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Charlie Adler
Sprout
Bruce Lanoil
Klaus/Onion #2
Corri English
Helga/Onion #4
Mark Klastorin
Big Kielbasa/Onion #3
Jerry Sroka
Jonny
Dee Bradley Baker
Penguin/Onion #1
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Released
Klasky-Csupo
Nickelodeon Animation Studio
Sean Roche
Writer
Michael Mullen
Director
Niko Meulemans
