Armor Class 22 (natural armor)
Hit Points 725 (50d10 + 450)
Speed 30 ft., fly 120 ft. (hover)
STR
30 (+10)
DEX
21 (+5)
CON
28 (+9)
INT
25 (+7)
WIS
30 (+10)
CHA
30 (+10)
Saving Throws Str +19, Con +18, Int +16, Cha +19
Skills Arcana +16, Deception +28, Insight +28, Intimidation +19, Perception +19, Persuasion +19, Religion +16
Damage Resistances cold
Damage Immunities fire, poison; bludgeoning, piercing, and slashing from nonmagical attacks that aren't silvered
Condition Immunities blinded, charmed, frightened, paralyzed, poisoned, stunned
Senses darkvision 120 ft., truesight 60 ft., passive Perception 29
Languages all, telepathy 120 ft.
Challenge 30 (155000 XP)
Proficiency Bonus +9
Antimagic Aura.
Fiendish Regeneration.
Legendary Resistance (3/Day).
Submission Aura.
Multiattack.
Ruby Rod.
Chilling Gaze.
Hellish Smite.
Infernal Word: Stun (Recharge 4-6).
Hell-Lord's Suggestion (Recharge 5–6).
Fires of the Nine Hells (Recharge 5–6).
Spellcasting.
Ruby Absorption.
Channel Ruby Rod.
Strike (Costs 2 Actions).
Call Underling (Costs 3 Actions).