Marvel has been announcing a slew of returning characters for its upcoming Spider-Man 3Reports state that Andrew Garfield will return as Peter Parker and Charlie Cox as his Netflix character Daredevil. This follows the return of J.K. Simmons as J. Jonah Jameson during the mid-credit sequence of Spider-Man: Far From Home when he revealed that Peter Parker was Spider-Man to the world in a truly jaw dropping moment. There has already been speculation that the Sinister Six will appear in the MCU, and J. Jonah Jameson may actually be directly responsible for introducing the villains as a ploy against Spider-Man.

Two members of the Sinister Six have already appeared in Marvel Cinematic Universe Spider-Man films, as Vulture (Michael Keaton) was the primary antagonist of Spider-Man: Homecoming and Mysterio (Jake Gyllenhaal) was the antagonist in Far From Home. Two other members of the Sinister Six are set to appear in Spider-Man 3Electro (Jamie Foxx) from The Amazing Spider-Man films and Doc Ock (Alfred Molina) from Sam Raimi'Spider-Man 2. That brings the total up to four members of the team already assembled.

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The theory surrounding the introduction of the Sinister Six is further solidified with Vulture's appearance in the upcoming Morbius film and the upcoming Kraven film, both of which bring the number up to five members total. All of these appearances could potentially confirm the arrival of the Sinister Six in the MCU.

These villains seem capable of assembling without the help of J. Jonah Jameson, but evidence suggesting he's behind the connection still stands. Like the aforementioned characters of the Sinister Six, Jameson is probably from across the multiverse as well, and if so, he's likely one of the first multiverse travelers to arrive. It would make sense that he is gathering the villains to band together against Spider-Man, because he did something similar in the comics.

In Amazing Spider-Man #25, Jameson paid inventor Professor Spencer Smythe to capture and destroy Spider-Man using a robot called the Spider Slayer. While Smythe is the inventor of the robot, Jameson pays for his services and wants to be the one to get credit for the capture of the hero. While Spider-Man is temporarily captured by the robot, he escapes before Jameson can unmask him, maintaining his secret identity from his boss at the Daily Bugle. This comic story could serve as inspiration for the MCU's Jameson to compile the Sinister Six and direct them towards Peter Parker.

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While it is likely that the MCU's Jameson is the same as Raimi's Jameson, there are some stark differences. While not the most affectionate of people, Raimi's Jameson clearly cares about and respects Peter Parker. It's unlikely that that version of Jameson would reveal Parker's identity like he did in the MCU. In Spider-Man, when Green Goblin attacked the Daily Bugle and asked for the identity of Spider-Man's photographer, Jameson lied without hesitation to defend Peter from the villain. Additionally, in Spider-Man 3, Jameson ultimately sided with Peter over Eddie Brock despite the fact that Brock's fraudulent work better suited Jameson's narrative for an untrustworthy Spider-Man. With that being said, if this is the same Jameson in the MCU, there must be more to that story, which could tie into him organizing the Sinister Six from across the multiverse.

An interesting aspect of this theory is that Vulture already knows Spider-Man's secret identity, and thus far has elected to keep the secret. During the Homecoming credit sequence where he encounters Scorpion in prison, he lies and says that he has no idea who Spider-Man really is. There is a level of respect that Vulture has for Peter that would put a wrinkle in Jameson's plan. It also serves as a reason why Vulture would not team up with the other five villains against Spider-Man without outside force. Perhaps Jameson has blackmail on Vulture, or Vulture joins with intent to protect Spider-Man from the rest of the Six.

Jameson as the ringleader for the MCU's Sinister Six would tie together the Six villains from across the multiverse using precedence from the comics. Jameson has already been introduced to the MCU with a serious hatred towards Spider-Man. It may not be enough for him to have just revealed Peter's secret identity — perhaps he has something far more sinister in mind.

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