Chirizuka Kaio 塵塚怪王

Large aberration (tsukumogami lord), neutral evil

Armor Class 15 (natural armor)

Hit Points 65 (10d10 + 10)

Speed 20 ft., burrow 10 ft. (through debris)

STR 18 (+4) · DEX 9 (−1) · CON 13 (+1) · INT 14 (+2) · WIS 14 (+2) · CHA 16 (+3)

Saving Throws Con +4, Wis +5, Cha +6

Skills Deception +6, Insight +5, Perception +5

Damage Resistances acid, necrotic; bludgeoning, piercing, and slashing from non-magical attacks

Damage Immunities poison

Condition Immunities exhaustion, poisoned, prone

Senses darkvision 60 ft., tremorsense 60 ft. (through solid debris only), passive Perception 15

Languages Common, Terran, telepathy 120 ft.

Challenge 4 (1,100 XP)

Traits

Trash Regeneration. Chirizuka Kaio regains 10 hit points at the start of its turn if it is within 15 feet of unattended non-living debris (rubble, refuse, broken objects, etc.) and it hasn’t taken fire or radiant damage since the end of its last turn.

Living Landfill. Non-magical difficult terrain made of rubble or trash costs no extra movement for Chirizuka Kaio. When it moves through such terrain, it can choose to leave it clear or churn it into fresh difficult terrain.

Actions

Multiattack. The kaio makes two attacks: one Smash and one Hurl Debris.

Smash. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 8 (1d8 + 4) bludgeoning damage plus 3 (1d6) necrotic damage.

Hurl Debris. Ranged Weapon Attack: +4 to hit, range 60/180 ft., one target. Hit: 8 (1d8 + 4) bludgeoning damage.

Cyclone of Refuse (Recharge 5–6). Chirizuka Kaio whirls nearby scrap into a 15-foot-radius sphere centered on itself. Each creature other than the kaio in that area must make a DC 14 Dexterity saving throw, taking 18 (4d8) bludgeoning damage on a failed save, or half as much on a successful one. The area becomes difficult terrain composed of loose trash until the start of the kaio’s next turn.

Bonus Actions

Animate Junk (1/Day). Up to three pieces of unattended debris within 30 feet spring to life as Tiny Animated Objects (MM p.19). They act on the kaio’s initiative (immediately after its turn) and obey its telepathic commands. The objects crumble after 1 minute or when reduced to 0 hit points.

Reactions

Feed on Contempt. When a hostile creature within 30 feet deals bludgeoning, piercing, or slashing damage to Chirizuka Kaio but the damage fails to bypass its resistance, the kaio regains hit points equal to half the amount prevented.

Lore

The “King of Trash,” an enormous yokai made of refuse and debris.

Chirizuka Kaio is a yokai whose name is built from the kanji: “dust” (塵), “mound” (塚), and “monster king” (怪王), literally marking him as the “King of the Trash Heap.” Legend paints him as the sovereign of discarded objects—tsukumogami. He rules not over what society treasures but over whatever it has consciously rejected, be that abandoned things or even forsaken human lives.

Appearance should be taken symbolically. He is usually described as a loose, amorphous mass in dark browns and grays. Rotting fibers, rusty metal shards, broken ceramics, shattered plastic, or dead electronics—whatever refuse the era provides—can be seen churning inside him. He has no skin; his surface constantly reshapes itself, sprouting wire tentacles or crude limbs made of construction debris. Buried in the bulk lies a core that acts as his spiritual center and anchor. When Kaio manifests in the real world, you notice stench, an eerie hush, missing small animals, and in humans an intrusive sense of shame over their own carelessness—sometimes outright fear.

From Yokai Bestiary 5E, Book Two, p. 20 · Fern Flower Press