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 Michael Clarke Duncan voices Groot Billy West voices Rocket Raccoon Nika Futterman voices Gamora David Sobolov voices Drax Chris Cox voices Star-Lord Dee Bradley Baker voices Chitauri 1 Dee Bradley Baker voices Chitauri 2 Grey DeLisle Griffin voices Tana Nile James Marsters voices Korvac James Marsters voices Chitauri 3 David Sobolov voices Chitauri Leader