Hey Arnold! is an American animated television series created by Craig Bartlett for Nickelodeon. The show centers on a fourth grader named Arnold, who lives with his grandparents in an inner-city boarding house. Episodes center on his experiences navigating big city life while dealing with the problems he and his friends encounter.Bartlett's idea for the show is based on a minor character named Arnold whom he created while working on Pee-wee's Playhouse.