Suggestions by @stevepwayne914

Benedict Cumberbatch

as Clifford Devoe in The Flash

John Boyega

as Victor Stone in The Flash

Eduardo Franco

as Cisco Ramon in The Flash

Emma Roberts

as Louise Lincoln in The Flash

Emma Mackey

as Caitlin Snow in The Flash

Eme Ikwuakor

as Mack Nathan in The Flash

Lili Reinhart

as Patty Spivot in The Flash

Courtney B. Vance

as Doctor Silas Stone in The Flash

Sam Worthington

as Captain Boomerang in The Flash

Ethan Hawke

as Darryl Frye in The Flash

Naomi Watts

as Nora Allen in The Flash

Jason Bateman

as Henry Allen in The Flash

Andy Serkis

as Gorilla Grodd in The Flash

Lily James

as Iris West in The Flash

Antony Starr

as Reverse Flash in The Flash

Lucas Till

as The Flash in The Flash

Joe Keery

as Kevin 11 in Ben10: Race Against Time

Joe Keery

as Ben 10 in Ben10: Race Against Time

Pedro Pascal

as Floyd Lawton in James Gunn's DC Cinematic Universe

Jensen Ackles

as Slade Wilson in James Gunn's DC Cinematic Universe