Glabrezu

Large Fiend (Demon), Chaotic Evil

AC 17     Initiative +6 (16)
HP 189 (18d10 + 90)
Speed 40 ft.

Ability Scores
STR 20 (+5) Save +9    DEX 15 (+2) Save +2    CON 21 (+5) Save +9
INT 19 (+4) Save +4    WIS 17 (+3) Save +7    CHA 16 (+3) Save +7

Skills Deception +7, Perception +7
Resistances Cold, Fire, Lightning
Immunities Poison; Poisoned
Senses Truesight 120 ft.; Passive Perception 17
Languages Abyssal; telepathy 120 ft.
CR 9 (XP 5,000; PB +4)

Traits
Demonic Restoration. If the glabrezu dies outside the Abyss, its body dissolves into ichor, and it gains a new body instantly, reviving with all its Hit Points somewhere in the Abyss.
Magic Resistance. The glabrezu has Advantage on saving throws against spells and other magical effects.

Actions

Multiattack. The glabrezu makes two Pincer attacks and uses Pummel or Spellcasting.

Pincer. Melee Attack Roll: +9, reach 10 ft. Hit: 16 (2d10 + 5) Slashing damage. If the target is a Medium or smaller creature, it has the Grappled condition (escape DC 15) from one of two pincers.

Pummel. Dexterity Saving Throw: DC 17, one creature Grappled by the glabrezu. Failure: 15 (3d6 + 5) Bludgeoning damage