• Sheldon J. Plankton (from SpongeBob SquarePants) as Oscar the Grouch
  • Inch the Inchworm as Slimey the Worm
  • Charlie Brown (from Peanuts) as Trash Gordon
  • Taz (from Looney Tunes), Swiper (from Dora the Explorer), Crunch the Shark, Bushy the Lion, Swampy the Alligator, Spinner the Spider, Hissy the Snake and Sly the Fox as Grouches

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