Hell Hound

Medium Fiend, Lawful Evil

AC: 15

Initiative: +1 (11)

HP: 58 (9d8 + 18)

Speed: 50 ft.

STR
17 (+3)
DEX
12 (+1)
CON
14 (+2)
INT
6 (-2)
WIS
13 (+1)
CHA
6 (-2)

Skills: Perception +5

Immunities: fire

Senses: Darkvision 60 ft., Passive Perception 15

Languages: understands Infernal but can't speak

CR: 3 (XP 700; PB +2)

Habitat: Mountain, Planar, Lower, Underdark

Pack Tactics.

The hound has Advantage on an attack roll against a creature if at least one of the hound's allies is within 5 feet of the creature and the ally doesn't have the Incapacitated condition.

Actions

Multiattack.

The hound makes two Bite attacks.

Bite.

Melee Attack Roll: +5, reach 5 ft. Hit: 7 (1d8 + 3) Piercing damage plus 3 (1d6) Fire damage.

Fire Breath (Recharge 5-6).

Dexterity Saving Throw: DC 12, each creature in a 15-foot Cone. Failure: 17 (5d6) Fire damage. Success: Half damage.

Find this creature in the encounter builder

Hell Hound

Source: Stranger Things: Welcome to the Hellfire Club, p. 165 - Licenses and attribution