Suggestions by @jeanpaulvalley

Brian Tyler

as Composer in Red Hood : Gladiator Fight

Johnny Depp

as The Joker (Flashback) in Red Hood : Gladiator Fight

Jean-Claude Van Damme

as Jean-Paul Valley/Azrael in Red Hood : Gladiator Fight

Courtney Eaton

as Cassandra Caine/BlackBat in Red Hood : Gladiator Fight

Aaron Taylor-Johnson

as Richard "Dick" Grayson/Nightwing in Red Hood : Gladiator Fight

Evan Rachel Wood

as Katherine "Kate" Kane/Batwoman in Red Hood : Gladiator Fight

David Suchet

as Oswald Chesterfield Cobbelpot/Penguin in Red Hood : Gladiator Fight

Triple H

as Sir Edmund Dorrance/King Snake in Red Hood : Gladiator Fight

Gabriel Luna

as Eduardo/El Flamingo in Red Hood : Gladiator Fight

Sofia Boutella

as Copperhead in Red Hood : Gladiator Fight

Aldis Hodge

as Eric Needham/Black Spider in Red Hood : Gladiator Fight

Kaya Scodelario

as Jade Nguyen/Cheshire in Red Hood : Gladiator Fight

Omari Hardwick

as Ben Turner/Bronze Tiger in Red Hood : Gladiator Fight

Margot Robbie

as Doctor Harleen Quinzel/Harley Quinn in Red Hood : Gladiator Fight

Vin Diesel

as Waylon Jones/Killer Croc (Voice) in Red Hood : Gladiator Fight

Javier Bardem

as Bane (Voice) in Red Hood : Gladiator Fight

Robert Maillet

as Bane (Physique) in Red Hood : Gladiator Fight

Stephen Lang

as Slade Wison/Deathstroke in Red Hood : Gladiator Fight

Douglas Booth

as Jason Todd/Red Hood in Red Hood : Gladiator Fight

Rian Johnson

as Director in And Then There Were None