Harry Osborn is created by Stan Lee and Steve Ditko. He first appeared in Marvel Comic's The Amazing Spider-Man #31, in the story called, If This Be My Destiny.
Harry Osborn is the son of Norman Osborn (the first Green Goblin). In Spider-Man 3, Harry avenges his fathers death and becomes the second Green Goblin. Using technology far greater than his fathers, and a board that will allow himself to get through narrow areas. Harry is equipped with Goblin Bombs, Goblin throwing knives, and much more. Harry was once the best friend of Peter Parker (Spider-Man), however now they are mortal enemies! Watch out web-head, Green Goblin is riding the skies.