Regular Show: The Movie (2015)

Cast: J.G. Quintel, William Salyers, Sam Marin, Mark Hamill, Minty Lewis, Jason Mantzoukas, David Koechner, Roger Craig Smith, Ali Hillis, Kurtwood Smith

After a high school lab experiment goes horribly wrong, Mordecai and Rigby must go back in time to battle an evil volleyball coach in order to save the universe — and their friendship.…