The Watcher breaks his oath and recruits heroes from across the multiverse to battle against Ultron.
Quest roles:
Hayley Atwell(Peggy Carter / Captain Carter (voice)), Chris Hemsworth(King Thor Odinson (voice)), Chadwick Boseman(Star Lord T'Challa (voice)), Frank Grillo(Brock Rumlow (voice)), Tom Hiddleston(Loki (voice)), Samuel L. Jackson(Sir Fury (voice)), Michael B. Jordan(Killmonger (voice)), Toby Jones(Arnim Zola (voice)), Ross Marquand(Werner (voice)), Terri Douglas(Additional Voices (voice)), Helen Sadler(Additional Voices (voice)), Matthew Wood(Additional Voices (voice)), Kurt Russell(Ego / Ego's Computer / Ego's Army (voice)), Fred Tatasciore(Additional Voices (voice)), Lake Bell(Natasha Romanoff (voice)), Mick Wingert(Tony Stark (voice)), Benedict Cumberbatch(Strange Supreme / Demon Strange (voice)), Robin Atkin Downes(Additional Voices (voice)), Kari Wahlgren(Additional Voices (voice)), Ozioma Akagha(Shuri (voice)), Georges St-Pierre(Batroc (voice)), Cynthia Kaye McWilliams(Gamora (voice)), Shondalia White(Additional Voices (voice)), Arthur Ortiz(Additional Voices (voice)), Brian T. Delaney(Peter Quill (voice)), Chuck Billy(Additional Voices (voice)), Justin Shaw(Additional Voices (voice))