Green Goblin

Norman Osborn was the CEO of Oscorp, father to Harry Osborn and the supervillain known as the Green Goblin.

Meeting Peter Parker
Norman accompanied Harry when the latter was being dropped off by Charles to a school field trip. Harry requested for Charles to drive to the corner and Norman questioned this, noting that they were close to the entrance. Harry explained that he did not want to be seen in that type of car by public school students, and Norman asked him if he wanted him to trade in his car for Jetta just because Harry flunked out of each private school he had attended. Harry said it was not for him and Norman objected to this, telling Harry to never be ashamed of who he is. Harry asserted that he was not and tried to give an elaboration on his feelings before leaving the car. Harry greeted his best friend Peter Parker and Norman called for his son as he exited the car and held the latter's backpack. Harry thanked Norman and introduced him to Peter, the two shaking hands as Norman said that he had been told much about Peter by Harry, including that he was a "science wiz". Norman said that he was something of a scientist himself and Peter revealed that he had read all of Norman's research on nanotechnology. Norman asked Peter if he understood it, which the latter confirmed and mentioned that he wrote a paper on it. Norman called this impressive and assumed that Peter's parents were proud of him. Just then, the field trip instructor called for Peter and Harry to join the rest of the class. Norman and Peter shook hands once more, with Norman saying that he hoped to see Peter again before the latter and Harry walked away.

Becoming the Green Goblin
General Slocum visited Osborn Technologies and Mendel Stromm began to speak to Slocum after the latter stated his interest in seeing the progress report on human performance enhancers. Stromm mentioned the 800 percent increase in strength for the rodent subjects they had tested. Slocum asked if there were side effects, and when Stromm confirmed that there was one, Norman insisted aberration and subsequent trials had been successful. Stromm revealed violence, aggression, and insanity were the side effects and Norman replied that only happened during one test. Norman told Slocum that minus Stromm, the entire staff certified the product as being ready for human testing. Slocum asked Stromm for his opinion and the latter said they needed to take the whole thing back to formula, with Norman repeating Stromm's suggestion to the latter before Slocum called his name. Norman turned to him and Slocum warned that Norman only had two weeks to have a successful human trial for his performance enhancers, as Quest Aerospace had been given an authorization by the general to build a prototype of their exoskeleton design, or he would pull his funding and give it to Quest Aerospace.

That night, Norman was with Stromm as the former prepared to test the performance enhancers. Norman told Stromm to not be a coward as he readied the test, citing risk as being part of laboratary experiments. Stromm pleaded for Norman to give him two weeks to schedule a test with medical staff and a subject, Norman retorting that they did not have enough time and that you have to do things yourself. Norman removed his shirt as he instructed Stromm to get him the prochlorperazine as it began catalyization when the vapor hit the blood stream. Stromm complied, and Norman observed that humans have barely tapped the vastness of human potential despite forty thousand years of evolution. Norman drank it and was strapped to the machine before entering the chamber. The gas poured over Norman, who began shaking. A frightened Stromm called his name and saw Norman's pulse cease as he laid seemingly deceased. Stromm entered the chamber to check his pulse and began pushing his chest, Norman's pulse returning as his eyes opened and he grabbed Stromm by the throat. Norman said "Back to formula", a reference to what Stromm had told Slocum about the performance enhancers, and threw Stromm through the glass container. Norman then lunged in his direction.

Norman returned home and passed out on the floor, being found by Harry after he arrived home from school. Norman called Harry's name and told him that he did not remember what happened the previous night. An Oscorp employee then came into the room to inform Norman of Stromm's death, as well as the recent theft of the flight suit and glider. During a Quest Aerospace test, the Green Goblin attacked, killing the test subject as well as Slocum and other observers.

Harry's graduation
Norman attended the Midtown High graduation ceremony. He came up to Harry as the latter was telling Peter about their shared apartment. Norman admitted this was not the first time he had been proven wrong, congratulating him before turning his attention to Peter, who had received the Science Award. Norman told Peter that he knew this had been a difficult time for him but that he wanted Peter to try and enjoy the day as commencement was the end of one thing and the start of something new. Norman furthered that Peter was like a brother to Harry, reasoning that this made him family, and told him to give him a call if he ever needed anything.

Trivia

 * Of the five supervillains in the trilogy, Norman and Harry Osborn are the only ones to appear in all three movies.
 * Both Norman and Harry were impaled by their own glider, though Norman was impaled by trying to hurt Peter while Harry was impaled protecting him.
 * He is the first villain to kidnap Mary Jane and the only one who actively tries to kill her after doing this, as neither Doctor Octopus or Venom tried attacking her unprovoked while they were fighting Spider-Man.
 * With the release of Spider-Man: No Way Home, Norman is the most recurring villain of the Spider-Man, as he has appeared in four movies.