Fan Casting Rigby in Regular Show: Lost Tapes

Rigby married Eileen and started a large family with her. But long before that, after seeing Eileen’s plans for the next 25 years of her life, Rigby decided to go back and finish high school to get his diploma since back when he and Mordecai were teenagers, they got expelled from high school for destroying the school’s science lab. Rigby tried to go back and finish high school once before, but eventually, he dropped out. But this time, Rigby stuck through it and graduated from high school after having to only need to pass 3 classes in order to graduate: geology, foreign language, and PE. To pass his geology class, Rigby scaled the wall of a geode cave. To pass his foreign language class, Rigby traveled China to help a class there learn English. And finally, to pass his PE class, Rigby beat his old high school bully, Francis Jablonski (the now substitute gym teacher at the school), at Food Run, a takeout food racing game in which 2 teams of 2 participants order from the same takeout restaurant and have to race there to pick up the food and the first team to cross the finish line with the food in hand wins.