Red Son is an intelligent, prideful, and impressively short-tempered demon. He has red hair tied into a high ponytail, a section of it stands up at his widows peak with a yellow highlight resembling fire. He also has a 'X' shaped scar on his right cheek and a red dot on his forehead. Red wears small glasses, a red long-sleeved trench coat over a black shirt, indigo shoe-pants with a pink belt, and orange suspenders. He formerly held the samadhi fire, and now only has fire magic.