Harold Theopolis Osborn is a character appearing in American comic books published by Marvel Comics, commonly in association with the superhero Spider-Man. Created by Stan Lee and Steve Ditko, the character first appeared in The Amazing Spider-Man #31 (December 1965).
Harry is the best friend of Peter Parker (Spider-Man's alter ego) and Flash Thompson, one of the ex-boyfriends of Mary Jane Watson, the son of Norman Osborn, the husband of Liz Allan and the father of Normie Osborn and Stanley Osborn. He is the second character to assume the Green Goblin alias while one of his clones was amongst the many users of the Iron Patriot armor as the superhero American Son. An artificial intelligence (A.I.) copy, known as the A.I. Harry Osborn, is also the creator of the clones Gabriel and Sarah who are both later revealed to be operating as his demonic revenant Kindred under the Harry A.I.'s command.