The Key to the Universe
Show: Regular Show --> Season: 8 - Season 8
AirDate: 11/10/2016
Runtime: 11
Voting: 10 (1)

Overview: Earl, an ancient sensei, begins training Pops for his fight with Anti-Pops, but Pops is not sure if he can or should go along with it.
Robert Englund
Anti-Pops (voice)
Feodor Chin
Earl (voice)