Habitat (5e)/Swamp
From Dungeons and Dragons Wiki
5th edition Varied
See Sources and Notes
Swamp Habitat includes mangrove swampss, bogs, fens, marshes, moors, etc.
Swamp Creatures[edit]
(235 official and unofficial monsters)
| Name | Habitat | Type | Subtype | Size | HP | CR | XP | Alignment | Source |
|---|---|---|---|---|---|---|---|---|---|
| Skulk | Coastal, Forest, Shadowfell, Swamp, Underdark, Underground, Urban | Humanoid | Medium | 18 | 1/2 | 100 | Chaotic Neutral | Mordenkainen's Tome of Foes | |
| Swarm of Insects | Desert, Forest, Grassland, Hill, Swamp, Underdark, Underground, Urban | Swarm | Insect, Beast | Medium | 22 | 1/2 | 100 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Enkki Sorcerer | Arctic, Coastal, Desert, Feywild, Forest, Grassland, Hill, Mountain, Shadowfell, Swamp, Underdark, Underground | Fey | Enkki | Small | 31 | 6 | 2,300 | Chaotic Neutral | Rlyehable |
| Vegepygmy Common | Forest, Swamp, Underground | Plant | Fungus, Vegepygmy | Small | 9 | 1/4 | 50 | Neutral | Volo's Guide to Monsters |
| Warlock of the Archfey | Arctic, Forest, Mountain, Swamp, Urban | Humanoid | any race | Medium | 49 | 4 | 1,100 | any alignment | Volo's Guide to Monsters |
| Giant Ant Queen | Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Beast | Ant, Giant Ant | Large | 85 | 4 | 1,100 | Unaligned | "Varied" |
| Lizardfolk Subchief | Forest, Swamp | Humanoid | Lizardfolk, Lizardfolk Subchief | Medium | 52 | 3 | 700 | Neutral | Ghosts of Saltmarsh |
| Allip | Swamp, Urban | Undead | Medium | 40 | 5 | 1,800 | Neutral Evil | Varied | |
| Young Black Dragon | Swamp | Dragon | Chromatic Dragon, Black Dragon | Large | 127 | 7 | 2,900 | Chaotic Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Buckawn | Feywild, Forest, Swamp | Fey | Brownie | Small | 3 | 1/8 | 25 | Neutral | Rlyehable |
| Vyth | Forest, Swamp | Humanoid | Lizardfolk, Lizardfolk Scaleshield | Medium | 32 | 1 | 200 | Neutral | Ghosts of Saltmarsh |
| Kobold Alchemist | Coastal, Desert, Forest, Hill, Mountain, Swamp, Underdark, Underground, Urban | Humanoid | Kobold | Small | 44 | 2 | 450 | Lawful Neutral | "Varied" |
| Rat | Swamp, Underground, Urban | Beast | Rat | Tiny | 1 | 0 | 10 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Ancient Topaz Dragon | Coastal, Swamp | Dragon | Gem Dragon, Topaz Dragon | Gargantuan | 280 | 20 | 25,000 | Chaotic Neutral | Fizban's Treasury of Dragons |
| Bavlorna Blightstraw | Feywild, Forest, Swamp, Urban | Fey | Hag | Medium | 110 | 7 | 2,900 | Neutral Evil | The Wild Beyond the Witchlight |
| Oblex Spawn | Swamp, Underdark, Underground, Urban | Ooze | Oblex | Tiny | 18 | 1/4 | 50 | Lawful Evil | Mordenkainen's Tome of Foes |
| Poisonous Snake | Coastal, Desert, Forest, Grassland, Hill, Swamp | Beast | Snake | Tiny | 2 | 1/8 | 25 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Young Vicious Drake | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Dragon | Drake, Vicious Drake | Large | 152 | 9 | 5,000 | Chaotic Neutral | Rlyehable |
| Froghemoth | Swamp, Underdark | Overview | Monstrosity, Froghemoth | Volo's Guide to Monsters | |||||
| Thorny | Forest, Swamp, Underground | Plant | Vegepygmy, Thorny | Medium | 27 | 1 | 200 | Neutral | VGtM, MotM |
| Will-o'-Wisp | Forest, Swamp, Urban | Undead | Tiny | 22 | 2 | 450 | Chaotic Evil | SRD-CC v5.1, SRD-OGL v5.1 | |
| Lizardfolk Commoner | Forest, Swamp | Humanoid | Lizardfolk | Medium | 16 | 1/4 | 50 | Neutral | Ghosts of Saltmarsh |
| Drizlash Ghast | Shadowfell, Swamp, Underdark, Underground, Urban | Undead | Ghoul, Ghast | Medium | 36 | 2 | 450 | Chaotic Evil | CoS, SRD5 |
| Crocodile | Swamp, Urban, Coastal | Beast | Crocodile | Large | 19 | 1/2 | 100 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Bal-Oon | Coastal, Desert, Forest, Swamp | Monstrosity | Small | 7 | 1/4 | 50 | Unaligned | Rlyehable | |
| Gulpa'Gor | Swamp | Humanoid | Bullywug, Bullywug Royal | Medium | 52 | 3 | 700 | Neutral Evil | Ghosts of Saltmarsh |
| Brackish Trudge | Swamp | Plant | Fungus | Large | 68 | 3 | 700 | Unaligned | Strixhaven |
| Giant Lizard | Coastal, Desert, Forest, Swamp, Underdark, Underground | Beast | Lizard | Large | 19 | 1/4 | 50 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Black Dragon | Swamp | Overview | Dragon, Chromatic Dragon, Black Dragon | Varied | |||||
