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He is the true master of the mansion that is being used as the Black Bulls' hideout. He has a special condition where he can't survive unless he gets small amounts of mana from others and he ends up absorbing mana from anyone who gets close to him. He is quite lax and speaks very slowly. He can't leave the mansion that he's used to living in, but by receiving mana from others, he can transform the mansion and even make it move. He ends up absorbing a lot of mana when people get close to him, so he quietly watched over his friends in the Black Bulls. And because of that, he was mistaken for a ghost that lived in the hideout for years.