Guest Stars H. Jon Benjamin voices Jimmy Pesto Jr. Bobby Tisdale voices Zeke David Herman voices Mr. Frond Brian Huskey voices Regular Sized Rudy Sarah Silverman voices Ollie Laura Silverman voices Andy John Roberts voices Jocelyn H. Jon Benjamin voices Peter Pescardero David Wain voices Courtney Molly Shannon voices Millie Stephanie Beatriz voices Chloe Barbash Larry Murphy voices Lenny DeStefano Kristen Schaal voices Alien Baby #2 Stephanie Beatriz voices Alien Baby H. Jon Benjamin voices Sam H. Jon Benjamin voices Alien Baby #3 Brian Huskey voices Parent