| Name | CR | Type | Environment |
| Aashaq's Wyvern | 8 | dragon | temperate or warm hills |
| Aasimar | 1/2 | outsider (native) | any land |
| Aatheriexa | 7 | aberration | any land |
| Abaia | 10 | magical beast (aquatic) | warm lakes |
| Aballonian | 7 | construct | Aballon |
| Abandoned Armory | 13 | construct | any plain or battlefield |
| Abandoned One | 4 | undead | any forest or swamp |
| Abhominal | 6 | undead | any |
| Abrakarn Viper | 13 | construct (chaotic, evil) | any land |
| Abysogh | 15 | humanoid (giant) | any mountains |
| Achaekek, the Mantis God | 30 | outsider (lawful, evil, extraplanar) | any |
| Achaierai | 5 | outsider (evil, extraplanar, lawful)
| any land (Hell)
|
| Adaptive Ooze | 7 | ooze | any land |
| Adaro | 3 | monstrous humanoid (aquatic) | warm oceans |
| Addu | 15 | magical beast (aquatic) | warm oceans |
| Adherer | 3 | monstrous humanoid | any temperate or underground |
| Adlet | 10 | humanoid (adlet, cold) | cold plains, hills, or mountains |
| Aeon, Agnoia | 14 | outsider (aeon, extraplanar) | any (Outer Planes) |
| Aeon, Akhana | 12 | outsider (aeon, extraplanar)
| any (Outer Planes)
|
| Aeon, Bythos | 16 | outsider (aeon, extraplanar)
| any (Outer Planes)
|
| Aeon, Lipika | 18 | outsider (aeon, extraplanar) | any (Outer Planes) |
| Aeon, Othaos | 5 | outsider (aeon, extraplanar) | any (Outer Planes) |
| Aeon, Paracletus | 2 | outsider (aeon, extraplanar)
| any (Outer Planes)
|
| Aeon, Pleroma | 20 | outsider (aeon, extraplanar)
| any (Outer Planes)
|
| Aeon, Synesis | 4 | outsider (aeon, extraplanar) | any (Outer Planes) |
| Aeon, Theletos | 7 | outsider (aeon, extraplanar)
| any (Outer Planes)
|
| Aerial Servant | 11 | outsider (air, elemental, extraplanar) | any (Plane of Air) |
| Agathion, Avoral | 9 | outsider (agathion, extraplanar, good)
| any air (Nirvana)
|
| Agathion, Bishop Agathion | 4 | outsider (aquatic, extraplanar, good) | any waters (Nirvana) |
| Agathion, Cervapral | 5 | outsider (agathion, extraplanar, good) | any land (Nirvana) |
| Agathion, Cervinal | 17 | outsider (agathion, extraplanar, good) | any land (Nirvana) |
| Agathion, Cetaceal | 15 | outsider (agathion, aquatic, extraplanar, good)
| any water (Nirvana)
|
| Agathion, Chelonidal | 7 | outsider (agathion, aquatic, extraplanar, good) | any land or water (Nirvana) |
| Agathion, Draconal | 20 | outsider (agathion, extraplanar, good)
| any air (Nirvana)
|
| Agathion, Leonal | 12 | outsider (agathion, extraplanar, good)
| any land (Nirvana)
|
| Agathion, Muldnal | 3 | outsider (agathion, extraplanar, good) | any underground (Nirvana) |
| Agathion, Mustelidal | 16 | outsider (agathion, extraplanar, good) | any underground (Nirvana) |
| Agathion, Procyal | 8 | outsider (agathion, extraplanar, good) | any urban (Nirvana) |
| Agathion, Reptial | 4 | outsider (agathion, extraplanar, good) | any land (Nirvana) |
| Agathion, Silvanshee | 2 | outsider (agathion, extraplanar, good)
| any land (Nirvana)
|
| Agathion, Vulpinal | 6 | outsider (agathion, extraplanar, good)
| any land (Nirvana)
|
| Agmazar the Star Titan | 26 | undead (cold, kaiju) | — |
| Agrawgh | 5 | outsider (earth, extraplanar) | any underground (Plane of Earth) |
| Ahkhat | 4 | outsider (earth, elemental, native) | warm urban |
| Ahool | 9 | magical beast | warm forests or warm ruins |
| Ahriman, Lord of All Divs | 26 | outsider (div, evil, extraplanar) | — |
| Ahuizotl | 6 | magical beast (aquatic) | warm lakes, rivers, or swamps |
| Akaname | 1 | aberration | any urban or underground |
| Akaruzug | 15 | construct | any ruins |
| Akata | 1 | aberration
| any
|
| Akhlut | 13 | magical beast (cold, shapechanger) | cold lakes, plains, or oceans |
| Akilep, Lady of Stone | 13 | magical beast | — |
| Alchemical Ooze Swarm, Choleric Ooze Swarm | 2 | ooze (swarm) | any underground |
| Alchemical Ooze Swarm, Melancholic Ooze Swarm | 1 | ooze (swarm) | any underground |
| Alchemical Ooze Swarm, Phlegmatic Ooze Swarm | 1/2 | ooze (swarm) | any underground |
| Alchemical Ooze Swarm, Sanguine Ooze Swarm | 1/3 | ooze (swarm) | any underground |
