Suggestions by @rockscar

Peter Claffey

as The Mystical Thor in The Mystical Thor: Prince of Thunder

David Sobolov

as The Sentinel in Ultimate X-Men

Peter Sarsgaard

as Bolivar Trask in Ultimate X-Men

Rhea Seehorn

as Senator. Valerie Cooper in Ultimate X-Men

Nicholas Hamilton

as Pyro in Ultimate X-Men

Hafþór Júlíus Björnsson

as Juggernaut in Ultimate X-Men

Billie Piper

as Mystique in Ultimate X-Men

Moisés Arias

as Toad in Ultimate X-Men

Chloe East

as Scarlet Witch in Ultimate X-Men

Noah Jupe

as Quicksilver in Ultimate X-Men

Jack Champion

as Cannonball in Ultimate X-Men

Bailey Bass

as Nightcrawler in Ultimate X-Men

Josh Heuston

as Gambit in Ultimate X-Men

Joshua Odjick

as Warpath in Ultimate X-Men

Sophie Thatcher

as Rogue in Ultimate X-Men

Brian Tyree Henry

as Beast in Ultimate X-Men

Mason Thames

as Iceman in Ultimate X-Men

KiKi Layne

as Storm in Ultimate X-Men

Erin Kellyman

as Phoenix in Ultimate X-Men

Mackenyu

as Cyclops in Ultimate X-Men