| Giant Snail | Forest, Grassland, Swamp | Beast | Snail | Large | 22 | 1/4 | 50 | Unaligned | The Wild Beyond the Witchlight |
| Dumphrey Frogart | Feywild, Swamp | Humanoid | Bullywug, Bullywug Knight | Medium | 66 | 3 | 700 | Lawful Good | The Wild Beyond the Witchlight |
| Star Spawn Hulk | Mountain, Swamp, Urban | Aberration | Star Spawn | Large | 16 | 10 | 5,900 | Chaotic Evil | Mordenkainen's Tome of Foes |
| Tribal Warrior | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Any Race | Medium | 11 | 1/8 | 25 | Any Alignment | SRD-CC v5.1, SRD-OGL v5.1 |
| Kobold | Coastal, Desert, Forest, Hill, Mountain, Swamp, Underdark, Underground, Urban | Overview | Humanoid, Kobold | SRD5, MM5, MotM, VGtM | |||||
| Froghemoth Adult | Swamp, Underdark | Monstrosity | Froghemoth | Huge | 10 | 5,900 | Unaligned | VGtM, MotM | |
| Yuan-ti Malison (5e)/Type 3 | Desert, Forest, Swamp | Monstrosity | Shapechanger, Yuan-ti | Medium | 66 | 3 | 700 | Neutral Evil | Monster Manual (5e) |
| Orc Nurtured One of Yurtrus | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Orc | Medium | 30 | 1/2 | 100 | Chaotic Evil | Volo's Guide to Monsters |
| Dimetrodon | Coastal, Swamp | Beast | Dinosaur | Medium | 19 | 1/4 | 50 | Unaligned | Varied, VGtM, MotM |
| Orc | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Orc | Medium | 15 | 1/2 | 100 | Chaotic Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Crag Cat | Arctic, Coastal, Desert, Grassland, Hill, Mountain, Swamp | Beast | Large | 34 | 1 | 200 | Unaligned | Storm King's Thunder | |
| Flying Monkey | Feywild, Forest, Shadowfell, Swamp | Beast | Monkey, Flying Monkey | Small | 3 | 0 | 10 | Unaligned | Tomb of Annihilation |
| Maurezhi | Swamp, Urban | Fiend | Demon | Medium | 88 | 7 | 2,900 | Chaotic Evil | Monsters of the Multiverse |
| Revenant (5e)/Monster | Arctic, Desert, Forest, Hill, Swamp, Urban | Undead | Revenant | Medium | 136 | 5 | 1,800 | Neutral | Monster Manual (5e) |
| Ambush Drake | Forest, Hill, Mountain, Swamp, Underground, Urban | Dragon | Drake | Medium | 22 | 1/2 | 100 | Unaligned | Hoard of the Dragon Queen |
| Skull Lord | Desert, Shadowfell, Swamp | Undead | Medium | 105 | 15 | 13,000 | Lawful Evil | Mordenkainen's Tome of Foes | |
| Swarm of Beetles | Desert, Forest, Grassland, Hill, Swamp, Underdark, Underground, Urban | Swarm | Beast, Insect, Beetle | Medium | 22 | 1/2 | 100 | Unaligned | SRD5, MM5 |
| Giant Fly | Urban, Grassland, Swamp | Beast | Insect | Large | 19 | 0 | 0 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Vegepygmy | Forest, Swamp, Underground | Overview | Plant, Fungus, Vegepygmy | VGtM, MotM, QftIS | |||||
| Wastrilith | Coastal, Swamp, Underdark, Underground, Underwater | Fiend | Demon | Large | 157 | 13 | 10,000 | Chaotic Evil | Monsters of the Multiverse |
| Giant Ant Soldier | Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Beast | Ant, Giant Ant | Large | 73 | 3 | 700 | Unaligned | Rlyehable |
| Mist Walker | Feywild, Forest, Swamp, Grassland | Fey | Giant | Large | 110 | 6 | 2,300 | Chaotic Neutral | Rlyehable |
| Archdruid VGtM | Forest, Mountain, Swamp, Underwater | Humanoid | Any Race | Medium | 132 | 12 | 8,400 | Any Alignment | Volo's Guide to Monsters |
| Druid | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Any Race, Druid | Medium | 27 | 2 | 450 | Any Alignment | SRD-CC v5.1, SRD-OGL v5.1 |
| Bullywug Croaker | Swamp | Humanoid | Bullywug, Bullywug Croaker | Medium | 33 | 2 | 450 | Neutral Evil | Ghosts of Saltmarsh |
| Ihrtos | Forest, Swamp | Humanoid | Lizardfolk, Lizardfolk Subchief | Medium | 52 | 3 | 700 | Neutral | Ghosts of Saltmarsh |
| Kobold Chieftain | Coastal, Desert, Forest, Hill, Mountain, Swamp, Underdark, Urban, Underground | Humanoid | Kobold | Small | 82 | 4 | 1,100 | Lawful Evil | "Varied" |
| Swarm of Rats | Swamp, Underground, Urban | Swarm | Rat, Beast | Medium | 24 | 1/4 | 50 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Topaz Dragon Wyrmling | Coastal, Swamp | Dragon | Gem Dragon, Topaz Dragon | Medium | 33 | 2 | 450 | Chaotic Neutral | Fizban's Treasury of Dragons |
