Guest Stars Michael Rivkin voices Mr. Galvin Betsy Sodaro voices Kim Mitch Watson voices Spitsy Chandni Parekh voices Jenny Ryan W. Garcia voices Mr. Rosa Todd Haberkorn voices Artur Charlie Schlatter voices Spencer Chandni Parekh voices Kathleen Debra Wilson voices Artur's Mom Debra Wilson voices 7th Grade Girl Charlie Schlatter voices Man Betsy Sodaro voices Old Woman Todd Haberkorn voices Male Guests Todd Haberkorn voices Kid Todd Haberkorn voices Artur's Dad Ben Giroux voices French Narrator Ben Giroux voices Peter Chandni Parekh voices Clock Girl Chandni Parekh voices Bridesmaid Chandni Parekh voices Boss Lady Daniel MK Cohen voices Singing Kid Daniel MK Cohen voices Male Guest #2 Bryce Charles voices Enthusiastic Kid Bryce Charles voices Stylgravian 3 Bryce Charles voices Bride Arnie Pantoja voices Rockstar Arnie Pantoja voices Guy in the Bathroom Arnie Pantoja voices Science Nerd Ryan W. Garcia voices Groom