Guest Stars Lauren Tom voices Amy Wong David Herman voices Fat-Bot David Herman voices Dean Vernon Tress MacNeille voices Guenther Lauren Tom voices Chrissy David Herman voices Niedermeyer Tress MacNeille voices Intercom Voice Tress MacNeille voices Dorm Girls Uncredited Danny Jacobs voices Additional Voices Frank Welker voices Guenther's Parents Frank Welker voices Hatless Guenther