Guest Stars Chris Cox voices Clint Barton / Hawkeye Fred Tatasciore voices The Hulk Troy Baker voices Clay Quartermain Gabriel Mann voices Bruce Banner Vanessa Marshall voices Natasha Romanoff / The Black Widow Robin Atkin Downes voices Baron Zemo Robin Atkin Downes voices Abomination Jeffrey Combs voices The Leader Rick D. Wasserman voices Carl Creel / Absorbing Man