Dark-tipped fur with white roots and large, dark ears, which are good for blending in with rocks and shadows. His head and shoulders are considerably darker than his his rear end and tail. Ru's eyes are a pale brownish-red and lined with dark lashes. As of all arctic foxes, his coat changes to a beautiful white during the winter. There is nothing about his physical appearance that hints at unique traits (i.e. his legs are not particularly long or slender, his body is not unusually lethe, and his height is perfectly average) and he is currently unscarred.