Rin is an average male teenager with black hair (in the anime, it has a blue hue), which is a bit longer than that of Yukio's, and slightly pale skin. While in his human form, Rin exhibits a number of physical traits that are signs of his demonic nature, such as sharper-looking teeth, slightly pointed ears, and a black, fur-tufted tail (he keeps it hidden under his shirt). As a demon, Rin gains two blue flames that look like horns floating above his head, long elf-like ears