Suggestions by @aaronkime

Patton Oswalt

as Mister Mxyzptlk in DCU

Michael Mando

as Mister Zsasz (Victor Zsasz) in DCU

Tramell Tillman

as Black Lightning (Jefferson Pierce) in DCU

Tang Wei

as Lady Shiva (Sandra Wu-San) in DCU

Dakota Fanning

as Lena Luthor in DCU

Jamie Lee Curtis

as Leslie Thompkins in DCU

David Harewood

as Lucius Fox in DCU

Marcus Johnson

as Martian Manhunter (J'onn J'onzz) in DCU

Julian Haig

as Killer Moth (Drury Walker) in DCU

Dave Bautista

as Kalibak in DCU

Luke Mitchell

as John Constantine in DCU

Joel Edgerton

as Jim Gordon in DCU

Odessa A'zion

as Jade (Jennie-Lynn Hayden) in DCU

Madelyn Cline

as Iris West-Allen in DCU

Sope Dirisu

as Icon (Arnus/Augustus Freeman) in DCU

Tom Holland

as Hourman (Rick Tyler) in DCU

Essie Davis

as Hippolyta in DCU

Shemar Moore

as Heat Wave (Mick Rory) in DCU

Anthony Hayes

as Harvey Bullock in DCU

Jessica Rothe

as Harley Quinn (Harleen Quinzel) in DCU