Earl is a recurring character of Regular Show who debuted in the eighth season episode "The Ice Tape". He is an old teacher the crew meet in space sent to train Pops for his confrontation with Anti-Pops. He is shown to be immortal since he has the tattoo of the each previous Chosen One in his entire body.
Earl is an elderly man with a long white moustache. When he was younger, he had black hair and wore a red belt and black pants. He also has tattoos all over his body for every time Pops and Anti-Pops battle.
Earl is quite strict and impatient, and can be quite hot-tempered. He is also shown to have a gentle side, as he tells Pops they will all be there for him.