Suggestions by @midnight

Russell Crowe

as Joe West in The Flash

Andy Bean

as Malcolm Thawne in The Flash

Jay Ryan

as Malcolm Thawne in The Flash

Mark Hamill

as Mole Man in Fantastic Four (MCU)

Naomi Watts

as Nora Allen in The Flash

Mckenna Grace

as Brainstorm in Fantastic Four (MCU)

Jacob Tremblay

as Powerhouse in Fantastic Four (MCU)

Nikolaj Coster-Waldau

as Doctor Doom in Fantastic Four (MCU)

Ed Westwick

as Malcolm Thawne in The Flash

Noah Schnapp

as Thaddeus Thawne II in The Flash

Jacob Tremblay

as Bart Allen in The Flash

Daniel Radcliffe

as Hartley Rathaway in The Flash

Katheryn Winnick

as Lisa Snart in The Flash

Kevin Durand

as Mick Rory in The Flash

Michael C. Hall

as Leonard Snart in The Flash

Matthew McConaughey

as Eobard Thawne in The Flash

Idris Elba

as Jay Garrick in The Flash

Thomas Doherty

as Wally West in The Flash

Billy Crudup

as Henry Allen in The Flash

Emma Watson

as Iris West in The Flash