Guest Stars H. Jon Benjamin voices Jimmy Pesto Jr. Bobby Tisdale voices Zeke David Herman voices Mr. Frond Jenny Slate voices Tammy Brian Huskey voices Regular Sized Rudy John Roberts voices Jocelyn H. Jon Benjamin voices Ms. LaBonz H. Jon Benjamin voices Speedo Guy Melissa Bardin Galsky voices Ms. Jacobson Stephanie Beatriz voices Chloe Barbash Sarah Baker voices Ms. Selbo Larry Murphy voices Science Teacher Daniel Van Kirk voices Flips Whitefudge Brooke Dillman voices Shelly David Herman voices Martin Melissa Bardin Galsky voices Receptionist Gabby Sanalitro voices Isabella