Wolfrun is an anthropomorphic gray wolf with violet eyes, a dark gray nose, long white hair, and a white bushy tail. He wears a blue leather sleeveless biker's outfit with a high collar and chunky belt. Wolfrun is easy-going and cocky when he does his work. He is sometimes very impatient when he is provoked, easily getting enraged, especially during fierce battles. Outside of his mission to collect Bad End Energy, he appears to be quite careless and laid-back.