Who would be the most powerful character if Mortal Kombat and Harry Potter universes collided in fanfiction?

Magneto might also be extremely powerful in such a crossover. His ability to control metal could be a huge advantage in the wizarding world. He could manipulate the metal in wands, cauldrons, and other magical objects. However, he would have to deal with the unique magic that doesn't rely on physical elements all the time.

If we consider the character of Harry Potter himself, his ability to resist the Killing Curse and his connection to the Deathly Hallows could make him a formidable force. In the world of Bioshock Infinite, he could use his magic to protect the oppressed and fight against the tyrannical rule in Columbia. His courage and the power of love, which are important themes in his own story, could also play a significant role in this crossover scenario, perhaps even influencing the characters in Bioshock Infinite in unexpected ways.

However, Voldemort also has a claim to being the most powerful. His dark magic is extremely potent, and if he were to enter the Game of Thrones world, he could use fear and intimidation to gain power. He might even form alliances with some of the more ruthless characters in Westeros to achieve his goals.

Well, Raiden from Mortal Kombat might be a strong contender. He is a thunder god with incredible powers. In a crossover with Harry Potter, his ability to control lightning could give him an edge. He could use his powers to disrupt the magic of wizards or directly attack them. And his immortality would make him a difficult opponent to defeat, even against the most powerful wizards.

It might be Harry Potter himself. He has a lot of experience with dark magic and powerful spells. He could easily use his magic to defeat most of the threats from Stranger Things, like the Demogorgon.

It's hard to say for sure, but Naruto himself could be a very powerful contender. His vast array of jutsu and his ability to harness the Nine - Tails' power would make him extremely formidable. He could easily take on many opponents at Marineford with his shadow clones and powerful attacks like the Tailed Beast Bomb.

It could be Danny. His ghost powers give him a wide range of abilities like flight, intangibility, and ectoblasts. In the Digital World, these powers would be very useful. He could also phase through digital barriers and surprise his enemies. Also, his ability to overshadow people or Digimon could give him an edge in battles.

It's likely the Doom Slayer. He has proven to be an unstoppable force against hordes of demons. His strength, speed, and arsenal of weapons make him a formidable opponent. In a collision with Warhammer 40K, he could take on many of the threats there as well.

The Catalyst from Mass Effect might also be a very powerful entity in such a crossover. It has control over the Reapers and a vast understanding of synthetic and organic life. In a collision with the Terminator universe, it could potentially manipulate or even control the Terminators, as they are machines. It could use them to further its own goals, whatever those might be in this new combined scenario.

It's hard to say, but Sasuke could be a really powerful character in such a crossover. His Sharingan abilities combined with possible bending skills could make him a formidable force. He could use the Sharingan to predict an opponent's bending moves and counter them effectively.