Suggestions by @masterlawdog

Ewan McGregor

as Obi-Wan Kenobi in Star Wars: Rebels

Alec Guinness

as Obi-Wan Kenobi in Star Wars: Rebels

Ian McDiarmid

as Emperor Palpatine in Star Wars: Rebels

Katee Sackhoff

as Bo-Katan in Star Wars: Rebels

Ian McElhinney

as General Dodonna in Star Wars: Rebels

Genevieve O'Reilly

as Mon Mothma in Star Wars: Rebels

Forest Whitaker

as Saw Gerrera in Star Wars: Rebels

Denis Lawson

as Wedge Antilles in Star Wars: Rebels

Forest Whitaker

as Saw Gerrera in Star Wars: Rebels

Clancy Brown

as Ryder Azadi in Star Wars: Rebels

Donald Glover

as Lando Calrissian in Star Wars: Rebels

Frank Oz

as Yoda in Star Wars: Rebels

Jimmy Smits

as Bail Organa in Star Wars: Rebels

Benedict Cumberbatch

as Thrawn in Star Wars: Rebels

Peter Serafinowicz

as Darth Maul (voice) in Star Wars: Rebels

Ray Park

as Darth Maul in Star Wars: Rebels

Guy Henry

as Wilhuff Tarkin in Star Wars: Rebels

Peter Cushing

as Wilhuff Tarkin in Star Wars: Rebels

Tom Hardy

as Agent Kallus in Star Wars: Rebels

Temuera Morrison

as Captain Rex in Star Wars: Rebels