The MCU is introducing new antagonists in Phase 4 and setting up major threats for Phase 5, but the franchise is still missing what could be the Avengers’ most important villain. After the end of the Infinity Saga and the defeat of Thanos, Earth and the rest of the universe are living in a time of relative peace, but it may not last for long. In addition to the dangerous multiversal events caused by Loki, Spider-Man: No Way Home, and Doctor Strange in the Multiverse of Madness, there are also “human-level” threats that could soon become a problem for the remaining Avengers and the MCU's new heroes – and one character could summarize this type of threat very well
Unlike the first three phases of the MCU, which saw most of the stories revolve around the Infinity Stones and the inevitable confrontation with Thanos, MCU Phase 4 still doesn't have a set north. This has been the most plural Phase of the franchise so far, largely due to the interaction between the movies and Disney +’s MCU shows. Thus far, there's not even been confirmation of an Avengers 5 project, whether it's a release date or what the Avengers lineup will be.
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In any case, many of the current and potential storylines in MCU Phase 4 and 5 would benefit greatly from having Norman Osborn as a prominent character. In the comics, several of the sagas that are serving as inspiration for the MCU involved the Spider-Man villain, either in the main antagonist role or as a secondary player. For example, in the comics, Norman had his own version of the Illuminati, a group that will be featured in Doctor Strange 2. The Disney+ series Armor Wars would also be most fitting for Osborn, as he was
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