Suggestions by @superbat

Bryan Cranston

as Lex Luthor in What if... the DCEU started in 2005?

Zachary Levi

as Shazam in What if... the DCEU started in 2005?

Pierce Brosnan

as Kent Nelson in What if... the DCEU started in 2005?

Aldis Hodge

as Carter Hall in What if... the DCEU started in 2005?

Taylor Swift

as Kara Zor-El/Kara Dannvers in What if... the DCEU started in 2005?

Emilia Clarke

as Mera in What if... the DCEU started in 2005?

Alexandra Daddario

as Zatanna Zatara in What if... the DCEU started in 2005?

Jurnee Smollett

as Dinah Lance in What if... the DCEU started in 2005?

Harry Lennix

as J'onn j'onnz in What if... the DCEU started in 2005?

Ray Fisher

as Victor Stone in What if... the DCEU started in 2005?

Josh Brolin

as Jonah Hex in What if... the DCEU started in 2005?

Keanu Reeves

as John Canstantine in What if... the DCEU started in 2005?

Charlie Hunnam

as Oliver Queen in What if... the DCEU started in 2005?

Lucas Till

as Barry Allen in What if... the DCEU started in 2005?

Jensen Ackles

as Hal Jordan in What if... the DCEU started in 2005?

Bryan Cranston

as Lex Luthor in Superman: The Movie (2008)

Jensen Ackles

as Hal Jordan in What if... the DCEU started in 2005?

Lucas Till

as Barry Allen/The Flash in What if... the DCEU started in 2005?

Jason Momoa

as Arthur Curry in What if... the DCEU started in 2005?

Jensen Ackles

as Hal Jordan in What if... the DCEU started in 2005?