Guest Stars Ogie Banks voices Luke Cage / Power Man Greg Cipes voices Danny Rand / Iron Fist Tom Kenny voices Doctor Octopus / Doc Ock Misty Lee voices Aunt May Parker Roger Craig Smith voices Captain America Dee Bradley Baker voices Flint Marko / Sandman Jeff Bennett voices Collector Jeff Bennett voices Grandmaster Jonathan Adams voices Absorbing Man Laura Bailey voices Black Widow Clancy Brown voices Red Hulk Dee Bradley Baker voices Zzzax James Arnold Taylor voices Blastaar Ben Diskin voices Skaar