| Endelyn Moongrave | Feywild, Forest, Swamp, Urban | Fey | Hag | Medium | 114 | 6 | 2,300 | Neutral Evil | The Wild Beyond the Witchlight |
| Redcap | Forest, Hill, Swamp | Fey | Small | 45 | 3 | 700 | Chaotic Evil | Volo's Guide to Monsters | |
| Giant Poisonous Snake | Desert, Forest, Grassland, Swamp, Underdark, Underground, Urban | Beast | Snake | Medium | 11 | 1/4 | 50 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Vicious Drake Wyrmling | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Dragon | Drake, Vicious Drake | Medium | 52 | 3 | 700 | Chaotic Neutral | Rlyehable |
| Froghemouth Elder | Swamp, Underdark | Monstrosity | Froghemoth | Huge | 207 | 15 | 13,000 | Unaligned | Quests from the Infinite Staircase |
| Vampiric Mist | Arctic, Coastal, Forest, Grassland, Mountain, Swamp, Underdark, Underground, Urban | Undead | Medium | 30 | 3 | 700 | Chaotic Evil | Mordenkainen's Tome of Foes | |
| Amphisbaena | Desert, Grassland, Swamp | Monstrosity | Medium | 11 | 1/2 | 100 | Unaligned | Varied, GoS, MOoT | |
| Lizardfolk King/Queen | Forest, Swamp | Humanoid | Lizardfolk, Lizardfolk King/Queen | Medium | 78 | 4 | 1,100 | Chaotic Evil | Monster Manual (5e) |
| Giant Crocodile | Swamp | Beast | Crocodile | Huge | 85 | 4 | 1,100 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Fae Badger | Coastal, Feywild, Forest, Grassland, Swamp | Beast | Badger, Fey, Fae Beast | Tiny | 3 | 0 | 10 | Unaligned | Rlyehable |
| Arrp | Swamp | Humanoid | Bullywug, Bullywug Croaker | Medium | 33 | 2 | 450 | Neutral Evil | Ghosts of Saltmarsh |
| Guard Drake Common | Arctic, Desert, Forest, Mountain, Swamp, Underdark, Urban | Dragon | Drake, Guard Drake | Medium | 52 | 2 | 450 | Unaligned | HotDQ, VGtM, MotM |
| Lizardfolk | Forest, Swamp | Humanoid | Lizardfolk | Medium | 22 | 1/2 | 100 | Neutral | SRD-CC v5.1, SRD-OGL v5.1 |
| Black Dragon Wyrmling | Swamp | Dragon | Chromatic Dragon, Black Dragon | Medium | 33 | 2 | 450 | Chaotic Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Swarm of Wasps | Desert, Forest, Grassland, Hill, Swamp, Underdark, Underground, Urban | Swarm | Beast, Insect, Wasp | Medium | 22 | 1/2 | 100 | Unaligned | SRD5, MM5 |
| Horrid Plant | Forest, Swamp | Overview | Plant, Horrid Plant | Quests from the Infinite Staircase | |||||
| Star Spawn Seer | Mountain, Swamp, Urban | Aberration | Star Spawn | Medium | 153 | 13 | 10,000 | Neutral Evil | Mordenkainen's Tome of Foes |
| Revenant | Arctic, Desert, Forest, Hill, Swamp, Urban | Overview | Undead, Revenant | Monster Manual (5e) | |||||
| Ktip | Feywild, Forest, Grassland, Hill, Swamp | Fey | Tiny | 3 | 1/8 | 25 | Chaotic Neutral | Rlyehable | |
| Psycada | Feywild, Forest, Shadowfell, Swamp, Underdark | Overview | Monstrosity, Insect, Psycada | Rlyehable | |||||
| Yuan-ti Malison (5e)/Type 4 | Desert, Forest, Swamp | Monstrosity | Shapechanger, Yuan-ti | Medium | 66 | 3 | 700 | Neutral Evil | Volo's Guide to Monsters |
| Orc Red Fang of Shargaas | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Orc | Medium | 52 | 3 | 700 | Chaotic Evil | Volo's Guide to Monsters |
| Elder Oblex | Swamp, Underdark, Urban | Ooze | Oblex | Huge | 115 | 10 | 5,900 | Lawful Evil | Mordenkainen's Tome of Foes |
| Ghast | Shadowfell, Swamp, Underdark, Underground, Urban | Undead | Ghoul, Ghast | Medium | 36 | 2 | 450 | Chaotic Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Centipede | Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground, Urban | Beast | Insect, Centipede | Tiny | 2 | 0 | 10 | Unaligned | Rlyehable |
| Amidor | Forest, Grassland, Hill, Swamp | Plant | Dandelion | Small | 38 | 1/2 | 100 | Neutral Good | The Wild Beyond the Witchlight |
| Meazel | Desert, Forest, Grassland, Hill, Mountain, Shadowfell, Swamp, Underdark, Underground, Urban | Humanoid | Medium | 35 | 1 | 200 | Neutral Evil | Mordenkainen's Tome of Foes | |
| Scout | Desert, Arctic, Coastal, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Any Race, Scout | Medium | 9 | 1/2 | 100 | Any Alignment | SRD-CC v5.1, SRD-OGL v5.1 |
| Guard Drake | Arctic, Desert, Forest, Mountain, Swamp, Underdark, Underground, Urban | Overview | Dragon, Drake, Guard Drake | VGtM, MotM | |||||
