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Ruins Monsters

123 D&D 5e monsters that dwell in ruins habitats — sorted by challenge rating so you can pick the right encounter for your tier.

Crawling Claw CR 0 · UndeadGhoul CR 1 · UndeadGhoul Craver CR 1 · UndeadKobold Trapsmith CR 1 · HumanoidCave Dragon Wyrmling CR 2 · DragonCobbleswarm CR 2 · Swam of Tiny MonstrositiesDoppelrat CR 2 · MonstrosityInk Devil CR 2 · Fiend (Devil)Kobold Alchemist CR 2 · HumanoidKot Bayun CR 2 · MonstrosityLightthief CR 2 · FiendFlame Dragon Wyrmling CR 3 · DragonGhoul, Darakhul CR 3 · UndeadAngler Worm CR 4 · MonstrosityCavelight Moss CR 4 · PlantDeathcap Myconid CR 4 · PlantDerro Fetal Savant CR 4 · HumanoidGiant Zombie CR 4 · UndeadImperial Ghoul CR 4 · UndeadKobold Chieftain CR 4 · HumanoidDerro Shadow Antipaladin CR 5 · HumanoidDogmole Juggernaut CR 5 · MonstrosityDream Eater CR 5 · FiendFlesh Mournling CR 5 · UndeadHound of the Night CR 5 · MonstrosityIron Ghoul CR 5 · UndeadCorrupted Ogre Chieftain CR 6 · GiantCrystalline Devil CR 6 · Fiend (Devil)Gnarljak CR 6 · ConstructDegenerate Titan CR 8 · GiantIdolic Deity CR 8 · ConstructBlood-Starved Vampire CR 9 · UndeadDeep Drake CR 9 · DragonHaunt CR 9 · UndeadHorakh CR 9 · MonstrosityKiona the Dread Lord CR 9 · UndeadAshen Hoarder CR 10 · ConstructFlintmoth Swarm CR 11 · Swarm of Tiny ElementalsLady Emer CR 11 · MonstrosityBonepowder Ghoul CR 12 · UndeadDragon Eel CR 12 · DragonGug CR 12 · GiantCambium CR 13 · FiendGypsosphinx CR 14 · MonstrosityAshyra CR 15 · UndeadIthu'rath the All-Seeing CR 15 · AberrationLacuna CR 15 · FiendAdult Cave Dragon CR 16 · DragonAdult Flame Dragon CR 16 · DragonDirt Mournling CR 18 · UndeadCount Rhodar von Glauer CR 19 · UndeadFlesh Colossus CR 20 · ConstructAncient Flame Dragon CR 24 · DragonBeggar Ghoul CR 1/2 · UndeadBlood-Borne Ooze CR 1/4 · OozeBlood-Borne Ooze Companion CR None · OozeCrawling Claw Companion CR None · UndeadDecrepit Skeleton CR 1/4 · UndeadDust Goblin CR 1/4 · HumanoidEmperor of the Ghouls CR 20 · UndeadGhost Sycophant CR None · UndeadLich CR 21 · UndeadHigh Mage Vairae CR 25 · UndeadLiving Wick CR 1/4 · ConstructMoss Lurker CR 1 · HumanoidNihilethic Zombie CR 1 · UndeadRatfolk Rogue CR 1 · HumanoidShade CR 1 · UndeadSpecter CR 1 · UndeadRoachling Lord CR 2 · HumanoidShellycoat CR 2 · FeyUraeus CR 2 · CelestialMinotaur CR 3 · MonstrosityMinotaur Lackey CR 3 · MonstrosityMinotaur Lackey Slime Servant CR 3 · MonstrosityMummy CR 3 · UndeadNight Scorpion CR 3 · BeastMummy Rotwrap CR 4 · UndeadOculo Swarm CR 4 · AberrationOstinato CR 4 · AberrationSkitterhaunt CR 4 · OozeLord Zombie CR 5 · UndeadMamura CR 5 · AberrationScheznyki CR 6 · FeyMallqui CR 8 · UndeadMap Mimic CR 1/4 · MonstrosityMedusa CR 6 · MonstrosityMedusa Headstrong CR None · MonstrosityMinotaur Devastator CR None · MonstrosityStygian Fat-Tailed Scorpion CR 3 · BeastVenomous Mummy CR 3 · UndeadWight CR 3 · UndeadWight Siphoner CR 3 · UndeadRat King CR 5 · MonstrositySarcophagus Slime CR 5 · UndeadShadow Beast CR 7 · FeyMultivok Bodyguard CR 8 · ConstructRust Drake CR 8 · DragonShabti CR 8 · ConstructOlothec CR 10 · AberrationMultivok Chief CR 14 · ConstructMordant Snare CR 15 · AberrationRatfolk CR 1/4 · HumanoidRoachling Skirmisher CR 1/4 · HumanoidRotting Zombie CR 1/4 · UndeadVampire Spawn CR 5 · UndeadWraith CR 5 · UndeadYoung Cave Dragon CR 8 · DragonUshabti CR 9 · ConstructYoung Flame Dragon CR 9 · DragonSathaq Worm CR 10 · ElementalServok Miner CR 10 · ConstructServok Builder CR 12 · ConstructVampire CR 13 · UndeadServok War Engine CR 16 · ConstructRunic Colossus CR 21 · ConstructShadow CR 1/2 · UndeadSkeleton CR 1/4 · UndeadUrochar (Strangling Watcher) CR 17 · AberrationThornblood CR 20 · PlantVampire Neophyte CR None · UndeadWight Deathguard CR None · UndeadZombie CR 1/4 · Undead