Suggestions by @dylanemery

Timothy Spall

as Oswald Cobblepot in DCEU

David Sobolov

as Gorilla Grodd in DCEU

Corey Hawkins

as John Stewart in DCEU

Joivan Wade

as Victor Stone in DCEU

John Wesley Shipp

as Jay Garrick in DCEU

Rhona Mitra

as Mercy Graves in DCEU

Emmanuelle Chriqui

as Lana Lang in DCEU

Ruby Rose

as Kate Kane in DCEU

Elizabeth Tulloch

as Lois Lane in DCEU

Charlize Theron

as Selina Kyle in DCEU

Melissa Benoist

as Kara Zor-El in DCEU

Grant Gustin

as Barry Allen in DCEU

Russell Crowe

as Jor-El in The Batman/Superman: World's Finest

Grant Morrison

as Writer in The Batman/Superman: World's Finest

Sam Raimi

as Writer in The Batman/Superman: World's Finest

Melissa Benoist

as Kara Danvers in The Batman/Superman: World's Finest

Hans Zimmer

as Composer in The Batman/Superman: World's Finest

Rick Pasqualone

as SCU Lt. Dan Turpin in The Batman/Superman: World's Finest

Chris Colfer

as Jimmy Olsen in The Batman/Superman: World's Finest

Brenton Thwaites

as Dick Grayson in The Batman/Superman: World's Finest