Suggestions by @reclaimer

Paul Bettany

as John Constantine in Justice League

Peter Serafinowicz

as John Constantine in Justice League

Marisha Ray

as April O'Neil in Teenage Mutant Ninja Turtles

Joseph LoDuca

as Composer in Inspector Gadget

Steven S. DeKnight

as Writer in Inspector Gadget

Paul Dini

as Writer in Inspector Gadget

Steven E. de Souza

as Writer in Inspector Gadget

Mark Andrews

as Writer in Inspector Gadget

Riz Ahmed

as Ford Prefect in The Hitchhiker's Guide to the Galaxy

Denis Villeneuve

as Director in The Hitchhiker's Guide to the Galaxy

Noel Fielding

as Zaphod Beeblebrox in The Hitchhiker's Guide to the Galaxy

Kit Harington

as Gwynplaine in The Man Who Laughs

Farren Blackburn

as Director in The Man Who Laughs

Dominic Purcell

as Harvey Bullock in Batman

Doug Jones

as Dr. Jonathan Crane in Batman

Shazad Latif

as Ra's Al Ghul in Batman

Jessica Barden

as Crazy Jane in Doom Patrol

Paul Blackthorne

as Perry White in Superman

Peter Capaldi

as Norman Burg in The Big O

Ed Asner

as Granny Goodness in Superman