Armor Class 13 (natural armor)
Hit Points 11 (2d8 + 2)
Speed 20 ft.
Skills Perception +1
Damage Resistances acid, cold, [object Object]
Damage Immunities fire, poison
Condition Immunities blinded, charmed, frightened, poisoned
Senses blindsight 10 ft. (blind beyond this radius), passive Perception 11
Languages understands Infernal but can't speak
Challenge 1/2
Cloud of Vermin. Any creature, other than a devil, that starts its turn within 20 feet of the nupperibo must make a DC 11 Constitution saving throw. A creature within the areas of two or more nupperibos makes the saving throw with disadvantage. On a failure, the creature takes 2 (1d4) piercing damage.
Hunger-Driven. In the Nine Hells, the nupperibos can flawlessly track any creature that has taken damage from any nupperibo's Cloud of Vermin within the previous 24 hours.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage.
Mordenkainen's Tome of Foes, p. 168