Harry Osborn

Harry's had a tough life. When his mother died, his father Norman had to be the single parent, mother and head of an entire industry. Harry often got neglected, and he never (or rarely) received any love from his father. Despite all of that, Harry still worshipped his father. When Norman was doing some experimenting on Mendell Stromm's power formula, Harry, as a very young child, accidently mixed up some ingredients, which caused the explosion that permitted Norman to turn into the Green Goblin. As a teenager, he'd befriend Gwen Stacy. He'd enter Empire State University where he would meet Flash Thompson and Peter Parker for the first time. He'd quickly befriend Flash, and start to annoy Pete, but when Harry starts having 'heart-to-heart' conversations about his past with Peter, they would quickly develop into best friends. Later on, Norman would pay rent for an apartment for Peter and Harry in Manhattan when the two are in college.

Harry would try to catch Mary Jane's attention sine he was very interested in her. They would become a couple, but in the end, they'd break up, because she wasn't really interested in Harry. She really had her eye on Peter (who was dating Gwen, at the time). Harry, wanting to forget about his deep love for Mary Jane, took LSD. The day that Norman "died", he'd follow Peter to one of his father's wharehouses, and he'd take off the GG costume off of his father in order to save the 'Osborn' name. When Peter was taking a shower, Harry would find Peter's Spidey costume and he'd discover his best friend's secret. He'd become the Green Goblin to attempt to avenge his father's death. He would be defeated by Spidey and sent to prison. There, Harry would then have periods of amnesia that blocked out his Goblin ID, but they always kept ressurfacing. Harry would see a psychiatrist, Bart Hamilton. Bart would use hypnosis to help Harry get on with life but what he would discover was the dark secret of the Osborn family, and the true identity of Spider-Man. Hamilton would learn all about GG's hide-outs and weapons, thus he will become the 3rd Goblin. It did not last as he was killed in a battle with Spidey. But the end result of that, was Harry being knocking unconscious which would erase all his knowledge of ever being the Goblin (or his father being the villain) and the identity of Spider-Man.
Harry would then live a normal life for a long time since he doesn't remember that Peter is Spider-Man, his father was the Goblin or even that he was the Goblin. He'd take over his father's business, Osborn Industries. He'd marry Liz Allan and she would give birth to their only son, Norman Osborn. During Inferno, when his family is in danger from the Hobgoblin (Jason Macendale), he was forced to dawn his father's Green Goblin costume. This time as a good guy. Harry would then try to redeem his father's name by becoming a super-hero, but Spidey would convince him to do otherwise. Shortly thereafter, he'd start to get visions of his father telling him to become "more of a man". His mind would snap. He would become the Goblin once more, this time as a villain. He couldn't manage to kill Peter. Harry was furious at that, and left. When they would next meet, Harry would have had tested his new and improved Goblin formula. Somwhere around that time, he would hire the Chameleon to build robots of Richard and Mary Parker, who would supposed to find out Spidey's secret ID, but Harry would do this only to infuriate Peter. Harry would then be put in the Vault (a prison for super-heroes). Harry would get out of the Vault. But when he'd return, his plan to kill Spider-Man, failed when he realized that he couldn't kill Peter, no matter what. He saved Peter's life, but the serum that Harry took ended up by killing him.