Corpsesewn Colossus

Huge construct, neutral evil

Armor Class 13
Hit Points 225 (18d12 + 108)
Speed 40 ft., climb 30 ft.

22 (+6) 16 (+3) 22 (+6) 1 (-5) 11 (+0) 1 (-5)

Damage Resistances fire, necrotic; bludgeoning, piercing, and slashing from nonmagical attacks that aren’t adamantine
Damage Immunities poison
Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned, unconscious
Senses darkvision 120 ft., passive Perception 10
Challenge 12 (8,400 XP)
Proficiency Bonus +4


  • Constructed Nature. The colossus doesn’t require air, food, drink, or sleep.
  • Magic Resistance. The colossus has advantage on saving throws against spells and other magical effects.
  • Magic Weapons. The colossus’s weapon attacks are magical.
  • Malfunctioning Furnace. When thoroughly damaged, the furnace mounted on the corpsesewn colossus’s back releases waves of deadly, toxic smoke. Whenever the colossus starts its turn with 80 hit points or fewer, the smoking furnace mounted to its torso backfires. Each creature within 10 feet, including the colossus, must make a DC 18 Dexterity saving throw, taking 14 (4d6) fire damage and 14 (4d6) poison damage on a failed save, or half as much damage on a successful one.


  • Multiattack. The colossus makes three attacks: one with its bite and two with its slam.
  • Bite. Melee Weapon Attack: +10 to hit, reach 15 ft., one creature. Hit: 25 (3d12 + 6) piercing damage, and the target is grappled (escape DC 20). Until the grapple ends, the target is restrained, and the colossus can’t bite a different creature.
  • Slam. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 19 (3d8 + 6) bludgeoning damage.
  • Blaze a Trail. The colossus moves up to its speed. It can make up to three slam attacks at any point during this movement.
  • Swallow. The colossus makes a bite attack against a Medium or smaller target it is grappling. If the attack hits, the target is also swallowed, and the grapple ends. While swallowed, the target is blinded and restrained, it has total cover against attacks and other effects outside the colossus, and it takes 21 (6d6) acid damage at the start of each of the colossus’s turns. If the colossus takes 25 damage or more on a single turn from a swallowed creature, or if the colossus dies, it regurgitates all swallowed creatures, which fall prone in a space within 10 feet of the colossus.
  • Spew Smog (Recharge 5-6). The colossus vomits forth a wave of toxic smog in a 30-foot cone. Each creature in the area must make a DC 18 Constitution saving throw. On a failure, a creature takes 45 (13d6) poison damage and is poisoned until the end of its next turn. On a success, the target takes half as much damage and isn’t poisoned.


Crown devils can inhabit virtually any type of headdress or formal headwear that denotes a status of royalty or authority.

Some coromns have even been known to inhabit other royal garments such as royal rings, mantles, or scepters.

A corpsesewn colossus is a nightmarish machine of flesh and steel, animated from the bones and flesh of untold masses and powered by a nightmarish engine of iron and steel. The horrific construct’s body is sutured skin and twitching limbs that terminate in an enormous maw filled with clanking metal teeth, while two massive arms pull the behemoth along. While it may initially seem animated by necromantic powers or undead magic, the corpsesewn colossus is actually powered by a massive, rumbling, smog-spewing machine attached to the back of its worm-like body.

Corpsesewn colossi are typically created by deranged alchemists and wizards, and often only by those innovators who have already mastered the art of smaller such monstrosities like flesh golems and skinstitches. Still, it takes a special mind to craft (or to even concoct in the first place) this particular brand of horror. Perhaps, then, it only makes sense that corpsesewn colossi are more common in war-torn nations, where scruples tend to be as scant as corpses are prevalent.

Though their missions vary by the crafter, corpsesewn colossi tend not to have a much greater purpose than to scour the land in search of ever more bodies to consume in order to fuel their own hellish engine. In this way, they are perpetual murder machines: powered by death only so that they may inflict yet more death.

Section 15: Copyright Notice

Battlezoo Bestiary (5E) © 2022, Skyscraper Studios, Inc.; Authors: William Fischer, Stephen Glicker, Paul Hughes, Patrick Renie, Sen.H.H.S., and Mark Seifter.

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