Rubeus is a man with bright red hair, styled to look like a flame, and red eyes, and he has the black, upside-down crescent moon on his forehead. For clothes, he wears a brown leather vest, pants with a camouflage-like design, black leather boots with laces, and a necklace with a stone pendant on it, and the evil black crystal earrings. The Materials' Collection describes that his skin is a bit darker than Saphir's or Demande's. He is also seen carrying a jacket with the same camouflage-like design as his pants, but he is never seen wearing the jacket.