Who would be the main antagonist in a 'Peter and Valkyrie MCU fanfiction'?

A more complex plot could involve time - travel. Maybe an enemy from the past is brought to the present and is causing chaos. Peter and Valkyrie are brought together by Doctor Strange or some other powerful character to fix the timeline. They have to travel to different time periods, including Asgard in its prime and Peter's past in Queens. Along the way, they discover secrets about each other and the MCU universe as a whole.

Doc Ock could also be a likely villain. He is intelligent and has those powerful mechanical arms. Imagine the two Peters trying to figure out how to stop his arms from causing destruction. MCU Peter might use his Stark - tech knowledge, while the other Peter could use his more traditional problem - solving skills to take on Doc Ock.

Another possibility could be an original antagonist created specifically for the fanfiction. For example, a powerful sorcerer from a hidden dimension who sees the OC's rebirth as a disruption to the natural order of the MCU universe. This sorcerer could try to eliminate the OC and use their power for their own dark purposes. They might be able to manipulate magic in ways that even Doctor Strange hasn't seen before, making them a formidable foe.

It could be Voldemort who somehow gets his hands on Oscorp technology and uses it to make his dark magic even more powerful. He would be a formidable foe for both Harry and Peter, as he has his own army of Death Eaters and now enhanced powers. Harry would use his magic and Peter his superpowers to fight against Voldemort's new - found strength.

It could be Hydra. They might be trying to take advantage of the split between the Avengers and the Rogue Avengers. They see Peter as a wild card and try to either capture or turn him against both groups.

It could be someone who hates the idea of Valkyrie and wants to stop Percy's mom from being a fan. Maybe a jealous god who doesn't like mortals being interested in Valkyrie.

It could be Voldemort. Since he's the main villain in the Harry Potter series, he'd see Peter as another threat to his power, especially if Peter starts interfering in the wizarding world with his newfound family in Harry.

Perhaps a new villain created specifically for the fanfiction. A mad scientist who has been studying the powers of Spider - Man and has developed a way to nullify their powers temporarily. This would force Peter and Miles to rely on their wits and non - power - related skills to defeat him.

The White Witch could make a great antagonist even in a Prince Caspian and Peter fanfiction. Her evil magic and desire for power are well - known. She could return in some form, perhaps a remnant of her magic that was left behind and has now taken on a new, more insidious form. Another option could be a power - hungry Narnian noble who wants to overthrow Prince Caspian and sees Peter as a threat to his plans. He could be sly and manipulative, causing trouble for both of them.

A powerful dark wizard could be the main antagonist. This wizard has been ruling the other dimension with an iron fist and sees Peter as a threat to his power. He uses his dark magic to create all kinds of obstacles for Peter, from summoning monsters to casting spells that distort Peter's perception of reality.