Guest Stars Logan Miller voices Sam Alexander / Nova Ogie Banks voices Luke Cage / Power Man Caitlyn Taylor Love voices Ava Ayala / White Tiger Misty Lee voices Aunt May Parker Chris Cox voices Captain America Nika Futterman voices Gamora Billy West voices Rocket Raccoon Michael Clarke Duncan voices Groot David Sobolov voices Drax Chris Cox voices Star-Lord James Marsters voices Korvac James Marsters voices Chitauri 3 Grey DeLisle Griffin voices Tana Nile Dee Bradley Baker voices Chitauri 1 Dee Bradley Baker voices Chitauri 2 David Sobolov voices Chitauri Leader