| Spirit Troll | Forest, Underdark, Underground, Arctic, Hill, Mountain, Swamp | Giant | Troll | Large | 97 | 11 | 7,200 | Chaotic Evil | Mordenkainen's Tome of Foes |
| Swarm of Centipedes | Desert, Forest, Grassland, Hill, Swamp, Underdark, Underground, Urban | Swarm | Beast, Insect, Centipede | Medium | 22 | 1/2 | 100 | Unaligned | SRD5, MM5 |
| Frog | Coastal, Forest, Swamp | Beast | Frog | Tiny | 1 | 0 | 0 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Vegepygmy Scavenger | Forest, Swamp, Underground | Plant | Fungus, Vegepygmy | Small | 13 | 1/4 | 50 | Neutral | Quests from the Infinite Staircase |
| Wretched Sorrowsworn | Swamp, Underdark, Underground, Urban, Shadowfell | Monstrosity | Sorrowsworn | Small | 10 | 1/4 | 50 | Neutral Evil | Mordenkainen's Tome of Foes |
| Burnished Hart | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Construct | Anvilwrought | Medium | 45 | 2 | 450 | Unaligned | Mythic Odysseys of Theros |
| Oblex | Swamp, Underdark, Urban | Overview | Ooze, Oblex | Mordenkainen's Tome of Foes | |||||
| Archdruid MotM | Forest, Mountain, Swamp, Underwater | Humanoid | Any Race, Druid | Medium | 154 | 12 | 8,400 | Any Alignment | Monsters of the Multiverse |
| Water Elemental | Coastal, Swamp, Underwater | Elemental | Water Elemental | Large | 114 | 5 | 1,800 | Neutral | SRD-CC v5.1, SRD-OGL v5.1 |
| Bullywug Knight | Swamp | Humanoid | Bullywug, Bullywug Knight | Medium | 66 | 3 | 700 | Lawful Good | The Wild Beyond the Witchlight |
| Thousand Teeth | Swamp | Monstrosity | Crocodile, Legendary Crocodile | Large | 93 | 6 | 2,300 | Neutral Evil | Ghosts of Saltmarsh |
| Kobold Dragon-Blessed | Coastal, Desert, Forest, Hill, Mountain, Swamp, Underdark, Underground, Urban | Humanoid | Kobold | Small | 9 | 1/2 | 100 | Lawful Evil | Rlyehable |
| Giant Rat | Forest, Swamp, Underdark, Underground, Urban | Beast | Rat, Giant Rat | Small | 7 | 1/8 | 25 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Young Topaz Dragon | Coastal, Swamp | Dragon | Gem Dragon, Topaz Dragon | Large | 127 | 7 | 2,900 | Chaotic Neutral | Fizban's Treasury of Dragons |
| Skabatha Nightshade | Feywild, Forest, Swamp, Urban | Fey | Hag | Medium | 150 | 8, 6 | 3,900, 2,300 | Neutral Evil | The Wild Beyond the Witchlight |
| Rot Troll | Forest, Underdark, Underground, Arctic, Desert, Hill, Mountain, Shadowfell, Swamp | Giant | Troll | Large | 138 | 9 | 5,000 | Chaotic Evil | Mordenkainen's Tome of Foes |
| Spider | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground, Urban | Beast | Spider | Tiny | 1 | 0 | 10 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Empyrean | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Celestial | Titan | Huge | 313 | 23 | 50,000 | Varied | Monster Manual (5e) |
| Froghemoth Juvenile | Swamp, Underdark | Monstrosity | Froghemoth | Large | 64 | 6 | 2,300 | Unaligned | Rlyehable |
| Vargouille | Desert, Swamp, Underdark, Underground | Fiend | Tiny | 13 | 1 | 200 | Chaotic Evil | Volo's Guide to Monsters | |
| Deva | Arctic, Coastal, Desert, Feywild, Forest, Grassland, Hill, Mountain, Shadowfell, Swamp, Underground, Underwater | Celestial | Angel | Medium | 136 | 10 | 5,900 | Lawful Good | SRD-CC v5.1, SRD-OGL v5.1 |
| Lizardfolk Liberator | Forest, Swamp | Humanoid | Lizardfolk | Medium | 105 | 5 | 1,800 | Neutral | Rlyehable |
| Legendary Crocodile | Swamp | Monstrosity | Crocodile, Legendary Crocodile | Large | 93 | 6 | 2,300 | Neutral Evil | Ghosts of Saltmarsh |
| Fae Rat | Feywild, Swamp, Underground, Urban | Beast | Fey, Rat, Fae Beast | Tiny | 1 | 0 | 10 | Unaligned | Rlyehable |
| Sauriv | Coastal, Forest, Swamp, Urban | Humanoid | Lizardfolk | Medium | 9 | 1/8 | 25 | Lawful Neutral | GOS, SRD5 |
| Black Guard Drake | Swamp, Urban | Dragon | Drake, Guard Drake | Medium | 52 | 2 | 450 | Unaligned | VGtM, MotM |
| Lizardfolk Shaman | Forest, Swamp | Humanoid | Lizardfolk, Druid | Medium | 27 | 2 | 450 | Neutral | Monster Manual (5e) |
| Gem Greatwyrm | Arctic, Coastal, Desert, Feywild, Forest, Grassland, Hill, Mountain, Shadowfell, Swamp, Underdark, Underground, Underwater | Dragon | Gem Dragon | Gargantuan | 507 | 26 | 90,000 | Neutral | Fizban's Treasury of Dragons |
