Suggestions by @whitedevil

Tom Hiddleston

as Edward "Nigma" Nashton in Gotham Knights: A Batman Family Story

Matthew Modine

as Dr. Victor Fries in Gotham Knights: A Batman Family Story

Adam Copeland

as Roman Sionis in Gotham Knights: A Batman Family Story

Dylan O'Brien

as Alberto Falcone in Gotham Knights: A Batman Family Story

Frank Grillo

as Carmine "The Roman" Falcone in Gotham Knights: A Batman Family Story

Nicolas Cage

as Salvatore Maroni in Gotham Knights: A Batman Family Story

Austin Butler

as Bruce Wayne/Joker in Gotham Knights: A Batman Family Story

Woody Harrelson

as Jervis Tetch in Gotham Knights: A Batman Family Story

Olivia Wilde

as Cressida Clarke in Gotham Knights: A Batman Family Story

Patrick Stewart

as Sebastian Clark in Gotham Knights: A Batman Family Story

Michael Chiklis

as Julian Day in Gotham Knights: A Batman Family Story

Aubrey Plaza

as Helena Bertinelli in Gotham Knights: A Batman Family Story

Maya Hawke

as Harper Row in Gotham Knights: A Batman Family Story

Madelyn Cline

as Stephanie Brown in Gotham Knights: A Batman Family Story

Kelvin Harrison Jr.

as Lucas "Luke" Fox in Gotham Knights: A Batman Family Story

Caleb McLaughlin

as Duke Thomas in Gotham Knights: A Batman Family Story

Dog

as Ace the Bat-Hound in Gotham Knights: A Batman Family Story

Jude Hill

as Damian Wayne in Gotham Knights: A Batman Family Story

Dave Bautista

as Edmund Dorrance Jr. in Gotham Knights: A Batman Family Story

Milla Jovovich

as Dr. Pamela Isley in Gotham Knights: A Batman Family Story