Mithrun

Mithrun, referred to most often by his title Captain Mithrun, is the captain of the squad of Canaries sent to deal with the dungeon on the Island.
He has a very poor sense of direction. He is calm and collected at all times, and is very blunt when speaking.
Mithrun wields teleportation magic, often using it to replace sections of his opponent's bodies with other objects, thereby restricting their ability to attack.

He is unaware of his own needs because the demon he made a pact with during his time as a Dungeon Lord devoured all of his desire, leaving only his desire for revenge.

(Source: Dungeon Meshi Wiki)