| Bauble | Feywild, Forest, Swamp, Underdark, Urban | Fey | Darkling | Small | 13 | 1/2 | 100 | Chaotic Neutral | The Wild Beyond the Witchlight |
| Shambling Mound | Forest, Swamp | Plant | Large | 136 | 6 | 2,300 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 | |
| Vicious Drake | Arctic, Coastal, Desert, Feywild, Forest, Grassland, Hill, Mountain, Shadowfell, Swamp, Underdark, Underground | Overview | Dragon, Drake, Vicious Drake | Rlyehable | |||||
| Dew Drinker | Forest, Swamp | Plant | Horrid Plant | Large | 42 | 4 | 1,100 | Unaligned | Quests from the Infinite Staircase |
| Swarm of Rot Grubs | Swamp, Underdark, Underground | Swarm | Beast | Medium | 22 | 1/2 | 100 | Unaligned | Volo's Guide to Monsters |
| Spider | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground, Urban | Overview | Beast, Spider | Varied | |||||
| Monkey | Forest, Swamp | Overview | Beast, Monkey | Varied | |||||
| Swamp Spirit | Feywild, Swamp | Fey | Small | 27 | 1/4 | 50 | Neutral Evil | Journeys through the Radiant Citadel | |
| Yuan-ti Malison (5e)/Type 5 | Desert, Forest, Swamp | Monstrosity | Shapechanger, Yuan-ti | Medium | 66 | 3 | 700 | Neutral Evil | Volo's Guide to Monsters |
| Assassin Vine | Forest, Swamp | Plant | Assassin Vine | Large | 85 | 3 | 700 | Unaligned | Ghosts of Saltmarsh |
| Orc War Chief | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Orc | Medium | 93 | 4 | 1,100 | Chaotic Evil | Monster Manual (5e) |
| Flail Snail | Forest, Swamp, Underdark | Elemental | Earth Elemental | Large | 52 | 3 | 700 | Unaligned | Varied, VGtM, MotM |
| Ghoul | Shadowfell, Swamp, Underdark, Underground, Urban | Undead | Ghoul | Medium | 22 | 1 | 200 | Chaotic Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Dread Centipede | Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Beast | Centipede | Large | 124 | 8 | 3,900 | Unaligned | Rlyehable |
| Awakened Toadstool | Forest, Grassland, Swamp, Feywild | Plant | Awakened Plant | Tiny | 1 | 0 | 0 | Unaligned | The Wild Beyond the Witchlight |
| Meenlock | Feywild, Forest, Swamp, Urban | Fey | Small | 31 | 2 | 450 | Neutral Evil | Volo's Guide to Monsters | |
| Lesser Star Spawn Emissary | Mountain, Shadowfell, Swamp, Urban | Aberration | Star Spawn | Medium | 241 | 19 | 22,000 | Van Richten's Guide to Ravenloft | |
| Swarm of Spiders | Desert, Forest, Grassland, Hill, Swamp, Underdark, Underground, Urban | Swarm | Beast, Insect, Spider | Medium | 22 | 1/2 | 100 | Unaligned | SRD5, MM5 |
| Heavenly Sovereign Green Hag | Feywild, Forest, Hill, Swamp, Wildes | Fey | Hag | Medium | 229 | 11 | 7,200 | Neutral Evil | Venture Maidens Campaign Guide |
| Thorny Hunter | Forest, Swamp, Underdark, Underground | Plant | Vegepygmy, Thorny | Medium | 27 | 2 | 450 | Neutral | Quests from the Infinite Staircase |
| Yuan-ti Abomination | Desert, Forest, Swamp | Monstrosity | Shapechanger, Yuan-ti | Large | 127 | 7 | 2,900 | Neutral Evil | Monster Manual (5e) |
| Anvilwrought Raptor | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground, Underwater, Urban | Construct | Anvilwrought | Tiny | 18 | 1/2 | 100 | Unaligned | Mythic Odysseys of Theros |
| Orc Blade of Ilneval | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Orc | Medium | 60 | 4 | 1,100 | Chaotic Evil | Volo's Guide to Monsters |
| Corpse Flower | Forest, Swamp, Urban | Plant | Large | 127 | 8 | 3,900 | Chaotic Evil | MToF, MotM, Varied | |
| Giant Frog | Forest, Swamp | Beast | Frog | Medium | 18 | 1/4 | 50 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Bullywug Royal | Swamp | Overview | Humanoid, Bullywug, Bullywug Royal | TWBtW, GoS | |||||
| Krell Grohlg | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Half-Orc, Druid | Medium | 27 | 2, 1/8 | 450, 25 | Chaotic Evil | Varied |
| Kobold Trapsmith | Coastal, Desert, Forest, Hill, Mountain, Swamp, Underdark, Underground, Urban | Humanoid | Kobold | Small | 36 | 1 | 200 | Lawful Neutral | "Varied" |
| Diseased Giant Rat | Forest, Swamp, Underdark, Underground, Urban | Beast | Rat, Giant Rat | Small | 7 | 1/8 | 25 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Dragonnel | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground, Urban | Overview | Dragon, Dragonnel | FToD, DLSotDQ, Varied | |||||
