One way to make Voldemort more complex is to give him a moral code, albeit a twisted one. He might believe that his actions of purging the wizarding world of Muggle - borns are for the greater good of the pure - blood wizards. This would make him more than just a one - dimensional villain. Also, explore his relationship with magic itself. He's extremely powerful, but what if there are certain types of magic that he respects or fears? Maybe there are ancient magics that he believes could either destroy him or make him truly invincible. And don't forget to explore his mental state. He's clearly not a normal, well - adjusted wizard. Maybe he has hallucinations or voices in his head that he has to deal with, which could be a result of his dark magic use or his fractured soul. This would make him a much more complex and interesting character in your fanfiction.
First, re - read the original 'Harry Potter' books to get a good feel for the characters of Harry and Voldemort. Their personalities, their motives, and their powers. Then, think of a unique concept or plot that hasn't been done too often. For example, you could start with a situation where Voldemort and Harry are forced to team up for a common goal, like saving Hogwarts from a new, even greater threat.
In this fanfiction, it could be that Voldemort has a premonition. He sees that if Harry Potter dies, it will lead to a series of disasters that will also destroy his own plans. So, in order to preserve the balance or to keep his long - term goals intact, he saves Harry. For example, if Harry's death causes an uncontrollable chaos in the wizarding world, Voldemort's rule over the dark forces might be disrupted. So he steps in to save Harry.
Focus on Voldemort's emotions. Most often he is portrayed as just evil, but showing his insecurities, his fears, and his desires in a more nuanced way can make your fanfic stand out. For example, his fear of death could be explored in greater depth.
In fanfiction, Harry Potter and Voldemort are related through the prophecy that ties their fates together. This often leads to scenarios where Harry has a unique understanding of Voldemort, like being able to see into his mind. Fanfic writers may also play with the idea of a shared past or some sort of magical bond that was created before they even knew of each other. They are two sides of a magical coin in many fanfictions, with Harry representing the good and Voldemort the evil, but their relationship is much more nuanced than just that.
Harry could become more powerful in a way that scares his friends. Voldemort's training might focus on the Dark Arts, which are powerful but dangerous. This could change Harry's magic style. He may become more solitary as his new skills and knowledge set him apart from his Hogwarts friends who follow a more traditional path of magic.
The relationship would become extremely complex. Harry would be confused and conflicted. He's been taught all his life that Voldemort is pure evil, but now he's been saved by him. Voldemort, on the other hand, might start to see Harry in a different light, perhaps as a tool or as someone with whom he can form an unusual bond. It would be a relationship full of mistrust on Harry's part and manipulative intentions on Voldemort's.
The relationship would become extremely complex. Harry would no longer be able to simply see Voldemort as pure evil. He would be in a state of confusion and moral dilemma. Voldemort, on the other hand, might start to view Harry as a more interesting pawn rather than just an enemy to be killed. They could develop a strange sort of respect for each other, at least on a surface level.
In some fanfictions, Harry might show off his strong friendships, like his bond with Hermione and Ron. This could make Voldemort jealous as he has no such loyal comrades. Voldemort is often alone in his pursuit of power, while Harry is surrounded by people who love and support him.
It's possible. In the realm of fanfiction, the imagination knows no bounds. Writers might come up with such a scenario for various reasons, perhaps to explore a different side of the characters' relationships. But it's not a common or mainstream concept within the Harry Potter fanfiction community, as it goes against the typical character dynamics we expect from the series.
In many fanfictions, Harry Potter squinting at Voldemort could be a sign of intense focus. It might be that Harry is trying to read Voldemort's next move, or perhaps he's looking for some sign of weakness. For example, in some stories, Harry's squinting could be related to his newfound magical abilities that he's using to analyze Voldemort's magic signature.