Gaki
Medium Undead, chaotic evil
Armor Class 14
Hit Points 75 (10d8+30)
Speed walk +30
Challenge 8
Saving Throws cha +6, wis +4
Skills perception +4
Damage Resistances acid, fire, lightning, thunder; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities cold, necrotic, poison
Condition Immunities charmed, exhaustion, frightened, grappled, paralyzed, petrified, poisoned, prone, restrained
Senses darkvision 60 ft., passive Perception 14
Languages any languages it knew in life
Special Abilities
Aura of Famine. If a creature starts its turn within 10 feet of a gaki, it is overwhelmed by a hunger that dissolves fat and atrophies muscle. It must make a DC 14 Constitution saving throw, taking 11 (2d10) necrotic damage on a failed save, or half as much damage on a successful one.
Gluttonous Attraction. At the start of its turn, if a creature can see the gaki, it must make a DC 14 Wisdom saving throw. On a failure, it is overcome with a desire to kill and eat the ghost, and it must move as close to the gaki as it can.
Hungry Frenzy. The gaki has advantage on melee attack rolls against any creature that doesn't have all its hp.
Incorporeal Movement. The gaki can move through other creatures and objects as if they were difficult terrain. It takes 5 (1d10) force damage if it ends its turn inside an object.
Actions
Multiattack. The gaki makes two bite attacks.
Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) piercing damage plus 7 (2d6) acid damage.
Spit Acid. Ranged Spell Attack: +6 to hit, range 30 ft., one target. Hit: 21 (6d6) acid damage.
Source: Creature Codex · OGL/Open