| Alghollthu, Aboleth | 7 | aberration (aquatic) | any aquatic |
| Alghollthu, Enisysian | 4 | aberration (aquatic, shapechanger) | any water |
| Alghollthu, Omnipath | 18 | aberration (aquatic) | any water |
| Alghollthu, Omnipath | 18 | aberration (aquatic) | any water |
| Alghollthu, Plizeazoth | 12 | aberration (aquatic) | any water |
| Alghollthu, Thalassic Architect | 10 | aberration (aquatic) | any water |
| Alghollthu, Veiled Master | 14 | aberration (aquatic, shapechanger) | any water |
| Allip | 3 | undead (incorporeal) | any |
| Almiraj | 1 | magical beast | temperate hills, plains, or forests |
| Alp | 10 | fey | any land |
| Alpluachra | 1/2 | fey (aquatic) | temperate forests or fresh water |
| Alraune | 13 | plant | temperate forests |
| Alter Ego, Annis Hag Alter Ego | 6 | construct | cold swamps |
| Aluum | 10 | construct | any (Katapesh) |
| Amalya | 6 | fey
| — |
| Amarok | 12 | magical beast | cold forests or tundra |
| Ambergrim | 6 | ooze | any forest |
| Ammut | 18 | outsider (evil, native) | any (Osirion) |
| Amoeba, Amoeba Swarm | 1 | ooze (swarm)
| any land or underground
|
| Amoeba, Giant Amoeba | 1 | ooze (aquatic)
| any land or underground
|
| Amphiptere | 4 | dragon | temperate or warm deserts, hills, or mountains |
| Amphisbaena | 4 | magical beast
| temperate hills or underground
|
| Android | 1 | humanoid (android) | any |
| Anemos | 18 | outsider (air, elemental, extraplanar) | any sky (Plane of Air or Material Plane) |
| Angazhani (High Girallon) | 9 | magical beast | warm jungle |
| Angel, Astral Deva | 14 | outsider (angel, extraplanar, good) | any good-aligned plane |
| Angel, Balisse | 8 | outsider (angel, extraplanar, good) | any good-aligned planes |
| Angel, Cassisian | 2 | outsider (angel, extraplanar, good)
| any good-aligned plane
|
| Angel, Choral | 6 | outsider (angel, extraplanar, good) | any good-aligned planes |
| Angel, Dapsara | 4 | outsider (angel, extraplanar, good) | any (Nirvana) |
| Angel, Empyrean | 20 | outsider (angel, extraplanar, good) | any good-aligned planes |
| Angel, Erelim | 6 | outsider (angel, extraplanar, good) | any good-aligned plane |
| Angel, Iophanite | 4 | outsider (angel, extraplanar, fire, good, lawful) | any (Heaven) |
| Angel, Kuribu | 3 | outsider (angel, extraplanar, good) | any good-aligned plane |
| Angel, Monadic Deva | 12 | outsider (angel, aquatic, extraplanar, good)
| any good-aligned plane
|
| Angel, Movanic Deva | 10 | outsider (angel, extraplanar, good)
| any good-aligned plane
|
| Angel, Ninkonda | 17 | outsider (angel, extraplanar, good, lawful) | any good-aligned plane |
| Angel, Planetar | 16 | outsider (angel, extraplanar, good) | any good-aligned plane |
| Angel, Solar | 23 | outsider (angel, extraplanar, good) | any good-aligned plane |
| Angelic Guardian | 5 | construct | any urban (Magnimar) |
| Anhana | 3 | fey | any forest |
| Animal Lord, Cat Lord | 11 | outsider (native, shapechanger) | warm jungles |
| Animate Aria | 9 | construct | any urban |
| Animate Dream | 8 | outsider (extraplanar, incorporeal)
| any (Ethereal Plane)
|
| Animate Hair | 1/2 | ooze | any urban |
| Animated Object | 3 | construct | any |
| Animated Tank | 12 | construct
| any
|
| Animus Shade, Medusa Animus Shade | 9 | undead (incorporeal) | temperate marshes and underground |
| Animus Shade, Medusa Animus Shade | 9 | undead (incorporeal) | temperate swamps or underground |
| Anisydaemon | 13 | outsider (daemon, evil, extraplanar) | any (Abaddon) |
| Ankheg | 3 | magical beast | temperate or warm plains |
| Ankhrav | 9 | magical beast | any hills, plains, or underground |
| Ankou | 14 | fey (extraplanar) | any (primal land of fey) |
| Ant Lion, Giant Adult Ant Lion | 6 | vermin | warm deserts |
| Ant Lion, Giant Ant Lion | 5 | vermin | warm deserts |
| Ant, Army Ant Swarm | 5 | vermin (swarm) | any tropical |
| Ant, Giant Ant | 2 | vermin | any |
| Ant, Knight Ant | 4 | vermin | any warm |
| Ant, Megapon Ant | 6 | vermin | warm plains |
