Nyen is Luther's catman. He has light pink hair cut in a bob cut with bangs, and he wears a black hat with pointed, cat ears on his head. He has four eyelashes, two under both eyes. He is aggressive and never admits defeat. He loves to hunt rats, and when caught, he hurts for a long time before killing. He lives in the Ivory house, sharing a room with Nyon. Respects Luther, dislikes Randal, treats Sebastian with contempt. He smokes and has a driver's license. Doesn't like to talk, but can.