Delver | Aberration | Huge | 9 |
| Destrachan | |
Destrachan | Aberration | Large | 8 |
| Drider | |
Drider | Aberration | Large | 7 |
| 1st-Level Warrior Elan | |
Elan | Aberration | Medium | 1/2 |
| Ethereal Filcher | |
Ethereal Filcher | Aberration | Medium | 3 |
| Ettercap | |
Ettercap | Aberration | Medium | 3 |
| Fihyr | |
Fihyr | Aberration | Small | 3 |
| Great Fihyr | |
Fihyr | Aberration | Medium | 15 |
| Folugub | |
Folugub | Aberration | Medium | 2 |
| Gauth | |
Beholder | Aberration | Medium | 6 |
| Giant Psurlon | |
Psurlon | Aberration | Large | 15 |
| Gibbering Mouther | |
Gibbering Mouther | Aberration | Medium | 5 |
| Gibbering Orb | |
Gibbering Orb | Aberration | Huge | 27 |
| Grell | |
Grell | Aberration | Medium | 3 |
| Grick | |
Grick | Aberration | Medium | 3 |
| Guardian Naga | |
Naga | Aberration | Large | 10 |
| Ha-Naga | |
Ha-Naga | Aberration | Colossal | 22 |
| Hagunemnon | |
Hagunemnon | Aberration | Large | 29 |
| Hook Horror | |
Hook Horror | Aberration | Large | 6 |
| Intellect Devourer | |
Intellect Devourer | Aberration | Small | 7 |
| Average Ixitxachitl | |
Ixitxachitl | Aberration | Small | 1 |
| Vampiric Ixitxachitl | |
Ixitxachitl | Aberration | Small | 3 |
| Julajimus | |
Julajimus | Aberration | Huge | 12 |
| Meenlock | |
Meenlock | Aberration | Tiny | 3 |
| Mimic | |
Mimic | Aberration | Large | 4 |
| Mind Flayer | |
Mind Flayer | Aberration | Medium | 8 |
| Mind Flayer 9th-Level Sorcerer | RPTok | Mind Flayer | Aberration | Medium | 17 |
| Moonbeast | RPTok | Moonbeast | Aberration | Huge | 16 |
| Morkoth | RPTok | Morkoth | Aberration | Medium | 5 |
| Neh-Thalggu | RPTok | Neh-Thalggu | Aberration | Huge | 26 |
| Neogi Spawn | RPTok | Neogi | Aberration | Tiny | 1/4 |
| Adult Neogi | RPTok | Neogi | Aberration | Small | 4 |
| Neothelid | RPTok | Neothelid | Aberration | Gargantuan | 15 |
| Otyugh | |
Otyugh | Aberration | Large | 4 |
| Phasm | |
Phasm | Aberration | Medium | 7 |
| Elder Psurlon | |
Psurlon | Aberration | Medium | 9 |
| Rust Monster | |
Rust Monster | Aberration | Medium | 3 |
| Skum | |
Skum | Aberration | Medium | 2 |
| Spirit Naga | RPTok | Naga | Aberration | Large | 9 |
| Temporal Filcher | RPTok | Temporal Filcher | Aberration | Large | 3 |
| Thorciasid | RPTok | Thorciasid | Aberration | Medium | 22 |
| Thought Eater | RPTok | Thought Eater | Aberration | Small | 2 |
| Thought Slayer | RPTok | Thought Slayer | Aberration | Huge | 13 |
| Umber Hulk | |
Umber Hulk | Aberration | Large | 7 |
| Truly Horrid Umber Hulk | |
Umber Hulk | Aberration | Huge | 14 |
| Vermiurge | RPTok | Vermiurge | Aberration | Large | 24 |
| Water Naga | RPTok | Naga | Aberration | Large | 7 |
| Will-O'-Wisp | RPTok | Will-O'-Wisp | Aberration | Small | 6 |
| Windghost | RPTok | Windghost | Aberration | Huge | 15 |
| Worm that Walks | RPTok | Worm that Walks | Aberration | Medium | 26 |
| Wyste | RPTok | Wyste | Aberration | Huge | 5 |