Regular Show Season 7 Episode 21 Gymblonski ( Air Date 2016-03-19 ) Genre Animation, Comedy, Action & Adventure, Sci-Fi & Fantasy category. Overview "Rigby's high school nemesis returns and threatens to ruin his chances at passing gym class and graduating high school.".
Regular Show Season 7 Episode 21 Gymblonski
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- Watch: Regular Show Season 7 Episode 21 Gymblonski on CWR-CRB
- Stars: J.G. Quintel, William Salyers, Mark Hamill, Sam Marin, Minty Lewis, Matthew Mercer, Vanessa Marshall
- Director: Alicia Parkinson, Carolyn Johnstone, Sean Szeles, Tony Orozco, Paula Spence, J.G. Quintel, Matt Price, J.G. Quintel, Albert Fox, Linda Barry, John Enroth, Danielle Adrias, Ryan Slater, Anna Granfors, Conrad Montgomery, Tony Tedford, Krandal Crews, Robert Alvarez, Robert Serda, Kris Zimmerman, Antonio Gonella, Vicki Casper, Sandy Benenati, Bob Cavin III, Timothy J. Borquez, Jeff Hutchins, Bobby Gibis, Mark Mothersbaugh, Brian A. Miller, Rob Sorcher
