It’s not until the show’s final episodes that the mystery is finally revealed — and with it comes another surprise that’s fueled fan theories for years. In Ironheart’s season finale, however, it’s revealed that the theory was a fake-out for the show’s true villain, a supernatural threat that will change Marvel’s Cinematic Universe forever. The pair convene in the pizza shop that later serves as Parker’s base of operations, and there, they make a deal. Riri strikes a deal with Mephisto to bring her friend Natalie (and maybe even her stepdad) back to the land of the living. Sooner or later, the other shoe is going to drop — but with Mephisto finally in the MCU, it’s going to be a little fun watching chaos ensue.