Red Son looks akin to an average human teenager. 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, a pair of dark horns framing it. He also has a 'X' shaped scar on his right cheek and a red dot on his forehead. He has traits from his father, giving him the fluffy bull ears, thin tail with a tuff at the end, and button nose. His hands and lower arms have turned ash-black from using his fire.