Suggestions by @brenosilvacosta

James Marsden

as Mento in Doom Patrol (2000)

Owen Wilson

as Invisible man in Doom Patrol (2000)

Thomas Jane

as Robotman in Doom Patrol (2000)

John Hurt

as Niles Caulder in Doom Patrol (2000)

David Bowie

as Lucifer Morningstar in Constantine (1998)

The Justice Society

as The X-men Counterpart in Constantine (1998)

Kiefer Sutherland

as Wolverine (live-action) in Casting a random character every saturday #30: Wolverine

Ben Affleck

as Cyclops (live-action) in Casting a random character every saturday #40: Cyclops

Guillermo del Toro

as Director in Constantine (1998)

Donal Logue

as Gaz Lester in Constantine (1998)

Arly Jover

as Ellie in Constantine (1998)

Udo Kier

as First of the Fallen in Constantine (1998)

Rachel Weisz

as Kit Ryan in Constantine (1998)

Stephen Dorff

as Chas Chandler in Constantine (1998)

Kris Kristofferson

as Brendan Finn in Constantine (1998)

Clive Owen

as John Constantine in Constantine (1998)

Jonny Lee Miller

as John Constantine in Justice League (2000s)

Paul Bettany

as John Constantine in Justice League (2000s)

Nathan Fillion

as Steve Trevor in Justice League (2000s)

Thomas Jane

as Captain Atom in Justice League (2000s)