Crackers is a supporting character in Captain Underpants. She was a female Quetzalcoatlus adopted by George and Harold during their first escapade backward in time. She was mistaken for a Pterodactyl by the boys (and was initially believed to be male before she laid eggs in the tenth book) who was thought dead after sacrificing herself to prevent Tippy Tinkletrousers from destroying the planet. The series ends with George and Harold using the Robo-Squid suit in an attempt to save her and Sulu from this fate.
Crackers appears in All Star Smashers as a Support Spirit, as an Advanced class, where you must fight Harry Hill at Weewoo Warehouse as a character of your choosing to obtain her. When fighting Harry, he will favour using his down special move, will have multiple jumps, and will have increased air speed.
- Completing Crackers' Spirit Battle will also obtain the Moon Pig.