: This season explores the low point of Benson's relationship with the duo. In "Think Positive," his suppressed rage nearly destroys the park after he is banned from yelling.
: A fan-favorite episode where Rigby legally changes his name to something "cool," only to be hunted by a futuristic rock star. Character & World Development
: More focus is given to secondary characters. Muscle Man receives significant development in "Trucker Hall of Fame," which explores his relationship with his late father.