Hugh

He is the head of the three Zymot Usurpers and the main antagonist of series 1 and a major antagonist of series 2. He wears a mask over his mouth until Amil Gaoul (the Key Spirit he stole from Zed ) rejects him. He has a strict personality, but acts somewhat insane after he's rejected by Amil Gaoul. He is the previous owner of the Key Spirit, Pronimo, later stolen by Sara after Hugh's defeat.