| Aoandon | 12 | outsider (incorporeal, native) | any |
| Apallie | 2 | ooze | any temperate |
| Ape, Dire Ape (Gigantopithecus) | 3 | animal | warm forests |
| Ape, Gorilla | 2 | animal | warm forests |
| Ape, Megaprimatus | 8 | animal | warm forests, hills, or mountains |
| Aphorite | 1/2 | outsider (native) | any (Axis) |
| Apocalypse Horse | 25 | outsider (evil, extraplanar) | any (Abaddon) |
| Apostasy Wraith | 6 | undead (incorporeal) | any (Razmiran) |
| Aranea | 4 | magical beast (shapechanger)
| tropical forests
|
| Arcanaton | 9 | outsider | any |
| Archdevil, Baalzebul | 30 | outsider (devil, evil, extraplanar, lawful) | any (Hell) |
| Archdevil, Barbatos | 26 | outsider (evil, extraplanar, lawful, shapechanger) | any (Hell) |
| Archdevil, Belial | 28 | outsider (devil, evil, extraplanar, lawful, shapechanger) | any (Hell) |
| Archdevil, Dispater | 27 | outsider (devil, evil, extraplanar, lawful, shapechanger) | any (Hell) |
| Archdevil, Geryon | 29 | outsider (aquatic, devil, evil, extraplanar, lawful) | any (Hell) |
| Archdevil, Mammon | 28 | outsider (devil, evil, extraplanar, lawful) | any (Hell) |
| Archdevil, Mephistopheles | 30 | outsider (devil, evil, extraplanar, lawful) | any (Hell) |
| Archdevil, Moloch | 29 | outsider (devil, evil, extraplanar, lawful) | any (Hell) |
| Archon Swarm, Mote Archon Swarm | 15 | outsider (archon, extraplanar, good, lawful, swarm) | any (Heaven) |
| Archon, Bastion Archon | 20 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Codex Archon | 5 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Exscinder | 12 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Gate Archon | 17 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Hammer Archon | 18 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Harbinger Archon | 2 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Hound Archon | 4 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Lantern Archon | 2 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Legion Archon | 7 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Preceptor Archon | 9 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Archon, Shield Archon | 10 | outsider (archon, extraplanar, good, lawful)
| any (Heaven)
|
| Archon, Spyglass Archon | 3 | outsider (archon, extraplanar, good, lawful)
| any (Heaven)
|
| Archon, Stag Archon | 4 | outsider (archon, extraplanar, good, lawful, shapechanger) | any (Heaven) |
| Archon, Star Archon | 19 | outsider (archon, extraplanar, good, lawful)
| any (Heaven)
|
| Archon, Trumpet Archon | 14 | outsider (archon, extraplanar, good, lawful) | any (Heaven) |
| Ardoc Moilant | 10 | construct | any |
| Argent Warden | 8 | construct (extraplanar) | any (Heaven) |
| Argorth | 11 | aberration | temperate or cold mountains |
| Aridus, the Desert's Howl | 19 | outsider (air, fire, native) | — |
| Ascomoid | 5 | plant | underground |
| Ashen Forgemaster | 17 | undead (extraplanar, fire) | any land |
| Ashullian | 11 | outsider (native, water) | any water (Kaer Maga) |
| Aspidochelone | 17 | magical beast (aquatic) | ocean |
| Assassin Bug, Giant Assassin Bug | 3 | vermin | any warm |
| Assassin Bug, Great Assassin Bug | 5 | vermin | any warm |
| Assassin Vine | 3 | plant | temperate forests |
| Astomoi | 1/2 | humanoid (astomoi) | any land |
| Astral Leviathan | 18 | outsider (extraplanar) | any (Astral Plane) |
| Asura, Adhukait | 7 | outsider (asura, evil, extraplanar, lawful) | any (Hell) |
| Asura, Aghasura | 11 | outsider (asura, evil, extraplanar, lawful) | any (Hell) |
| Asura, Asurendra | 20 | outsider (asura, evil, extraplanar, lawful) | any (Hell) |
| Asura, Hishandura | 15 | outsider (asura, evil, extraplanar, lawful) | any (Hell) |
| Asura, Japalisura | 12 | outsider (asura, evil, extraplanar, lawful) | any (Hell) |
| Asura, Nikaramsa | 14 | outsider (asura, evil, extraplanar, lawful) | any (Hell) |
| Asura, Tripurasura | 2 | outsider (asura, evil, extraplanar, lawful) | any (Hell) |
| Asura, Upasunda | 9 | outsider (asura, evil, extraplanar, lawful) | any (Hell) |
