Underworld Cerberus

Large monstrosity, Lawful Evil

Armor Class

16 (natural armor)

Hit Points

104 (11d10+44)

Speed

walk 60 ft.

Skills

Athletics +7, Perception +9, Stealth +4

Damage Immunities

fire, necrotic

Condition Immunities

blinded, charmed, deafened, exhaustion, frightened, stunned

Senses

truesight 30 ft.

Languages

understands all languages but can't speak

Challenge

6

Aggressive

As a bonus action, the cerberus can move up to its speed toward a hostile creature that it can see.

Multiheaded

The cerberus can't be surprised, and it has advantage on saving throws against being knocked unconscious.

Pack Tactics

The cerberus has advantage on an attack roll against a creature if at least one of the cerberus's allies is within 5 feet of the creature and the ally isn't incapacitated.

Actions

Multiattack

The cerberus makes three bite attacks.

Bite

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage plus 3 (1d6) fire damage.

Breath Weapon (Recharge 5-6)

The cerberus exhales a 30-foot cone of molten rock. Each creature in the cone must make a DC 15 Dexterity saving throw, taking 21 (6d6) fire damage on a failed save, or half as much damage on a successful one. On a failed save, a creature is also restrained by the hardening rock. A creature can make a DC 15 Strength (Athletics) check as an action, freeing itself or a creature within reach from the rock on a success. The rock has AC 17 and 20 hit points, and it is immune to fire, poison, and psychic damage.