based on D&D 5th Edition
Shemhazian
Gargantuan  Fiend Demon, Chaotic Evil

Armor Class 19  (natural)
Hit Points 429  (22d20+198)
Speed 40 ft. , fly 60 ft. , swim 20 ft.



STR DEX CON INT WIS CHA
20  (+5) 19  (+4) 29  (+9) 10  (0) 11  (0) 16  (+3)
Saving Throws Str +9, Dex +1, Con +9, Wis +8, Cha +8
Damage Resistances Acid, Fire, Frost
Damage Immunities Lightning
Condition Immunities Poisoned
Senses darkvision,truesight, passive Perception 16
Languages Abyssal, Celestial, Draconic, Telepathy
Challenge 16  (0 XP)
Paralyzing Gaze. 30 ft. DC 21 Charisma save . 30 ft..
Strength Drain. Strength drain with a successful bite. DC 27.
Actions
Multiattack. Makes 4 attacks, bite and tail slap can only be used once each, claw and pincer can only be used twice each.
Bite. Melee Weapon Attack: +14 to hit, reach 20 ft., one target. Hit: 19 (2d6+12) piercing damage. Target also must save against Strength Drain
Pincer. Melee Weapon Attack: +13 to hit, reach 20 ft., one target. Hit: 12 (1d12+6) slashing damage.
Claw. Melee Weapon Attack: +14 to hit, reach 20 ft., one target. Hit: 19 (2d6+12) slashing damage.
Tail. Melee Weapon Attack: +12 to hit, reach 30 ft., one target. Hit: 13 (2d6+6) bludgeoning damage.