| Asura, Vayuphak | 5 | outsider (asura, evil, extraplanar, lawful) | any (Hell) |
| Ataxian | 4 | outsider (chaotic, extraplanar, good) | any (Elysium) |
| Athach | 12 | humanoid (giant)
| cold or temperate hills
|
| Atomie | 1 | fey | any temperate |
| Attic Whisperer | 4 | undead
| any urban or ruins
|
| Atuikakura | 14 | magical beast (aquatic) | any oceans |
| Aurosrath | 5 | undead | any |
| Aurumvorax | 9 | magical beast
| temperate plains, hills, or forests
|
| Automaton, Champion Automaton | 10 | construct (automaton, extraplanar) | any (Axis) |
| Automaton, Familiar Automaton | 2 | construct (automaton, extraplanar) | any (Axis) |
| Automaton, Master Automaton | 20 | construct (automaton, extraplanar) | any (Axis) |
| Automaton, Sharpshooter Automaton | 15 | construct (automaton, extraplanar) | any (Axis) |
| Automaton, Stalker Automaton | 5 | construct (automaton, extraplanar) | any (Axis) |
| Avernus Razorback | 9 | outsider (evil, extraplanar, fire, lawful) | any (Hell) |
| Axe Beak | 2 | animal | temperate plains |
| Axial Monitor | 15 | outsider (extraplanar, lawful) | any urban (Axis) |
| Axiomite | 8 | outsider (extraplanar, lawful)
| any (lawful plane)
|
| Ayandamahla, the Crimson Lotus | 24 | outsider (chaotic, demon, evil, extraplanar) | — |
| Azata, Bralani | 6 | outsider (azata, chaotic, extraplanar, good, shapechanger) | any (Elysium) |
| Azata, Brijidine | 17 | outsider (azata, chaotic, earth, extraplanar, fire, good)
| any (Elysium)
|
| Azata, Gancanagh | 4 | outsider (azata, chaotic, extraplanar, good) | any (Elysium) |
| Azata, Ghaele | 13 | outsider (azata, chaotic, extraplanar, good, shapechanger) | any (Elysium) |
| Azata, Lillend | 7 | outsider (azata, chaotic, extraplanar, good) | any (Elysium) |
| Azata, Lyrakien | 2 | outsider (azata, chaotic, extraplanar, good)
| any (Elysium)
|
| Azata, Nualidu | 5 | outsider (azata, chaotic, extraplanar, good, water) | any water (Elysium) |
| Azata, Prydanu | 16 | outsider (azata, chaotic, extraplanar, good) | any (Elysium) |
| Azata, Raelis | 10 | outsider (azata, chaotic, extraplanar, good) | any (Elysium) |
| Azata, Thyrlien | 4 | outsider (azata, chaotic, extraplanar, good, shapechanger) | any (Elysium) |
| Azata, Uinuja | 15 | outsider (azata, chaotic, extraplanar, good) | any (Elysium) |
| Azata, Veranallia | 20 | outsider (azata, chaotic, extraplanar, good) | any (Elysium) |
| Azata, Yamah | 5 | outsider (azata, chaotic, extraplanar, good) | any
(Elysium) |
| Azer | 2 | outsider (extraplanar, fire)
| any land (Plane of Fire)
|
| Azgenzak | 8 | aberration (aquatic)
| warm and temperate fresh water and swamps
|
| Azi, Gandareva | 16 | dragon (aquatic) | warm aquatic |
| Azi, Sruvara | 15 | dragon | warm marshes |
| Azi, Zahhak | 19 | dragon | warm hills |
| Azlanti Chariot Beetle | 5 | vermin | any former azlanti ruin |
| Azruverda | 13 | aberration | underground |
| Baba Yaga's Rider, Black Rider | 13 | fey | any |
| Baba Yaga's Rider, Red Rider | 12 | fey | any |
| Baba Yaga's Rider, White Rider | 11 | fey | any |
| Baboon | 1/2 | animal | warm forests or plains |
| Bacallia | 1 | animal | temperate hills or mountains |
| Badger | 1/2 | animal
| temperate forests
|
| Badger, Dire Badger | 2 | animal
| temperate forests
|
| Baetriov | 8 | undead | any urban |
| Bagiennik | 6 | fey (aquatic) | cold rivers |
| Bagman | 4 | fey | any urban |
| Bakekujira | 17 | undead (aquatic) | any oceans |
| Baku | 8 | magical beast | any |
| Baku Dreamweaver | 11 | magical beast | any |
| Balravnus, Lord of the Deep Pools | 18 | outsider (aquatic, chaotic, demon, evil, extraplanar) | — |
| Bandersnatch | 17 | magical beast | any forests |
| Banelight | 12 | fey | any |
| Banshee | 13 | undead (incorporeal)
| any
|
| Baregara | 12 | outsider (chaotic, evil, extraplanar) | warm forests (Abyss) |
| Barghest | 4 | outsider (evil, extraplanar, lawful, shapechanger) | any |
| Barghest, Greater Barghest | 7 | outsider (evil, extraplanar, lawful, shapechanger) | — |
| Barometz | 15 | plant | any forests |
| Barrow Hound | 6 | fey | any (the First World) |
