Suggestions by @slurpad

Baron Von Strucker

as Loki's New Ally in The Mighty Thor

Christopher Eccleston

as Loki's New Ally in The Mighty Thor

Spoiler

as Loki's New Ally in The Mighty Thor

Justice Smith

as Bobby Drake in Uncanny X-Men

Sentinels

as Sentinels in Uncanny X-Men

Cary Elwes

as Robert Kelly in Uncanny X-Men

Sam Rockwell

as Steven Lang in Uncanny X-Men

Jamie Bell

as Calvin Rankin in Uncanny X-Men

Alan Ruck

as Warren Worthington II in Uncanny X-Men

Cara Delevingne

as Danger Room in Uncanny X-Men

Himesh Patel

as Hank McCoy in Uncanny X-Men

Alexander Ludwig

as Piotr Rasputin in Uncanny X-Men

Olivia Cooke

as Jean Grey in Uncanny X-Men

Ralph Fiennes

as Charles Xavier in Uncanny X-Men

John Boyega

as Scott Summers in Uncanny X-Men

Odessa A'zion

as Kitty Pryde in Uncanny X-Men

Hugo Weaving

as Bolivar Trask in Uncanny X-Men

Jason Bateman

as William Stryker in Uncanny X-Men

Tommy Dorfman

as Warren Worthington in Uncanny X-Men

Jason Isaacs

as Erik Lehnsherr in Uncanny X-Men