Harat, Lord of Darkness

This demon is surrounded by a dark malevolence that could drive a person mad if they stared too long.

Special abilities
Harat is immune to poison and has permanent true seeing. Harat can use aura of fear four times per day and summon Tanarri once per day. Additionally he can cast as spell-like abilities fireball four times per day and wall of fire twice per day each at caster level 15.