| Name | Map Tool Token Link | Family | Type | Size | CR |
|---|---|---|---|---|---|
| Baboon | |
Baboon | Animal | Medium | 1/2 |
| Badger | |
Badger | Animal | Small | 1/2 |
| Banshee | |
Banshee | Undead | Medium | 17 |
| Barghest | |
Barghest | Outsider | Medium | 4 |
| Greater Barghest | |
Barghest | Outsider | Large | 5 |
| Basilisk | |
Basilisk | Magical Beast | Medium | 5 |
| Abyssal Greater Basilisk | |
Basilisk | Outsider | Large | 12 |
| Bat | |
Bat | Animal | Diminutive | 1/10 |
| Black Bear | |
Bear, Black | Animal | Medium | 2 |
| Brown Bear | |
Bear, Brown | Animal | Large | 4 |
| Polar Bear | |
Bear, Polar | Animal | Large | 4 |
| Behemoth Eagle | |
Behemoth | Outsider | Colossal | 18 |
| Behemoth Gorilla | |
Behemoth | Outsider | Huge | 19 |
| Behir | |
Behir | Magical Beast | Huge | 8 |
| Beholder | |
Beholder | Aberration | Large | 13 |
| Gauth | |
Beholder | Aberration | Medium | 6 |
| Belker | |
Belker | Elemental | Large | 6 |
| Bison | |
Bison | Animal | Large | 2 |
| Bladeling | |
Bladeling | Outsider | Medium | 1 |
| Blink Dog | |
Blink Dog | Magical Beast | Medium | 2 |
| Blood Ape | |
Blood Ape | Magical Beast | Large | 6 |
| Blood Elemental | |
Blood Elemental | Outsider | Medium | 6 |
| 1st-Level Psion (Telepath) Blue | |
Blue | Humanoid | Small | 1 |
| Boar | |
Boar | Animal | Medium | 2 |
| Bodak | |
Bodak | Undead | Medium | 8 |
| Boggle | |
Boggle | Monstrous Humanoid | Small | 3 |
| Bogun | |
Bogun | Construct | Tiny | 1 |
| Bone Naga | |
Bone Naga | Undead | Large | 11 |
| Bone Ooze | |
Bone Ooze | Ooze | Gargantuan | 21 |
| Brachyurus | |
Brachyurus | Magical Beast | Large | 23 |
| Brain Mole | |
Brain Mole | Magical Beast | Tiny | 1/2 |
| Bralani | |
Bralani | Outsider | Medium | 6 |
| Braxat | |
Braxat | Monstrous Humanoid | Large | 9 |
| Breathdrinker | |
Breathdrinker | Elemental | Medium | 7 |
| Bronze Serpent | |
Bronze Serpent | Construct | Huge | 10 |
| Bugbear | |
Bugbear | Humanoid | Medium | 2 |
| Bulette | |
Bulette | Magical Beast | Huge | 7 |