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Tony, Orlando, and Dawn (collectively known as the Hamsterdactyls) are the pets of George Beard, Harold Hutchins, Yesterday George Beard, and Yesterday Harold Hutchins. They are also the children of Crackers and Sulu.

They have hamster/Quetzalcoatlus voices in the Sound-O-Rama Audiobooks.


Previous History[]

The eggs were made due to Crackers mating with Sulu, thus the growth of the eggs.

Captain Underpants and the Tyrannical Retaliation of the Turbo Toilet 2000[]

The Hamsterdactyls hatched from their eggs when the Turbo Toilet 2000 knocked the treehouse again and again. They took a liking to Yesterday George Beard and Yesterday Harold Hutchins. However, they realized that the boys were in danger and destroyed the Turbo Toilet 2000.

Captain Underpants and the Sensational Saga of Sir Stinks-A-Lot[]

After Present Harold Hutchins and George Beard meet their future counterparts and their families, they return with them in the present timeline, meeting Crackers and Sulu's children. Adult George and Harold tell their younger selves to stay in the clubhouse and rest up since they have already been through a lot.

When Sir Stinks-A-Lot extracts the effects of the 3-D Hypno-Ring and super powers from Mr. Krupp, Captain Underpants is also erased in the process. Old George Beard and Old Harold Hutchins try to contact their younger selves telepathically; however, their younger selves are too busy sleeping to notice them. Fortunately, the Hamsterdactyls respond to the message and go to battle Sir Stinks-A-Lot, putting a stop to his madness in the city. Later, the Hamsterdactyls join the present George and Harold in their time travel adventure, hoping to save Crackers and Sulu from their deaths.


  • The name "Hamsterdactyls" is a misnomer, as the creatures are actually the offspring of a hamster and a Quetzalcoatlus, not a hamster and a pterodactyl.
  • Their names are a reference to Tony Orlando and Dawn, a 70s pop music group.
  • With their small rodent like bodies and long leathery wings, one could possibly mistake them for a species of bat.