Phantom Blue Ball/Cameos


 * Newly created Oedekerk character The Thumb from Thumb Wars is seen briefly licking a giant ice cream cone.


 * Woody Woodpecker made a cameo when Agent Tommy Clark hit the players.


 * Jimmy Neutron made a cameo appearance when Agent Jackson Robinson hit Mary's head.


 * Bart Simpson made a cameo when Agent Mickey Moore hit the ground.


 * When Agent Lois watched a Max Fleischer's Cartoon Capers VHS, Kang and Kodos appear in a dream sequence.


 * Bugs Bunny made a cameo when Agent Rob watched The Wizard of Oz VHS.


 * When Agent James watching a fictional show Wombats!, Elmer Fudd, Tweety and Sylvester made a cameo appearance.


 * Betty Boop and Little Audrey made a cameo when Agent Shirley Beck hit the trash can.


 * As the credits scrolled, the agents' completed film Mystery Manners is shown. Little Lulu and Casper walks over.