Guest Stars Lars Mikkelsen voices Grand Admiral Thrawn Steve Blum voices Imperial Officer Robin Atkin Downes voices Stormtrooper #1 Freddie Prinze, Jr. voices Stormtrooper #2 Dave Filoni voices Stormtrooper #3 André Sogliuzzo voices Captain Slavin Catherine Taber voices Numa Robin Atkin Downes voices Cham Syndulla Dave Filoni voices Scout Trooper Corey Burton voices Gobi Glie