Guest Stars Gui Agustini voices Roberto Da Costa Chris Britton voices Mr. Sinister Gil Birmingham voices Forge Chris Potter voices Cable Isaac Robinson-Smith voices Bishop Theo James voices Bastion Josh Keaton voices Captain America Gates McFadden voices Mother Aksani Jennifer Hale voices World Leader #3 Ross Marquand voices Apocalypse Adetokumboh M'Cormack voices En Sabah Nur Matthew Waterson voices World Leader #1 JP Karliak voices World Leader #2 JP Karliak voices Radio Jockey Isaac Robinson-Smith voices King T'Chaka Co Starring Arthur Ortiz voices Additional Voices Terri Douglas voices Additional Voices Robin Atkin Downes voices Additional Voices Matthew Wood voices Additional Voices Shelby Young voices Additional Voices Michael Ralph voices Additional Voices Helen Sadler voices Additional Voices David W. Collins voices Additional Voices Credit Only Catherine Disher voices Val Cooper Uncredited JP Karliak voices Mr. Sinister (Morph)