Laura Bailey Black Widow / Little Girl / Sister (voice) Trevor Devall Red Guardian / Hydra Goon 1 (voice) Haley Joel Osment The Collector (voice) Steve Blum Wolverine / Wendigo 3 / Hydra Goon 5 (voice) Will Friedle Hydra Goon 3 (voice) James C. Mathis III Black Panther (voice) Liam O'Brien Red Skull / Hydra Goon 2 (voice) Bumper Robinson Captain America - Sam Wilson / Hydra Goon 4 (voice) Roger Craig Smith Captain America - Steve Rogers / Red Ghost / Brother (voice) Fred Tatasciore Hulk / Wendigo 1 / Santa Claus (voice) Travis Willingham Thor / Wendigo 2 (voice) Mick Wingert Iron Man / Omega Red / Hot Dog Vendor (voice)