Harry Lloyd

as Hugo Pym

as Will

as DCI Hector Morgan

as Andrew Carter

as Richard III/Pete

as Self / Viktor (voice)

as 343 Guilty Spark (voice)

as Viktor (voice)

as Captain Mann / Stormtrooper #2 (voice)

as Bernard Marx

as Mr. Jackson

as Geoffrey

as Nathan Slater

as Viserys Targaryen (voice)

as Peter Quayle

as Young Joe

as Charles Xavier / Professor X

as Adolf Opálka

as Henry Gibson

as Ambro Scientist

as Craig Harrison

as Harry Percy

as Brian

as Lord Riot

as Paul Crosley

as Virgil

as Matty Beckett

as Mortimer

as Herbert Pocket

as Young Denis Thatcher

as Viserys Targaryen

as Richard Mason

as Alexander Taylor-Pierce

as Prince Rupert

as Lucas

as Peter

as Will Scarlet

as Jason Bradley

as Baines / Son of Mine

as The Butcher (voice)

as Matt Pattinson

as Young Rivers

as Young Steerforth