• Percy as George
  • Duck as Harold
  • Thomas as Captain Underpants
  • James as Melvin Sneedly
  • Diesel as Mr. Krupp (Sir Topham Hatt can't be Mr. Krupp, Sir Topham Hatt is good and Mr. Krupp is bad)
  • Daisy as Mrs. Ribble
  • Elizabeth as Mrs. Anthrope
  • Diesel 10 as Proffessor Poopypants
  • Duncan as Dr. Diaper
  • Gordon as Tim Bronski
  • Henry as Stevie Loopner
  • Bulgy as The Bionic Booger Boy

and more

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