Hey Arnold! is an American animated television series created by Craig Bartlett for Nickelodeon. The series aired from October 7, 1996 until June 8, 2004. The show features a fourth grader named Arnold and his friends, and the predicaments they encounter.
The show stars fourth grader Arnold, a boy who lives with his paternal grandparents, Phil and Gertrude, proprietors of the Sunset Arms boarding house. In each episode, Arnold often helps a schoolmate solve a personal problem, or encounters a predicament of his own. The show also focuses on Arnold's classmate, Helga, who often treats Arnold cruelly and bullies him constantly. However, a recurring theme of the show is the fact that Helga pretends to dislike Arnold to hide the fact that she is secretly in love with him.
Many episodes involve urban legends, often told by Arnold's best friend, Gerald. These episodes often feature over-the-top events such as those that involve superheroes or headless horsemen, among others.