Special Guest Stars John Autry II voices Monk Murphy Kathy Buckley voices Deaf Girl Guest Stars Pamela Hayden voices Milhouse Van Houten Kevin Michael Richardson voices Dr. Julius Hibbert Maggie Roswell voices Helen Lovejoy Eric Lopez voices Bumblebee Man Kevin Michael Richardson voices Bleeding Gums Murphy Tress MacNeille voices Activation Lady Dawnn Lewis voices Daly Night Dawnn Lewis voices Etta Pryor Chris Edgerly voices Deaf Man Eli Steele voices The Sky's the Limit Employee Co Starring Ian Mayorga voices Additional Vocals Hazel Lopez voices Additional Vocals Kaylee Arellano voices Additional Vocals