Special Guest Stars Christine Baranski voices Herself Victor Garber voices Michael de Graaf Christian Siriano voices Himself Guest Stars Alex Désert voices Carl Carlson Maggie Roswell voices Helen Lovejoy Tony Rodriguez voices Julio Franco Dawnn Lewis voices Bernice Hibbert Tress MacNeille voices Luigi's Mother Kevin Michael Richardson voices Co-Pilot Pamela Hayden voices Employees Chris Edgerly voices Employees