Who would be the most likely villain in an MCU Peter meets Peter fanfiction?

Maybe in the fanfiction, MCU Peter is on a mission when he accidentally stumbles into a portal and ends up in the world of another Peter. They start comparing their lives, like how different their love interests are. MCU Peter could learn some old - school web - slinging techniques from the other Peter, and they end up having to fight a villain that threatens both of their worlds, leading to a great team - up.

One great fanfiction in this category could be 'The Convergence of Universes'. It explores how MCU characters interact with Earth - 616 Peter Parker in a really exciting way. The story has some great action scenes where Peter shows off his skills from Earth - 616 while also learning from the MCU counterparts.

The Green Goblin could be a likely villain. He has a long history with Spiderman and his maniacal nature would put him at odds with both Spiderman and Deadpool. His glider and pumpkin bombs would be a real threat to them.

It could be a dark wizard who has discovered the existence of demigods and wants to use their powers for his own evil purposes. He might see Annabeth as a key to unlocking the secrets of demigod strength and try to capture her.

One likely antagonist could be a disgruntled former Stark Industries employee. This person has access to some of Iron Man's old tech and uses it to create chaos. They might target Peter Parker too because he's associated with Iron Man now.

A new character could be created as the main antagonist. For example, a powerful sorcerer from another dimension who wants to steal the powers of both Peter and Valkyrie. This villain could be after the spider - powers and Valkyrie's Asgardian strength to increase his own power and take over the MCU universe.

The main characters are Peter and the Avengers. But we might also see some side characters like Happy Hogan who could be involved in some way. Maybe he's the one who arranges the initial meeting between Peter and the Avengers. And Pepper Potts could also make an appearance, giving her take on Peter's presence in the Avengers' world.

Jason Todd would likely cross paths with Doctor Strange. Their worlds are very different, with Jason being more of a street - level fighter and Doctor Strange dealing with magic and otherworldly threats. But their encounter could lead to Jason learning about different forms of power and Strange might be interested in Jason's tenacity and willpower, which could be useful in his own battles against the forces of the dark dimension.

Probably Steve Rogers. He has that all - American hero charm and he values loyalty and courage, which Peter clearly has. Steve would recognize those qualities in Peter right away and would want to get to know him better. He might see Peter as a symbol of the future of heroism and be eager to befriend him.

The different power - sets and how they interact. Earth - 616 Peter might have different abilities or a different way of using his powers compared to the MCU version. For example, his web - shooters might work differently or he could have some additional powers that the MCU Peter doesn't. This can create cool fight scenes and problem - solving situations in the fanfiction.