| Bloody Toes | Forest, Hill, Swamp | Fey | Redcap | Small | 45 | 3 | 700 | Chaotic Evil | The Wild Beyond the Witchlight |
| Shadow Mastiff | Forest, Hill, Shadowfell, Swamp | Monstrosity | Shadow Mastiff | Medium | 33 | 2 | 450 | Neutral Evil | Volo's Guide to Monsters |
| Giant Spider | Desert, Forest, Swamp, Underdark, Underground, Urban | Beast | Spider | Large | 26 | 1 | 200 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Enkki | Arctic, Coastal, Desert, Feywild, Forest, Grassland, Hill, Mountain, Shadowfell, Swamp, Underdark, Underground | Overview | Fey, Enkki | Rlyehable | |||||
| Vegepygmy Moldmaker | Forest, Swamp, Underground | Plant | Fungus, Vegepygmy | Small | 44 | 3 | 700 | Neutral | Quests from the Infinite Staircase |
| Vegepygmy Chief | Underground, Forest, Swamp | Plant | Vegepygmy, Fungus | Small | 33 | 2 | 450 | Neutral | Volo's Guide to Monsters |
| Anhkolox | Arctic, Coastal, Forest, Grassland, Hill, Mountain, Swamp | Undead | Huge | 157 | 9 | 5,000 | Neutral Evil | Dragonlance Shadow of the Dragon Queen | |
| Lizardfolk Render | Forest, Swamp | Humanoid | Lizardfolk | Large | 52 | 3 | 700 | Neutral | Ghosts of Saltmarsh |
| Adult Black Dragon | Swamp | Dragon | Chromatic Dragon, Black Dragon | Huge | 195 | 14 | 11,500 | Chaotic Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Boggart | Feywild, Forest, Grassland, Swamp | Fey | Shapechanger | Small | 21 | 1 | 200 | Chaotic Neutral | Rlyehable |
| Othokent | Forest, Swamp | Humanoid | Lizardfolk, Lizardfolk King/Queen | Medium | 78 | 4 | 1,100 | Lawful Neutral | GoS, MM5 |
| Hadrosaurus | Grassland, Swamp | Beast | Dinosaur | Large | 19 | 1/4 | 50 | Unaligned | Varied, VGtM, MotM |
| Mud Mephit | Swamp | Elemental | Mephit | Small | 27 | 1/4 | 50 | Neutral Evil | Monster Manual (5e) |
| Topaz Dragon | Coastal, Swamp | Overview | Dragon, Gem Dragon, Topaz Dragon | Fizban's Treasury of Dragons | |||||
| Trinket Darkling | Feywild, Forest, Swamp, Underdark, Urban | Fey | Darkling | Small | 13 | 1/2 | 100 | Chaotic Neutral | The Wild Beyond the Witchlight |
| Constrictor Snake | Desert, Forest, Swamp, Underwater | Beast | Snake | Large | 13 | 1/4 | 50 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Adult Vicious Drake | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Dragon | Drake, Vicious Drake | Huge | 225 | 15 | 13,000 | Chaotic Neutral | Rlyehable |
| Purple Blossom | Forest, Swamp | Plant | Horrid Plant | Large | 42 | 4 | 1,100 | Unaligned | Quests from the Infinite Staircase |
| Sword Wraith Commander | Grassland, Swamp | Undead | Sword Wraith | Medium | 127 | 8 | 3,900 | Lawful Evil | Mordenkainen's Tome of Foes |
| Lizardfolk | Forest, Swamp | Overview | Humanoid, Lizardfolk | SRD5, MM5, MotM, VGtM | |||||
| Monkey | Forest, Swamp | Beast | Monkey | Small | 2 | 1/8 | 25 | Unaligned | Rlyehable |
| Four-Armed Troll | Arctic, Forest, Hill, Mountain, Swamp, Underdark, Underground | Giant | Troll, Four-Armed Troll | Large | 84 | 6 | 2,300 | Chaotic Evil | Hoard of the Dragon Queen |
| Yuan-ti Pureblood | Desert, Forest, Swamp, Urban | Humanoid | Yuan-ti | Medium | 40 | 1 | 200 | Neutral Evil | Monster Manual (5e) |
| Jade Assassin Vine | Forest, Swamp | Plant | Assassin Vine | Large | 30 | 2 | 450 | Neutral | Rlyehable |
| Pest Mascot | Swamp, Urban | Monstrosity | Tiny | 22 | 1/4 | 50 | Unaligned | Strixhaven | |
| Groff | Swamp | Plant | Large | 68 | 4 | 1,100 | Unaligned | Strixhaven | |
| Green Hag | Forest, Hill, Swamp, Feywild | Fey | Hag, Green Hag | Medium | 82 | 3 | 700 | Neutral Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Decapus | Forest, Swamp | Monstrosity | Decapus | Large | 75 | 4 | 1,100 | Unaligned | Tortle Package |
| Butterfly | Forest, Grassland, Hill, Swamp | Beast | Insect, Butterfly | Tiny | 1 | 0 | 10 | Unaligned | The Wild Beyond the Witchlight |
| Nagpa | Coastal, Desert, Forest, Swamp, Urban | Humanoid | Nagpa | Medium | 187 | 17 | 18,000 | Neutral Evil | Mordenkainen's Tome of Foes |
| Greater Star Spawn Emissary | Mountain, Shadowfell, Swamp, Urban | Aberration | Star Spawn | Huge | 289 | 21 | 33,000 | Van Richten's Guide to Ravenloft | |
