If you have watched the movie, you may have seen the scene at the end of the credits where Connors is locked in his cell in the asylum, and he meets up with a "man in the shadows", who in which he obviously knows. The man asks, "Did you tell the boy about his father?", and Connors replies with a simple no. The man then says he will leave him alone , for now. There are only three main leads as to who this strange man is, with one of them has been proven false. Norman Osborn, Edward Brock Sr, and Michael Morbius. These are the ones I believe could have good reasons as to how they could connect to Peter's past. Or his father's past in this case. I'm not gonna do Norman too much since Webb proves that it is not him, but if it was, the movie says that Norman Osborn is dying and the formula Connors was originally going to be used for Norman to be cured. Just wanted to get that out there (hint hint
. Anyway, it could be Edward Brock Sr. because in the ultimate spiderman storyline, it shows that Edward and Richard use to work together on something that could cure cancer. This was known as "Project Venom". It was the symbiote that took over. Maybe there was an "untold" partner to Connors and Richard that helped them on this project for a serum that could cure illnesses, weaknesses, etc. As for Michael Morbius, here is an article I found on the amazing spiderman Wikipedia, "Michael Morbius works as a biochemist at Oscorp Industries. He was forced by Rajit Ratha to create the hybrid human-animal Rhino for the mafia.
One of Oscorp's most pubicly celebrated scientests, Michael Morbius won the Nobel Prize three years ago for an outstanding achivement in biochemistry. In the time since, however, Morbius has grown more and more reclusive, avoiding human contact as much as possible, and choosing only to work at night. This practice, along with his recent penchant for experimenting on bats, has prompted his colleagues to refer to him as "the Living Vampire". If only they knew the truth...
In actuality, Morbius is dying of a rare disorder that slowly dissolves his blood cells. Under the guise of developing a new wonder drug for Oscorp, he secretly works on a cure for his own condition. Whereas Curt Connors was convinced the key to reversing his own condition was within reptiles, Morbius just as strongly believes that distilled fluids from bats will hold the key to eliminating his own disease.
Shortly before the Lizard incident, Morbius' work was put on hold. Knowing his own work was a few steps behind that of Connors, Morbius dug into Connors' research as soon as it was presented to him by Rajit Ratha. However, Ratha forced Morbius to remake Aleksei Sytsevich into the Rhino, putting Morbius' work with bats back by weeks.
Now, months later, and with no more threats from Ratha (Lizard had murdered him), Morbius' research carries on. He believes that he even has finally created a cure for his disease. He needs only try it...", intriguing, isn't it? He is dying of a rare disease that dissolves his blood cells, and is known as, the Living Vampire (obviously you're read that). This may explain why he, as the man in the movie, was known as "the man in the shadows"! Vampires must always stay in the dark. He is the one that I believe has stolen the original notes of Richard Parker, to create his own serum to heal his body and all others. You can also see that the man's hands in the movie are very gnarled and old. Showing this, the man is slowly dying every day, similar to Michael. He may most likely be the man in the shadows....