Marvin is a ruthless mercenary active in Desert Kingdom.
His body is as if it was engineered for pure destruction. With his inhumane strength and toughness, he was feared even among the fellow mercenaries. He was never welcomed into any place and has given up on getting close with anyone. He is harsh and jaded. But if he were to find something precious to him, he wouldn't stop at anything to protect it.
As he's been through myriads of battles, he's never agitated by one. In fact, many would say he seems more relaxed and comfortable in battles.