SRD & OGL creatures — full stat blocks. Each entry links its source.
| Name | Type | Size | CR | Source |
|---|---|---|---|---|
| Npc: Breathstealer | Humanoid | Medium | 7 | Tome of Beasts 3 |
| Npc: Cultist Psychophant | Humanoid | Medium | 9 | Tome of Beasts 3 |
| Npc: Field Commander | Humanoid | Medium | 10 | Tome of Beasts 3 |
| Npc: First Servant | Humanoid | Medium | 12 | Tome of Beasts 3 |
| Npc: Fixer | Humanoid | Medium | 2 | Tome of Beasts 3 |
| Npc: Frost-Afflicted | Humanoid | Medium | 3 | Tome of Beasts 3 |
| Npc: Infested Duelist | Humanoid | Medium | 9 | Tome of Beasts 3 |
| Npc: Infiltrator | Humanoid | Medium | 2 | Tome of Beasts 3 |
| Npc: Merchant Captain | Humanoid | Medium | 6 | Tome of Beasts 3 |
| Npc: Warlock Of The Genie Lord | Humanoid | Medium | 5 | Tome of Beasts 3 |
| Npc: Wind Acolyte | Humanoid | Medium | 5 | Tome of Beasts 3 |
| Nullicorn | Aberration | Large | 5 | Tome of Beasts 3 |
| Nyctli | Fey | Tiny | 1/4 | Tome of Beasts 2 |
| Nyctli Swarm | Fey | Large | 10 | Tome of Beasts 2 |
| Oaken Sentinel | Plant | Huge | 10 | Tome of Beasts 3 |
| Oasis Keeper | Monstrosity | Huge | 9 | Tome of Beasts 2 |
| Obeleric | Aberration | Medium | 3 | Tome of Beasts 3 |
| Obsidian Ophidian | Elemental | Huge | 5 | Tome of Beasts 3 |
| Oculo Swarm | Aberration | Large | 4 | Tome of Beasts |
| Oculo Swarm | Swarm | Large | ||
| Offal Walker | Undead | Medium | 1 | Tome of Beasts 3 |
| Ogre | Giant | Large | 2 | 5e Core Rules |
| Ogre | Giant | Large | 2 | Level Up Advanced 5e Monstrous Menagerie |
| Ogre | Giant | large | 2 | Black Flag SRD |
| Ogre Chieftain, Corrupted | Giant | Large | 6 | Tome of Beasts |
| Ogre Flesh Heap | Undead | Large | 4 | Level Up Advanced 5e Monstrous Menagerie |
| Ogre Mage | Giant | Large | 7 | Level Up Advanced 5e Monstrous Menagerie |
| Ogre Zombie | Undead | large | 2 | Black Flag SRD |
| Ogre Zombie | Undead | Large | 2 | 5e Core Rules |
| Ogre Zombie | Undead | Large | 2 | Level Up Advanced 5e Monstrous Menagerie |
| Ogre, Alleybasher | Giant | Large | 4 | Tome of Beasts 3 |
| Ogre, Black Sun | Giant | Large | 8 | Tome of Beasts 3 |
| Ogre, Cunning Artisan | Giant | Large | 5 | Tome of Beasts 3 |
| Ogre, Kadag | Giant | Large | 7 | Tome of Beasts 3 |
| Ogre, Rainforest | Giant | Large | 4 | Tome of Beasts 3 |
| Ogre, Rockchewer | Giant | Huge | 5 | Tome of Beasts 3 |
| Ogre, Void Blessed | Giant | Large | 6 | Tome of Beasts 3 |
| Ogrekin | Humanoid | Medium | 1 | Level Up Advanced 5e Monstrous Menagerie |
| Ogrepede | Undead | Huge | 6 | Tome of Beasts 2 |
| Old Salt | Undead | Medium | 5 | Tome of Beasts 3 |
| Ooze |
| large |
| 2 |
| Black Flag SRD |
| Ooze |
| Large |
| 2 |
| 5e Core Rules |
| Ooze |
| Large |
| 2 |
| Level Up Advanced 5e Monstrous Menagerie |
| Beast |
| Small |
| 0 |
| 5e Core Rules |
| Beast |
| Tiny |
| 0 |
| Level Up Advanced 5e Monstrous Menagerie |
| Beast |
| small |
| 0 |
| Black Flag SRD |
| Beast |
| large |
| 1 |
| Black Flag SRD |
| 4 |
| Tome of Beasts 2023 |
| Beast |
| Gargantuan |
| 8 |
| Creature Codex |