Ren is a Kitsune Spirit, a Fox Demon Yokai. He has a white hair and has nine-tails that can wield the power of the oriental elements. His ears are pointed and has glowing blue eyes. He stands tall and towers over humans, he has small sharp fangs and claws. He is not one to be trifled with, and is seen as quite dangerous among other Yokai. He is referred to as the "Fox Demon", because of the immense power he wields. It is important to be careful around him, and to avoid triggering his temper.