| Basavan | 15 | monstrous humanoid | temperate forests or mountains |
| Basidirond | 5 | plant | any non-cold underground |
| Basilisk | 5 | magical beast | any |
| Bat, Bat Swarm | 2 | animal (swarm) | any temperate or tropical |
| Bat, Dire Bat | 2 | animal | any temperate or tropical |
| Bat, Mobat | 3 | magical beast
| temperate or warm forests, hills, or underground
|
| Bat, Skaveling | 5 | undead
| any underground
|
| Bat, Sootwing Bat | 1/2 | undead | any land |
| Baykok | 9 | undead | any |
| Bear, Dire Bear (Cave Bear) | 7 | animal | cold forests |
| Bear, Dire Polar Bear | 8 | animal | cold coastlines or plains |
| Bear, Grizzly Bear | 4 | animal | cold forests |
| Bear, Polar Bear | 5 | animal | cold coastlines or plains |
| Beatific One | 9 | outsider (asura, evil) | any |
| Bebilith | 10 | outsider (chaotic, evil, extraplanar) | any (the Abyss) |
| Bee, Giant Bee | 1 | vermin
| temperate or warm plains
|
| Bee, Giant Queen Bee | 5 | vermin
| temperate or warm plains
|
| Bee-Man of Bellis | 9 | aberration | temperate forest (Andoran) |
| Beetle, Dark Spitter Beetle | 3 | vermin | any underground |
| Beetle, Fire Beetle | 1/3 | vermin | any |
| Beetle, Giant Stag Beetle | 4 | vermin | temperate forests |
| Beetle, Goliath Stag Beetle | 8 | vermin
| warm forests or plains
|
| Beetle, Juggernaut Beetle | 14 | magical beast | any underground |
| Beetle, Scarab Beetle | 6 | vermin | warm deserts (Osirion) |
| Beetle, Slicer Beetle | 4 | vermin
| temperate forests
|
| Beetle, Stalk Beetle | 2 | vermin | warm deserts (Rahadoum) |
| Beheaded | 1/3 | undead | any |
| Beheaded, Flaming Skull | 1/2 | undead | any |
| Beheaded, Giant Beheaded | 2 | undead | any |
| Beheaded, Medusa Head | 3 | undead | any |
| Beheaded, Severed Head | 1/3 | undead | any |
| Beheaded, Skull Swarm | 1 | undead (swarm) | any |
| Behemoth, Ravener | 18 | magical beast | any forest, hill, jungle, or plains |
| Behemoth, Tempest Behemoth | 22 | magical beast (air, behemoth) | any air |
| Behemoth, Thalassic Behemoth | 20 | magical beast (aquatic, behemoth, water) | any water |
| Behemoth, Thunder Behemoth | 18 | magical beast (behemoth, earth) | any land |
| Behir | 8 | magical beast | warm hills and deserts |
| Belker | 6 | outsider (air, elemental, evil)
| any (Plane of Air)
|
| Belostomatid | 3 | vermin | temperate lakes, rivers, or swamps |
| Benaioh, Benaioh (Clay Vessel) | 7 | construct | any mountains or underground |
| Benaioh, Benaioh (Ooze Form) | 7 | ooze | any mountains or underground |
| Berbalang | 6 | undead | any land |
| Bezilak, the Silken Fang | 17 | outsider (chaotic, demon, evil, extraplanar) | — |
| Bhole | 17 | magical beast | any underground |
| Bhuta | 11 | undead (incorporeal) | any aboveground natural area |
| Biloko | 1/2 | fey | warm forests |
| Birelu | 10 | outsider (extraplanar, incorporeal) | any forest, mountain, or plains |
| Bisha Ga Tsuku | 9 | outsider (cold, native) | cold hills or mountains |
| Black Jinni | 12 | outsider (chaotic, evil, extraplanar) | warm deserts |
| Black Magga | 15 | outsider (aquatic, native)
| the Storval Deep
|
| Black Pudding | 7 | ooze | any underground |
| Black Shuck | 7 | magical beast | temperate coasts or marshes |
| Blackwisp Egret | 1/3 | animal | temperate swamps |
| Blast Shadow | 5 | undead (fire) | — |
| Blight, Cave Blight | 19 | ooze (blight) | any underground |
| Blight, Desert Blight | 13 | ooze (blight) | any deserts |
| Blight, Forest Blight | 18 | ooze (blight) | any forests |
| Blight, Mountain Blight | 14 | ooze (blight) | any mountains |
| Blight, Sewer Blight | 15 | ooze (blight) | any underground (sewers) |
| Blight, Swamp Blight | 17 | ooze (aquatic, blight) | any swamps |
| Blight, Tundra Blight | 16 | ooze (blight, cold) | cold plains or glaciers |
| Blighted Fey (Satyr) | 6 | fey | temperate forests (Nirmathas) |
| Blighted Fey Satyr | 6 | fey | temperate forests |
| Blightspawn | 5 | aberration | any swamps |
| Blightspawn of Ghlaunder | 5 | aberration | — |
| Blindheim | 2 | magical beast
