A really interesting plot twist is when the magic from Harry Potter starts to malfunction in the Maze Runner world. For example, spells backfire or don't work as expected. This forces the characters to rely more on their wits and the skills they learn from the Maze Runner characters, like running and physical combat.
One fanfiction has a plot twist where the characters from Maze Runner turn out to be descendants of wizards who were banished from the wizarding world long ago. So, they actually have latent magical abilities that start to surface when they interact with Harry Potter. This discovery changes the whole relationship between the two groups and the way they approach their challenges.
In some fanfics, a plot twist could be that Voldemort teams up with the Creators from Maze Runner. This completely changes the power dynamics as the combined evil forces pose a huge threat to the protagonists. It makes for a very intense read as the heroes have to find new ways to fight back.
One interesting crossover could be the characters from Maze Runner finding themselves in the wizarding world of Harry Potter. They might be amazed by the magic and spells, while the Hogwarts students could be intrigued by the Gladers' survival skills. For example, Thomas could befriend Harry and they could team up to solve a mystery that involves both the Maze and the Dark Arts.
Another idea is that the Death Eaters in Harry Potter create a new kind of maze similar to the one in the Maze Runner as a form of torture or experiment. Harry and his friends then team up with the Gladers to escape this new, magical maze.
One interesting crossover could be the magical elements of Harry Potter in the post - apocalyptic setting of Maze Runner. For example, using spells to solve the maze puzzles. Another could be the characters from both universes teaming up. Like Harry and his friends joining forces with Thomas and the Gladers to fight a common enemy, perhaps a new dark wizard who has also influenced the Maze Runner world.
Harry Potter himself is often very popular. His magical abilities and leadership skills make him an interesting addition to the Maze Runner plot. Thomas from Maze Runner is also popular in these fanfics. He's the main character in his own story and his determination and survival skills can be really cool when combined with the magic of Harry Potter.
A cool plot for the maze runner fanfiction could be that there is a traitor among the Gladers who is secretly working for the people who put them in the maze. This traitor could be slowly sabotaging their efforts to escape. Or perhaps the maze starts to change in really strange and unpredictable ways, like the walls start moving at random times instead of just at night. The Gladers then have to figure out a new strategy to deal with this. And what if there were other groups of kids in different mazes and they somehow find a way to communicate and team up to escape all the mazes together.
One interesting plot twist could be when Caesar turns out to be a long - lost wizard. This completely changes the dynamic as he then has to learn about his magical heritage while also dealing with the existing Harry Potter world's problems.
In some 'Harry Potter Sith fanfiction', a plot twist could be that a seemingly good character is actually being influenced by Sith powers all along. For example, a teacher at Hogwarts who is secretly using Sith mind - control techniques on students to further their own dark agenda.
In some fanfics, a plot twist could be that a character from The Originals turns out to be related to a major Harry Potter character. For example, it might be revealed that a vampire has a long - lost wizard relative in the Potterverse. It completely changes the dynamics of how the two worlds interact.
A really interesting plot twist in 'Hellsing in the Wizarding World' is when the magic from Hogwarts starts to affect the vampires in Hellsing in unexpected ways. For example, some vampires gain the ability to use wizard spells, which turns the whole story on its head. It makes for a really unique take on how the two worlds can interact on a magical level.
A really interesting plot twist could be when the Daleks, who are known for their technology and destruction, are somehow outsmarted by the magic of a first - year Hogwarts student. It goes against their usual superiority in their own universe.