Suggestions by @alantiedman

Brian Cox

as Dr. Erdel in Martian Manhunter

Lance Reddick

as Martian Manhunter in Martian Manhunter

Jason Statham

as Black Mask in Batman Universe

Nicholas Hoult

as Hush in Batman Universe

Logan Lerman

as Red Robin in Batman Universe

Al Pacino

as Carmine Falcone in Batman Universe

Sabrina Carpenter

as Spoiler in Batman Universe

Morena Baccarin

as Catwoman in Batman Universe

Charles Dance

as Alfred Pennyworth in Batman Universe

Peter Mensah

as Killer Croc in Batman Universe

Cory Michael Smith

as The Riddler in Batman Universe

Jessica Chastain

as Poison Ivy in Batman Universe

Taron Egerton

as Red Hood in Batman Universe

Cameron Monaghan

as Joker in Batman Universe

Finn Wittrock

as Nigthwing in Batman Universe

Ciarán Hinds

as Steppenwolf in Alternate DCEU

Jason Momoa

as Kraven the hunter in Spider man and the sinister six

Derek Theler

as Carter Hall in New DC Universe

Morena Baccarin

as Selina Kyle in New DC Universe

Scott Adkins

as Bruce Wayne in New DC Universe