1. MJ is Nick Fury’s Daughter?
The evidence for this connection is mostly figurative. But fans have noticed foreshadowing that MJ could be Nick Fury’s daughter, or is connected to him in some way.
She has a way of sneaking up on people in her scenes, where people don’t notice she’s there (like at the house party in Spider-Man: Homecoming). Her hair is always hanging in her face on one side, which might be a nod to her father’s injured eye.
She’s anti-authority and politically active. She’s very good at analyzing and reading situations; she asks at the end of Homecoming what Peter is hiding, and in the Far From Home trailer, she may have even figured out his secret identity. When Nick Fury tracks Peter down, is he also keeping an eye on his daughter?
It also creates a good running joke; Peter’s first love interest was the daughter of Vulture. It would be very unfortunate if his second love interest was the daughter of his boss. The kid can’t seem to catch a break.