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Cast

  • Sonic as George Beard
  • Tails as Harold Hutchins
  • Knuckles as Captain Underpants
  • Chris Thorndyke as Sulu the Hamster
  • Cheese as Crackers the Petrodactyl
  • Snively as Melvin Sneedly
  • Dr. Robotnik/Dr. Eggman as Mr. Krupp
  • Mama Robotnik as Mrs. Ribble
  • Scratch as Mr. Meaner
  • Grounder as Mr. Rected
  • Coconuts as Mr. Fyde
  • Breezie as Mrs. Anthrope
  • Fiona Fox as Mrs. Guiled
  • Mighty as Tim Bronski
  • Ray as Stevie Loopner
  • Amy Rose as Jessica Gordon
  • Mephiles as Dr. Diaper
  • Zavok as Captain Blunderpants
  • Metal Sonic as Evil George
  • Shadow as Evil Harold
  • Chaos 0 as Evil Sulu
  • Infinite as Professor Poopypants
  • Cosmo as Stephanie Yarkoff
  • Cluck as The Bionic Booger Boy
  • Uncle Chuck as Mr. Rustworthy
  • Vector as George's Dad
  • Vanilla as Harold's Mom
  • Cream as George and Harold’s Sister
  • Charmy as Harold's Grandpa
  • Saffron as George's Grandma
  • Sally, Bunnie and Dulcy as Zorx, Klax and Jennifer
  • Bocoe as Robo-George
  • Decoe as Robo-Harold
  • Bokkun as Dinosauar
  • Badniks as Other Kids

Version 2

  • Tails as George Beard
  • Chris Thorndyke as Harold Hutchins
  • Cheese as Sulu
  • Chocola as Crackers
  • Vector as Captain Underpants
  • Dr. Robotnik (AoStH)/Dr. Eggman as Captain Blunderpants
  • Dr. Robotnik (SatAM/SU) as Professor Poopypants
  • Decoe as Evil George Beard
  • Bocoe as Evil Harold Hutchins
  • Bokkun as Evil Sulu the Hamster
  • Silver as Melvin Sneedly
  • Shadow as Mr. Krupp
  • Rouge as Mrs. Ribbles
  • Breezie as Mrs. Anthrope
  • Robotnik Jr. as Mr. Meaner
  • Dr. Warpink as Mr. Rected
  • Sonic as Mr. Fyde
  • Knuckles as Tim Bronski
  • Snively as Stevie Loopner
  • Espio as Mr. Rustworthy
  • Cosmo as Jessica Gordon
  • Nelson Throndyke as George's Dad
  • Lindsey Throndyke as Harold's Mom
  • Chuck Throndyke as Harold's Grandpa
  • Ella Throndyke as George's Grandma
  • Amy Rose as George and Harold's Sister
  • Scratch as Robo-George
  • Grounder as Roboe-Harold

Version 3

  • Scratch as George Beard
  • Grounder as Harold Hutchins
  • Coconuts as Sulu the Hamster
  • Cluck as Crackers the Petrodactyl
  • Music Destroyer as Captai Underpants
  • Chris Thorndyke as Captain Blunderpants
  • Sonic as Evil George
  • Tails as Evil Harold
  • Knuckles as Evil Sulu
  • Silver as Melvin Sneedly
  • Dr. Robotnik as Mr. Krupp
  • Mama Robotnik as Mrs. Ribbles
  • Robotink Jr. as Mr. Meaner
  • Breezie as Mrs. Anthrope
  • Snively as Mr. Rected
  • Bokkun as Mr. Rustworthy
  • Antoine as Mr. Fyde
  • Amy as Zorx
  • Cosmo as Klax
  • Cream as Jennifer