Gatu is a former professor at the [[Spellcasters Academy]] who got kicked out when his research started becoming uncontrollable. He studies demons and works as a necromancer. He tried to summon and bind a bone devil and failed. He can commonly be found at the [[Yawning Portal]]. He is a tiefling. He gave [[Forrest]] a bunch of helpful information about the [[Spellcasters Academy]] and demons before he returned.