Yeenoghu

Huge fiend (demon), chaotic evil
Armor Class 20 (natural armor)
Hit Points 333 (23d12 + 184)
Speed 50 ft.
STR
29 (+9)
DEX
16 (+3)
CON
23 (+6)
INT
15 (+2)
WIS
24 (+7)
CHA
15 (+2)
Saving Throws Dex +10, Con +15, Wis +14
Skills Intimidation +9, Perception +14
Damage Resistances cold, fire, lightning
Damage Immunities poison; bludgeoning, piercing, and slashing that is nonmagical
Condition Immunities charmed, exhaustion, frightened, poisoned
Senses truesight 120 ft., passive Perception 24
Languages all, telepathy 120 ft.
Challenge 24 (62000 XP)

This full creature's stat block is not available.

Yeenoghu is the Gnoll Lord, and his creations are made in his twisted image.
DnD 5e Monsters › Mordenkainen┬┤s Tome of Foes