His credits include the voice of Spike Spiegel in Cowboy Bebop, Zeb Orrelios in Star Wars Rebels, Mugen in Samurai Champloo, Roger Smith from The Big O, Orochimaru and Zabuza Momochi in Naruto and Wolverine in multiple Marvel productions. Steven Jay Blum was born in Santa Monica, California, on April 29, 1960, into a Jewish family.