| any underground
|
| Blink Dog | 2 | magical beast
| temperate plains or forests
|
| Blodeuwedd | 6 | fey | temperate plains |
| Blood Algae Swarm | 8 | plant (swarm) | temperate or warm rivers |
| Blood Bramble | 10 | plant | temperate forests |
| Blood Lily | 10 | plant (aquatic) | warm coastlines or underwater |
| Blood Maize | 2 | plant | temperate or warm plains |
| Blood Queen | 23 | outsider (native) | any |
| Bloodbrush | 2 | plant | cold or temperate plains |
| Bloodhaze Mosquito Swarm | 6 | vermin (swarm) | warm forests and swamps |
| Bloodless Vessel | 12 | undead | — |
| Bloodplate Burster | 9 | plant | temperate or warm deserts or plains |
| Bloody Bones | 10 | undead | any land |
| Boar | 2 | animal | temperate or tropical forests |
| Boar, Bristle Boar | 3 | animal | any plains or hills |
| Boar, Dire Boar (Daeodon) | 4 | animal | temperate or tropical forests |
| Bodak | 8 | undead (extraplanar)
| any land (evil Outer Plane)
|
| Bodythief | 14 | plant | temperate or warm forests |
| Bodythief, Pod-Spawned Guard Captain | 8 | plant (augmented humanoid) | any |
| Bog Strider | 2 | monstrous humanoid | temperate or warm swamps |
| Bogeyman | 10 | fey | any |
| Boggard | 2 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Abyssal Warrior | 8 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Brute | 3 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Champion | 7 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Farcroaker | 3 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Hunter | 5 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Priest-King | 11 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Prophet | 5 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Savage | 4 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Scarred One | 6 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Stalker | 9 | humanoid (boggard) | temperate marshes |
| Boggard, Boggard Swampseer | 4 | humanoid (boggard) | temperate marshes |
| Boggart | 4 | fey | temperate
forests or swamps |
| Boggle | 8 | fey (shapechanger) | any land |
| Bogwid | 5 | aberration | any swamps or underground |
| Bogwiggle | 1 | aberration (aquatic) | temperate swamps |
| Boilborn | 1 | ooze | any |
| Bolla | 14 | magical beast | cold or temperate mountains |
| Bone Priest | 4 | undead | any |
| Bone Ship | 18 | undead (water) | any oceans |
| Bonestorm | 8 | undead (swarm) | any |
| Bonethorn | 12 | plant | any |
| Bonewrought Willow | 3 | plant (extraplanar) | any land (The Boneyard) |
| Bore Worm, Bore Worm Monarch | 7 | vermin | any underground |
| Bore Worm, Bore Worm Swarm | 5 | vermin (swarm) | any underground |
| Bore Worm, Empress Bore Worm | 10 | vermin | any underground |
| Boreal Creature, Boreal Annis Hag | 7 | monstrous humanoid (cold) | cold marshes |
| Boreal Creature, Boreal Manticore | 6 | magical beast (cold) | cold forests |
| Boreal Creature, Boreal Wolf | 2 | magical beast (cold) | cold forests |
| Boruta | 9 | plant | any |
| Botfly, Botfly Swarm | 4 | vermin (swarm) | warm jungles and swamps |
| Botfly, Giant Botfly | 1/3 | vermin | warm jungle |
| Brain Mole | 1 | magical beast | temperate forests, hills, or plains |
| Brain Mole, Brain Mole Monarch | 5 | magical beast | temperate forests, hills, or plains |
| Brain Ooze | 7 | ooze | any ruins or underground |
| Bramble Throne | 16 | plant | temperate forests |
| Brambleblight | 7 | plant | temperate or warm forests or underground |
| Bramblelash | 1 | plant | cold or temperate forests |
| Breathless Orchid | 2 | plant | temperate forests |
| Brethedan | 5 | aberration | any sky |
| Broken Soul, Broken Soul Lillend | 9 | outsider (azata, chaotic, extraplanar, evil) | any |
| Brownie | 1 | fey
| temperate forests or plains
|
| Bugbear | 2 | humanoid (goblinoid) | temperate mountains |
| Bugbear, Bugbear Ambusher | 10 | humanoid (goblinoid) | temperate mountains |
| Bugbear, Bugbear Bloodmage | 11 | humanoid (goblinoid) | temperate mountains |
| Bugbear, Bugbear Cultist | 7 | humanoid (goblinoid) | temperate mountains |
