• Victor Frankenstein as Sonic
  • Sparky as Tails
  • Mr. Bergermeister as Dr. Robotnik
  • Mr. Grumpy (from The Mr. Men Show) as Scratch
  • Mr. Stubborn (from The Mr. Men Show) as Grounder
  • Mr. Rude (from The Mr. Men Show) as Coconuts
  • Elsa Van Helsing as Breezie
  • Weird Girl as Miss Possum
  • Oogie Boogie (from The Nightmare Before Christmas) as Dr. Warpnik
  • Mr. Whiskers as Dr. Brandon Quark
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