Mysterio

Mysterio is a villain in the story who is most known for being affiliated with the Sinister Six and several other terrorist teams.

Involvement in Story
Despite being in the Sinister Six, he was absent during Spiderman's killing, and didn't appear until weeks later.

Out of the several SS members, he was the only way who survived at the time of the heroes clashing with the team, alongside Electro.

He appeared once again weeks later, as a new Sinister Six would form with brand new members.

Months later, he appeared yet again in the tenth fucking reboot of the team.

Later, he finally got something interesting to do as he attempted tarnishing Spiderman's reputation, but he was stopped by Himiko after losing a fight to her. He was killed by Rhino after having his skull crushed into pieces.

He eventually came back, and with the help of Vulture, he successfully escaped prison and went on a large crime spree. He worked with Owlman to stage a bank robbery.

He helped the villains against the heroes finally giving him some interesting shit to do, as he joined the Pig's team. He is an affiliate of the pig and is in their faction, against Exile and the others, while also being in the SS.