| Swarm of Poisonous Snakes | Forest, Swamp | Swarm | Snake, Beast | Medium | 36 | 2 | 450 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Killmoulis | Arctic, Coastal, Desert, Feywild, Forest, Grassland, Hill, Mountain, Swamp, Underground, Urban | Fey | Tiny | 7 | 0 | 10 | Neutral | Mordenkainen's Fiendish Folio Volume 1 | |
| Wolf-in-Sheep's-Clothing | Forest, Swamp | Plant | Medium | 112 | 7 | 2,900 | Unaligned | Quests from the Infinite Staircase | |
| Yuan-ti Malison (5e)/Type 1 | Desert, Forest, Swamp | Monstrosity | Shapechanger, Yuan-ti | Medium | 66 | 3 | 700 | Neutral Evil | Monster Manual (5e) |
| Aranea | Forest, Swamp, Underground | Monstrosity | Shapechanger | Medium | 32 | 2 | 450 | Neutral Evil | Rlyehable |
| Orc Claw of Luthic | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Orc | Medium | 45 | 2 | 450 | Chaotic Evil | Volo's Guide to Monsters |
| Darkling | Forest, Swamp, Underdark, Urban, Feywild | Fey | Darkling | Small | 13 | 1/2 | 100 | Chaotic Neutral | VGtM, MotM, varied, TWBtW |
| Wight | Desert, Swamp, Underdark, Underground, Urban | Undead | Wight | Medium | 45 | 3 | 700 | Neutral Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Bullywug Royal (5e)/Downfall | Feywild, Swamp | Humanoid | Bullywug, Bullywug Royal | Medium | 65 | 3 | 700 | Any Alignment | The Wild Beyond the Witchlight |
| Vortanim | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Human, Druid | Medium | 27 | 2 | 450 | Neutral Good | GoS, SRD5 |
| Winged Kobold | Coastal, Desert, Forest, Hill, Mountain, Swamp, Underdark, Underground, Urban | Humanoid | Kobold | Small | 7 | 1/4 | 50 | Lawful Evil | Monster Manual (5e) |
| Raven | Hill, Swamp, Urban | Beast | Raven | Tiny | 1 | 0 | 10 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Dragonnel Common | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground, Urban | Dragon | Dragonnel | Large | 58 | 2 | 450 | Neutral | Fizban's Treasury of Dragons |
| Zennor | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Orc | Medium | 15 | 1/2 | 100 | Chaotic Good | TWBtW, SRD5 |
| Shadow Mastiff Alpha | Forest, Hill, Shadowfell, Swamp | Monstrosity | Shadow Mastiff | Medium | 49 | 2 | 450 | Neutral Evil | Volo's Guide to Monsters |
| Stirge | Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground, Urban | Beast | Tiny | 2 | 1/8 | 25 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 | |
| Common Enkki | Arctic, Coastal, Desert, Feywild, Forest, Grassland, Hill, Mountain, Shadowfell, Swamp, Underdark, Underground | Fey | Enkki | Small | 6 | 1/4 | 50 | Chaotic Neutral | Rlyehable |
| Venom Troll | Forest, Underdark, Underground, Arctic, Hill, Mountain, Swamp | Giant | Troll | Large | 94 | 7 | 2,900 | Chaotic Evil | Mordenkainen's Tome of Foes |
| Giant Ant | Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Beast | Ant, Giant Ant | Large | 52 | 2 | 450 | Unaligned | "Varied" |
| Lizardfolk Scaleshield | Forest, Swamp | Humanoid | Lizardfolk, Lizardfolk Scaleshield | Medium | 32 | 1 | 200 | Neutral | Ghosts of Saltmarsh |
| Adult Oblex | Swamp, Underdark, Urban | Ooze | Oblex | Medium | 75 | 5 | 1,800 | Lawful Evil | Mordenkainen's Tome of Foes |
| Ancient Black Dragon | Swamp | Dragon | Chromatic Dragon, Black Dragon | Gargantuan | 367 | 21 | 33,000 | Chaotic Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Bramble | Feywild, Forest, Grassland, Swamp | Fey | Tiny | 2 | 1/8 | 25 | Neutral Evil | Rlyehable | |
| Garurt | Forest, Swamp | Humanoid | Lizardfolk, Lizardfolk Scaleshield | Medium | 32 | 1 | 200 | Neutral | Ghosts of Saltmarsh |
| Kobold | Coastal, Desert, Forest, Hill, Mountain, Swamp, Underdark, Urban, Underground | Humanoid | Kobold | Small | 5 | 1/8 | 25 | Lawful Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Orc Eye of Gruumsh | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Orc, Cleric | Medium | 45 | 2 | 450 | Chaotic Evil | Monster Manual (5e) |
| Adult Topaz Dragon | Coastal, Swamp | Dragon | Gem Dragon, Topaz Dragon | Huge | 210 | 13 | 10,000 | Chaotic Neutral | Fizban's Treasury of Dragons |
| Charm | Feywild, Forest, Swamp, Underdark, Urban | Fey | Darkling, Darkling Elder | Medium | 27 | 2, 1/2 | 450, 100 | Chaotic Neutral | The Wild Beyond the Witchlight |
