Harry Osborn was a rich kid born as the only son of industrialist Norman Osborn, who was mostly neglected by Osborn and his alcoholic mother. He eventually met Peter Parker in public school. Despite their differences, the two bonded; Harry improved Peter's social status, and Peter helped Harry with his homework. He also had a brief romantic relationship with Peter's soon-to-be girlfriend, Mary Jane Watson.
Harry's father, Norman Osborn, was an industrialist who created the Oz Formula, an experimental solution intended to turn ordinary humans into superhumans. When a spider injected with the Oz Formula bit Peter, he gained superhuman strength and agility and secretly became Spider-Man. Under the pretence of fearing for Peter's health, Norman took a sample of Peter's blood, and realized that Oz had made him stronger. Norman subjected himself to the Oz Formula, becoming a hideous demonic monster: the Green Goblin.
Insane, Norman attacked his family and destroyed his house, killing his wife and almost killing his son. The next day, the Goblin attacked the school but was stopped by Spider-Man. Peter believed that the Goblin had come for him, but Harry said that his father had come to kill him. Harry was then taken into custody and sent to live with his uncle.
When Harry later came back, he was once again living with his father and was brainwashed by Miles Warren into believing that his mother had died in a freak accident so that his father could better control him. He later walked in on a fight between the Green Goblin and Spider-Man, and literally stabbed his own father in the back with a shard of glass from a shattered window pane, reverting the creature back into his father. Harry was taken into custody again, but this time by S.H.I.E.L.D..
Later, Norman once again escaped and teamed up with Spider-Man's old rogues to siege the White House. Harry was used by Nick Fury to negotiate with his father. It almost worked as Harry reached out to his father, but a trigger-happy Iron Man blasted Osborn with his DNA cannon. His genetic structure rapidly went out of control. Norman lashed out in blind fury, only to be gunned down by soldiers right in front of Harry.
Traumatized, Harry vengefully promised to Peter he would kill everyone Harry knew to be involved in the incident. Harry returned to school, seemingly back to normal, but Peter was suspicious. Harry blamed Peter for stealing his girlfriend Mary-Jane and later told her that Peter killed his father.
Through the hypnotic therapy he had Harry under for years, Norman Osborn had planted a post-hypnotic suggestion in the form of his henchman, Shaw. 'Shaw' took Harry to an OsCorp bunker in New Jersey, where there were reserves of the Oz Serum.
Later, Peter (as Spider-Man) confronted Harry, demanding to know why he had told Mary Jane that he killed his father. Shaw then provoked Harry to unleash his hidden abilities. Harry burst into flame, transforming into the Ultimate version of the Hobgoblin. 'Shaw' goaded the mutated Harry to battle Spider-Man, but after a lengthy battle, the Hobgoblin broke down and begged Peter to kill him. Peter tried to help Harry, when the 'Shaw' persona took over once again and attacked Peter.
S.H.I.E.L.D. arrived and Harry attacked them, trying to provoke a lethal counter attack. He was promptly shot down, to Peter's horror. Spider-Man then attacked Nick Fury before leaving. It later turned out that Harry was not dead, just seriously wounded.
He reappeared in the wake of his father's escape and returned to the pubic spotlight. Carol Danvers, acting as head of S.H.I.E.L.D, used him as a tool broadcasting a staged press conference to Peter's house, where his father currently was, where he stated that his father was a cruel, vicious monster, and a murderer, to which Norman was not pleased. Norman changed into the Green Goblin and made his way to the Triskelion before Harry could be taken to safety. He was followed by Peter. Harry changed into the Hobgoblin to protect himself and the S.H.I.E.L.D. operatives. He viciously fought his father, but was cruelly beaten, reverting him to human form. Norman did not notice this, however, and promptly beat him to death. Shocked by what he had done, Norman changed back to human form and shook the lifeless body of his son. He then asked the S.H.I.E.L.D. soldiers to kill him, which they gladly did.
The next day in school, Peter gave a speech honoring Harry and saying that he was a true friend and a hero.
The Oz Formula, mutated Harry Osborn into a monstrous, Goblin-like creature like his father, which granted him superhuman abilities such as:
- Superhuman Strength: The Hobgoblin, after injecting formula, become super-humanly strong. Harry, as the Hobgoblin, can easily overpower humans by lifting them up with one hand or by hurling them around. He and can also lift extremely heavy objects, crush and break through wood panels and templates, bend metal, and can punch through glass without gaining injury.
- Superhuman Speed: The Hobgoblin, thanks to the Oz Formula, can run and operate at superhuman speeds. His overall body equilibrium is also heightened although he is not nearly as fast as speedsters. For example, with his speed, he can outrun vehicles.
- Superhuman Stamina: The Hobgoblin, thanks to the Oz Formula, can operate or maintain his movements for prolonged periods of time without getting tired or weary in the process.
- Superhuman Durability: The Oz Formula also fortified all of Harry's bodily tissues, making them far tougher and more resistant to injury than normal humans. While Harry can be injured by something along the lines of a knife or small, conventional bullets composed of conventional material, he is very resistant to great impact forces and blunt trauma. He can withstand powerful impacts, such as falling from several stories or being repeatedly struck by a superhuman enemy, that would severely injure or kill a normal human with little to no injury to himself.
- Regenerative Healing Factor: If The Hobgoblin, does sustain injury, his body's increased metabolism allows him to heal damaged tissue much faster and more extensively than a normal human is capable of. he can heal from injuries that would prove lethal to an ordinary human.
- Superhuman Agility: The Hobgoblin's agility, balance, and bodily coordination are enhanced to levels beyond the natural physical limits of the finest human athlete.
- Superhuman Reflexes: His reflexes are similarly enhanced and are superior to those of the finest human athlete.
- Pyrokinesis: The Hobgoblin can generate fiery bolts of energy from his hands, which he uses as weapons which can explode like bombs. A differing trait that separates his from Norman's goblin form, is the ability to immolate himself, wreathing his body in his own flames.
- Possible Immortality: Harry's father, Norman, motioned that immortality is a side-effect of the Oz Formula, as Harry had the Oz Formula in his DNA, it means that he also had such power.
- Miles Morales: Ultimate Spider-Man #6 revealed that the OZ Formula grants its users immortality, indicating the possibility that Harry could still be alive.
- 28 appearance(s) of Harold Osborn (Earth-1610)
- 1 appearance(s) in handbook(s) of Harold Osborn (Earth-1610)
- 1 minor appearance(s) of Harold Osborn (Earth-1610)
- 6 mention(s) of Harold Osborn (Earth-1610)
- 12 image(s) of Harold Osborn (Earth-1610)
- 2 quotation(s) by or about Harold Osborn (Earth-1610)