| Bugbear, Bugbear Flesh Glutton | 8 | humanoid (goblinoid) | temperate mountains |
| Bugbear, Bugbear Gnasher | 4 | humanoid (goblinoid) | temperate mountains |
| Bugbear, Bugbear Lurker | 8 | humanoid (goblinoid) | temperate mountains |
| Bugbear, Bugbear Shadow Sneak | 10 | humanoid (goblinoid) | temperate mountains |
| Bugbear, Bugbear Stalker | 5 | humanoid (goblinoid) | temperate mountains |
| Bugbear, Bugbear Tyrant | 13 | humanoid (goblinoid) | temperate mountains |
| Buggane | 5 | monstrous humanoid | any underground |
| Bulabar | 1 | fey | any (First World) |
| Bulette | 7 | magical beast | temperate hills |
| Bulette, Xenarth | 10 | outsider (chaotic, demon, evil, native) | — |
| Bunyip | 3 | magical beast (aquatic)
| any aquatic
|
| Buraq | 5 | magical beast | warm mountains |
| Burleev | 4 | outsider (cold or fire, extraplanar) | any (Maelstrom) |
| Burning Child | 10 | undead (fire) | temperate plains |
| Burstigeit | 3 | magical beast | any underground |
| Byakhee | 4 | aberration | any air |
| Calathgar | 4 | plant | cold forests |
| Caliban | 2 | monstrous humanoid | temperate and warm forests and marshes |
| Caligraphy Wyrm | 2 | dragon | any urban |
| Calikang | 12 | monstrous humanoid | temperate or tropical hills |
| Caller in Darkness | 9 | undead (incorporeal) | any |
| Calpina | 3 | fey | temperate forests or mountains |
| Cameroceras | 11 | animal (aquatic) | any oceans |
| Camulatz | 9 | magical beast | tropical jungles |
| Candlestone Courtier | 12 | fey | any underground (Darklands) |
| Canopy Creeper | 8 | plant | warm forests |
| Capacitor Ooze | 11 | ooze | cold deserts or plains |
| Capramace | 7 | aberration | temperate plains |
| Captain Ignisco | 6 | humanoid (munavri) | — |
| Carbuncle | 1 | magical beast | any forests or swamps |
| Carnivorous Blob | 13 | ooze
| any
|
| Carnivorous Crystal | 11 | ooze (earth, extraplanar) | any underground (Plane of Earth) |
| Carrion Creeper | 10 | plant | temperate forests or plains |
| Carrionstorm | 1 | undead (swarm)
| any near ghouls
|
| Caryatid Column | 3 | construct | any |
| Cassomir Stray | 4 | aberration | any urban |
| Cat Sith | 2 | magical beast | temperate hills |
| Cat, Cheetah | 2 | animal | warm plains |
| Cat, Leopard | 2 | animal | any forest |
| Caterpillar, Blood Caterpillar | 4 | vermin | temperate or warm forests |
| Caterpillar, Horn Caterpillar | 1 | vermin | temperate or warm forests |
| Catfolk | 1/2 | humanoid (catfolk) | any temperate or warm forest or plains, or urban |
| Catoblepas | 12 | magical beast
| any swamps
|
| Caulborn | 7 | outsider (extraplanar) | any |
| Caulborn, Caulborn Thoughtkeeper | 9 | outsider (extraplanar) | any |
| Caulborn, Chrestomath | 6 | outsider (extraplanar) | any |
| Cauldron Bloom | 15 | plant | any cold land |
| Caustic Stalker | 7 | outsider (air, elemental, extraplanar) | any underground |
| Cave Fisher | 2 | vermin | any underground |
| Cayhound | 5 | outsider | any (Elysium) |
| Caypup | 2 | outsider (native) | any land |
| Cecaelia | 5 | monstrous humanoid (aquatic) | warm water |
| Celedon | 1 | construct | any |
| Centaur | 3 | monstrous humanoid | temperate forests and plains |
| Centaur, Centaur Charger | 14 | monstrous humanoid | temperate forests and plains |
| Centaur, Centaur Forager | 6 | monstrous humanoid | temperate forests and plains |
| Centaur, Centaur Greenspeaker | 4 | monstrous humanoid | temperate forests and plains |
| Centaur, Centaur Outcast | 7 | monstrous humanoid | temperate forests and plains |
| Centianima | 4 | undead | any ruins |
| Centipede, Centipede Swarm | 4 | vermin (swarm) | temperate or warm forest or underground |
| Centipede, Giant Centipede | 1/2 | vermin | temperate or warm forest or underground |
| Centipede, Giant Whiptail Centipede | 3 | vermin
| temperate or warm forests or underground
|
| Centipede, Titan Centipede | 9 | vermin
| temperate or warm forests or underground
|
| Cephalophore | 8 | construct | any |
| Ceratioidi | 3 | monstrous humanoid (aquatic) | any saltwater |