| Giant Constrictor Snake | Desert, Forest, Swamp, Underdark, Underground, Underwater | Beast | Snake | Huge | 60 | 2 | 450 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Ancient Vicious Drake | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground | Dragon | Drake, Vicious Drake | Gargantuan | 396 | 22 | 41,000 | Chaotic Neutral | Rlyehable |
| Snapper Saw | Forest, Swamp | Plant | Horrid Plant | Large | 42 | 4 | 1,100 | Unaligned | Quests from the Infinite Staircase |
| Sword Wraith Warrior | Grassland, Swamp | Undead | Sword Wraith | Medium | 45 | 3 | 700 | Lawful Evil | Mordenkainen's Tome of Foes |
| Orc | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Overview | Humanoid, Orc | SRD5, MM5e, VGtM | |||||
| Lizard | Coastal, Desert, Forest, Grassland, Hill, Mountain, Swamp, Underground, Urban | Beast | Lizard | Tiny | 2 | 0 | 10 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Trepsin | Arctic, Forest, Hill, Mountain, Swamp, Underdark, Underground | Giant | Troll, Four-Armed Troll | Large | 84 | 6 | 2,300 | Chaotic Evil | Hoard of the Dragon Queen |
| Bullywug Common | Swamp | Humanoid | Bullywug | Medium | 11 | 1/4 | 50 | Neutral Evil | Monster Manual (5e) |
| Atomie | Feywild, Forest, Swamp | Fey | Sprite | Tiny | 4 | 1/4 | 50 | Chaotic Neutral | Rlyehable |
| Bodak | Swamp, Underdark, Urban | Undead | Bodak | Medium | 58 | 6 | 2,300 | Chaotic Evil | VGtM, MotM |
| Hydroloth | Costal, Swamp, Underwater | Fiend | Yugoloth | Medium | 135 | 9 | 5,000 | Neutral Evil | Mordenkainen's Tome of Foes |
| Hydra | Swamp | Monstrosity | Hydra | Huge | 172 | 8 | 3,900 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Dracohydra | Coastal, Swamp | Monstrosity | Huge | 218 | 11 | 7,200 | Chaotic Evil | Fizban's Treasury of Dragons | |
| Giant Dragonfly | Coastal, Swamp | Beast | Insect | Large | 22 | 1/2 | 100 | Unaligned | The Wild Beyond the Witchlight |
| Nightwalker | Arctic, Desert, Swamp | Undead | Huge | 297 | 20 | 25,000 | Chaotic Evil | Mordenkainen's Tome of Foes | |
| Duke Ickrind | Feywild, Swamp | Humanoid | Bullywug | Medium | 11 | 1/4 | 50 | Neutral | The Wild Beyond the Witchlight |
| Star Spawn Grue | Mountain, Swamp | Aberration | Star Spawn | Small | 17 | 1/4 | 50 | Neutral Evil | Mordenkainen's Tome of Foes |
| Giant Toad | Coastal, Desert, Forest, Swamp, Underdark, Underground | Beast | Frog, Giant Toad | Large | 39 | 1 | 200 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Klarg | Feywild, Forest, Hill, Swamp | Fey | Huge | 92 | 7 | 2,900 | Chaotic Neutral | Rlyehable | |
| Mud Elemental | Coastal, Swamp, Underwater | Elemental | Mud Elemental | Large | 114 | 5 | 1,800 | Neutral | Quests from the Infinite Staircase |
| Yuan-ti Malison (5e)/Type 2 | Desert, Forest, Swamp | Monstrosity | Shapechanger, Yuan-ti | Medium | 66 | 3 | 700 | Neutral Evil | Monster Manual (5e) |
| Asher | Arctic, Coastal, Desert, Forest, Grassland, Hill, Mountain, Shadowfell, Swamp, Underground | Undead | Medium | 58 | 7 | 2,900 | Neutral Evil | Rlyehable | |
| Orc Hand of Yurtrus | Arctic, Forest, Grassland, Hill, Mountain, Swamp, Underdark, Underground | Humanoid | Orc | Medium | 30 | 2 | 450 | Chaotic Evil | Volo's Guide to Monsters |
| Darkling Elder | Forest, Swamp, Underdark, Urban | Fey | Darkling, Darkling Elder | Medium | 27 | 2 | 450 | Chaotic Neutral | MotM, VGtM, Varied, TWBtW |
| Troll | Forest, Underdark, Underground, Arctic, Hill, Mountain, Swamp | Giant | Troll | Large | 84 | 5 | 1,800 | Chaotic Evil | SRD-CC v5.1, SRD-OGL v5.1 |
| Bullywug Royal (5e)/Dunwater | Swamp | Humanoid | Bullywug, Bullywug Royal | Medium | 52 | 3 | 700 | Neutral Evil | Ghosts of Saltmarsh |
| Flying Monkey Aerialist | Feywild, Forest, Shadowfell, Swamp | Beast | Monkey, Flying Monkey | Small | 5 | 1/8 | 25 | Unaligned | Rlyehable |
| Lost Sorrowsworn | Shadowfell, Arctic, Desert, Forest, Mountain, Swamp, Underdark, Urban | Monstrosity | Sorrowsworn | Medium | 78 | 7 | 2,900 | Neutral Evil | Mordenkainen's Tome of Foes |
| Swarm of Ravens | Forest, Hill, Swamp, Urban | Swarm | Raven, Beast | Medium | 24 | 1/4 | 50 | Unaligned | SRD-CC v5.1, SRD-OGL v5.1 |
| Drake | Arctic, Desert, Forest, Mountain, Swamp, Underdark, Underground, Urban | Overview | Dragon, Drake | FToD, HotDQ, MotM, VGtM |
