Guest Stars James Arnold Taylor voices Cosmo Cree Summer voices Nebula Troy Baker voices Loki James Arnold Taylor voices Yondu Logan Miller voices Sam Alexander / Nova Fred Tatasciore voices Hulk Mick Wingert voices Iron Man Seth Green voices Howard the Duck Trevor Devall voices Father Will Friedle voices Ultroid #2 Kevin Michael Richardson voices Ultroid #1 Troy Baker voices Ultroid #3 Fred Tatasciore voices Son