Fan CastingHow Doctor Octopus entered the MCU.

During a lab accident, Octavius' mechanical arms were permanently bonded to his spinal column and the neural inhibitor chip was destroyed. Through the loss of his inhibitor chip, Octavius heard the voices of his arms within his head. They played on his vanity and ego to corrupt his mind and convince him to rebuild his reactor at any cost. Octavius was given the name Doctor Octopus, as well as Doc Ock for short, and came into conflict with Spider-Man. In their final battle, Spider-Man tried to stop his machine and revealed his identity, but Doctor Octopus grabbed him by the throat. Meanwhile, in another universe, Doctor Strange tried to cast the Runes of Kof-Kol to make everyone forget his Peter Parker was Spider-Man. However, the spell failed and connected to other realities in the Multiverse, bringing people who were aware of Spider-Man's true identity from those to their universe. As time was scrambled, people who were originally dead in their universes were brought alive to this one, one of them being Octavius. Upon arriving in the other universe, Octavius was still under the control of his mechanical arms and the last thing he remembered was holding Spider-Man by the throat. With nothing else to ground him in this new reality, Doctor Octopus tried to find his fusion reactor until he arrived at the Alexander Hamilton Bridge.