Suggestions by @rogeliopatt

Dominic Purcell

as Mick Rory in The flash:

Dominic Pace

as Mick Rory in The flash:

Crispin Glover

as Leonard Snart in The flash:

Wentworth Miller

as Leonard Snart in The flash:

Sarah Paulson

as Nora allen in The flash:

Kenneth Branagh

as Henry Allen in The flash:

John Schneider

as Henry Allen in The flash:

Wilson Bethel

as Eobard Thawne in The flash:

Antony Starr

as Eobard Thawne in The flash:

Melissa Fumero

as Iris West in The flash:

Molly C. Quinn

as Iris West in The flash:

Jane Levy

as Iris West in The flash:

Andrew Garfield

as Barry Allen in The flash:

Lucas Till

as Barry Allen in The flash:

Grant Gustin

as Barry Allen in The flash:

Ben Stiller

as Jim Carrey in Dream Actor / Actress-Actor / Actress Collaborations

Dominic Purcell

as Heat Wave in The Flash

KJ Apa

as Wally West in The Flash

Melissa Fumero

as Íris West in The Flash

Wentworth Miller

as Captain Cold in The Flash