Armor Class 17
Hit Points 189 (18d10 + 90)
Speed 40 ft.
Saving Throws STR +9, CON +9, WIS +7, CHA +7
Skills Deception +7, Perception +7
Damage Resistances cold, fire, lightning
Damage Immunities poison
Condition Immunities poisoned
Senses Truesight 120 ft., passive Perception 17
Languages Abyssal; telepathy 120 ft.
Challenge 9
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.
Multiattack. The glabrezu makes two Pincer attacks and uses Pummel or Spellcasting.
Pincer. m +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. dex DC 17, one creature Grappled by the glabrezu. 15 (3d6 + 5) Bludgeoning damage. Half damage.
Monster Manual (2024), p. 138