| Cerberi | 6 | outsider (evil, extraplanar, lawful) | any (Hell) |
| Cerberus Worm | 14 | magical beast (aquatic) | any oceans |
| Cerebric Cyst | 7 | ooze | any ruins or underground |
| Cerebric Fungus | 3 | plant | any |
| Ceru | 2 | magical beast | any urban (Vudra) |
| Cervine Protector | 6 | outsider (extraplanar, good, lawful) | any (Heaven) |
| Cerynitis | 7 | magical beast | any plains, hills, or forests |
| Cetacean, Blue Whale | 12 | animal | any oceans |
| Cetacean, Blue Whale | 12 | animal | any ocean |
| Cetacean, Crimson Whale | 8 | animal | any ocean |
| Cetacean, Narwhal | 3 | animal | cold oceans |
| Cetacean, Narwhal | 3 | animal | cold oceans |
| Cetus | 13 | dragon (aquatic, water) | any oceans |
| Chained Spirit | 14 | undead (incorporeal) | any |
| Chalkost | 4 | outsider (extraplanar, good, lawful, shapechanger) | any (Heaven) |
| Changeling | 1/2 | humanoid (changeling) | any |
| Chaos Beast | 7 | outsider (chaotic, extraplanar)
| any
|
| Charau-ka | 2 | humanoid (charau-ka) | warm forests |
| Charau-ka, Deadfall Tracker | 5 | humanoid | warm forests |
| Charau-ka, Devotee of the Ravener King | 7 | humanoid (charau-ka) | warm forests |
| Charau-ka, Jungle Trickster | 8 | humanoid (charau-ka) | warm forests |
| Charau-ka, Simian Sharpshooter | 6 | humanoid (charau-ka) | warm forests |
| Charda | 7 | monstrous humanoid (aquatic)
| cold aquatic or underground
|
| Charnel Colossus | 19 | undead | any (Kalexcourt, Ustalav) |
| Charnel God | 23 | construct | any |
| Charybdis | 13 | aberration (aquatic)
| any oceans
|
| Chatterer Swarm | 8 | outsider (chaotic, evil) | The Worldwound |
| Chelarac | 8 | aberration | any underground |
| Chelarac, Chelarac Broodling | 2 | aberration | — |
| Chemosit | 4 | magical beast | warm forests |
| Cherufe | 13 | magical beast (fire) | any mountains |
| Chickcharney | 3 | magical beast | warm forests, hills, or plains |
| Child of Yog-Sothoth | 7 | aberration (augmented humanoid) | any |
| Chimara, Legendary Chimera | 13 | magical beast | — |
| Chimera | 7 | magical beast | temperate hills |
| Chitikin | 4 | vermin | temperate or warm forests or underground |
| Choker | 2 | aberration | any underground |
| Choking Shade | 5 | undead (incorporeal) | any |
| Chon Chon | 1/2 | aberration | temperate or tropical forests or ruins |
| Chon Chon, Chon Chon Swarm | 3 | aberration (swarm) | temperate or tropical forests or ruins |
| Choxani | 3 | fey | any (First World) |
| Chronogeist | 14 | undead (incorporeal) | Crystilan (Xin-Edasseril) |
| Chupacabra | 3 | magical beast
| warm hills or plains
|
| Chuspiki | 2 | magical beast (air) | warm hills or mountains |
| Chuul | 7 | aberration (aquatic) | temperate swamps |
| Chuul, Chuul, Lesser | 4 | aberration (aquatic) | — |
| Chuul, Larval Chuul | 1 | aberration (aquatic) | — |
| Chyzaedu | 10 | aberration | any |
| Cicada, Cicada Swarm | 2 | vermin (swarm) | temperate forests |
| Cicada, Giant Cicada | 1 | vermin | any temperate or tropical land |
| Cinder Wolf | 2 | magical beast | temperate or warm deserts |
| Cinderghost | 7 | undead (extraplanar, fire, incorporeal) | any plains (Plane of Fire) |
| Cipactli | 21 | magical beast (aquatic) | any water |
| Clawbat | 1 | magical beast | temperate hills and ruins |
| Cloaker | 5 | aberration | underground |
| Clockwork, Clockwork Angel | 15 | construct (clockwork) | any |
| Clockwork, Clockwork Assassin | 13 | construct (clockwork) | any |
| Clockwork, Clockwork Dragon | 16 | construct (clockwork) | any land |
| Clockwork, Clockwork Excavator | 10 | construct (clockwork) | any land |
| Clockwork, Clockwork Familiar | 2 | construct (clockwork) | any |
| Clockwork, Clockwork Fiend | 17 | construct (clockwork) | any |
| Clockwork, Clockwork Goblin | 3 | construct (clockwork) | any |
| Clockwork, Clockwork Goliath | 19 | construct (clockwork) | any |
| Clockwork, Clockwork Guardian | 8 | construct (clockwork) | any |
| Clockwork, Clockwork Gunslinger | 7 | construct (clockwork) | any |
| Clockwork, Clockwork Hound | |