Suggestions by @opporan

John DeSantis

as Prince Xizor in Shadows of the Empire: A Star Wars Story

John Williams

as Composer in Plagueis: A Star Wars Story

Stephen Lord

as Cosinga Palpatine in Plagueis: A Star Wars Story

Ian McDiarmid

as Sheev Palpatine in Plagueis: A Star Wars Story

George Lucas

as Director in Plagueis: A Star Wars Story

Josh Brolin

as Darth Plagueis in Plagueis: A Star Wars Story

Tzi Ma

as Darth Vindican in Star Wars: The Old Republic

Joaquin Phoenix

as Valkorion in Star Wars: The Old Republic

David Bowers

as Darth Malgus in Star Wars: The Old Republic

Zackary Arthur

as Luke Skywalker in Kenobi: A Star Wars Story

David Prowse

as Darth Vader in Kenobi: A Star Wars Story

Sam Witwer

as Starkiller in The Adventures of Han Solo

Jared Gilmore

as Ezra Bridger in Kenobi: A Star Wars Story

George Lucas

as Director in Kenobi: A Star Wars Story

George Lucas

as Writer in Star Wars: Knights of the Old Republic

Scarlett Johansson

as Catwoman in The Batman

Toby Jones

as The Penguin in The Batman

Michael Gambon

as Alfred Pennyworth in The Batman

Neil Patrick Harris

as The Riddler in The Batman

Gary Oldman

as Darth Nihilus in Star Wars: Knights of the Old Republic