Azazal - The Baby Goat

Undying. Azazal can never truly be defeated. If his hit points drop to 0, he will phase out of the current plane of existence and return to his home layer of Hell.

Demonic Cuteness. Azazal strikes a cute pose. All creatures in visual range must make a DC 16 Wisdom saving throw or be magically charmed for 1 day. The charmed target obeys the fiend's verbal or telepathic commands. If the target suffers any harm or receives a suicidal command, it can repeat the saving throw, ending the effect on a success. If the target successfully saves against the effect, or if the effect on it ends, the target is immune to this fiend's Charm for the next 24 hours.

Bite. Melee Weapon Attack: +8 to hit, reach 5 ft., single target. Hit: 12 (2d8 + 4) piercing damage. 

Headbutt. Melee Weapon Attack: +8 to hit, reach 5 ft, single target. Hit: 16 (2d12 + 4) bludgeoning damage. On hit, target must make a DC 15 Strength saving throw, on a fail, the target is knocked prone.

Banishment Headbutt (Recharge 1/2). Melee Weapon Attack: +5 to hit, reach 5 ft, single target. Hit: 10 (2d8 + 4) Necrotic damage. On hit, target must make a DC 12 Wisdom saving throw, on a fail, the target is banished for one minute, or until Azazal is defeated.

Wunderbaa! (Recharge 5/6). Azazal lets out an loud "Baa". The force of this baa causes all enemies within 10ft to make a DC15 Strength saving throw. All enemies who fail are knocked backwards 20ft and knocked prone.

Brimstone Blast (3/day). Ranged Weapon Attack: +8 to hit, range 60ft, single target. Hit: 18 (6d6 + 6) Necrotic damage and 18 (6d6 + 6) Force damage. The target must make a DC18 Strength saving throw, or be moved back 40ft. If this attack reduces the target to 0 hit points, the target is disintegrated.