Xenobodies are a form of Mania monster that commonly act as common servants and operatives for Underground field agents. They resemble adult human men dressed in black raincoats, making them appear similar to human agents such as Parma and Segal, but they are not human and have no independent will of their own. Xenobodies display similar abilities to other Underground agents, such as conjuring tentacles of black fire, smoke or sludge. When they use these abilities, the fiery vertical eye of the Underground appears on the back of their hand.