• Mordecai (from Regular Show) as Jimmy Neutron
  • Rigby (from Regular Show) as Goddard
  • William as Carl Wheezer
  • Henry as Sheen
  • Angelina as Cindy Vortex
  • Alice as Libby Folfax
  • Mandark (from Dexter's Laboratory) as King Goobot
  • Mojo Jojo (from The Powerpuff Girls) as Baby Eddie
  • Shannon (from Whatever Happened to Robot Jones) as Grandma Taters
  • Grim (from The Grim Adventures of Billy and Mandy) as The Junkman
  • Terrence (from Foster's Home for Imaginary Friends) as Eustace Strych
  • Eddy's Brother (from Ed, Edd n Eddy) as Professor Calamitous
  • Loulabelle (from I Am Weasel) as Beautiful Gorgeous
  • Numbuh 1 (from Codename: Kids Next Door) as Xixs
  • Numbuh 5 (from Codename: Kids Next Door) as Travaltron
  • Numbuh 2 (from Codename: Kids Next Door) as Tee
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