Balugrut, The Hungerer

Thought Detection. Balugrut does not need light to see, and instead focuses on the target's mental state. All creatures within 120ft of Balugrut must make a DC 12 Wisdom Saving Throw, or Balugrut will be notified on their presence.

Spellcasting. Balugrut is a 2nd level spellcaster. Its spellcasting ability is Charisma (spell save DC 13, +3 to hit with spell attacks). Balugrut has following Warlock spells prepared:
Cantrips (at will): Eldritch Blast 
1st level (2 slots): Hold Person, Suggestion

Grow Limb. Balugrut may spend an action on his turn to grow an additional limb. It grants him an addition 20ft of movement, and an additional attack.

Rake. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit: 9 (2d6 + 4) slashing damage. The target must make a DC 12 Constitution Saving Throw. Balugrut is healed half the damage on a failed throw, and healed none on a success.

Mortify. Ranged Spell Attack: +3 to hit, range 60ft., 1 target. Hit: # (1d8 + 4) psychic damage.The target must make a DC 12 Wisdom saving throw. On a failed throw, the target's worst fear is conjured, and they are stunned for the next round, and take full damage. On a success, the target takes half damage and is not stunned.

Suckerpunch. Balugrut temporarily grows a limb and attacks a foe that is just about to successfully attack him. On hit, the target takes 1D4 Bludgeoning damage.