In 'harry changes sides fanfiction', perhaps an interesting idea is his internal struggle. Harry has always been seen as a hero on one side, so changing sides means grappling with his own identity. He may have to face the disappointment of those he once called friends. Also, it could show how the other side welcomes him, whether with open arms or with suspicion.
One interesting idea could be exploring the complex relationships Harry has to re - evaluate. For example, his friendships might be strained as he changes sides. Another aspect could be how his view of the magical world's power structures alters. He might start to see the other side's motives in a different light, which could lead to some unexpected alliances.
Another plot could involve Harry being influenced by a family connection he discovers to a Death Eater. This newfound relation makes him reevaluate his beliefs and he starts to see the Death Eaters as more than just pure evil. He might think that by joining them, he can reform them from the inside.
Another possibility is that Draco falls in love with a character from the opposing side. His love could be so strong that it overrides his loyalty to his original side, leading him to change. For example, if he falls for a Gryffindor, he might start to see things from their perspective and gradually shift his allegiance.
Perhaps Harry discovers some long - hidden family secrets that make him believe that the so - called 'good side' has been wrong all along. He might find out that his family has a connection to the Dark Arts that was misrepresented by Dumbledore and others. This newfound knowledge could cause him to change sides and try to rewrite the wizarding world's view of good and evil.
In some fanfictions, Harry's Patronus could change because of a magical artifact. Maybe he discovers an ancient amulet that has the power to influence magic within him. As he gets closer to the amulet and starts to understand its power, his Patronus begins to change, say from a stag to a griffin, which could represent the new power and knowledge he has gained from the amulet.
Obviously, Harry Potter himself is the central character in this type of fanfiction. Then there are often characters like Voldemort or his Death Eaters, as they are the ones Harry would be changing sides to. Bellatrix Lestrange could be a key figure in trying to persuade Harry or manipulate him into joining their side.
The Death Eaters themselves would be affected in an interesting way. Some might welcome Harry with open arms, but others might be suspicious of his sudden change of sides. They might fear that it's a trick by the Order. And within Hogwarts, the students would be in turmoil. Those who idolized Harry would be heartbroken and confused, and there could be a split among the student body depending on who believes Harry's new stance.
The character development may start with Harry's doubts. He begins to question the side he was on, which leads to his decision to change. As he moves to the other side, he has to adapt to new values and beliefs. This forces him to grow and re - evaluate his past actions.
One interesting scenario could be Harry realizing that the so - called 'dark side' has been misrepresented. Maybe he discovers that the Death Eaters have some valid grievances against the Ministry's corruption, which makes him question his allegiance. Another could be that he's influenced by a powerful dark magic artifact that makes him see things from Voldemort's perspective, at least temporarily.
Another plotline could involve Harry being betrayed by the Order of the Phoenix. Feeling hurt and lost, he decides to side with Voldemort out of revenge. However, as he gets closer to the dark side, he realizes that Voldemort's true nature is far more evil than he thought and has a change of heart.
A Sanders Sides crossover with a classic fairytale world would be cool. Picture them in Wonderland, with Logan as the logical one trying to make sense of all the chaos. Or perhaps a crossover with a post - apocalyptic setting where they have to use their unique traits to survive. Thomas could be the leader, relying on each side's advice to keep everyone alive.