Suggestions by @jahshaman

Sylvester Stallone

as Wildcat in The DCU

Theo Rossi

as Captain Cold in The DCU

Ewan Mitchell

as Joker in The DCU

Caleb Landry Jones

as Joker in The DCU

John Boyega

as Cyborg in The DCU

Jenna Ortega

as Raven in The DCU

Grace Van Dien

as Starfire in The DCU

Katheryn Winnick

as Black Canary in The DCU

Charlie Hunnam

as Green Arrow in The DCU

Rose Leslie

as Batgirl in The DCU

Glen Powell

as Green Lantern in The DCU

May Calamawy

as Wonder Woman in The DCU

Oliver Jackson-Cohen

as Batman in The DCU

Travis Fimmel

as Aquaman in The DCU

Peter Stormare

as Beta Ray Bill in Marvel Cinematic Universe

Vince Vaughn

as Sebastian Shaw in X-Men MCU

George MacKay

as Pyro in X-Men MCU

Cillian Murphy

as Professor X in X-Men MCU

Sophie Thatcher

as Rogue in X-Men MCU

Theo James

as Cyclops in X-Men MCU