Typically, it portrays Dumbledore as a manipulator. He's seen as using Snape's feelings for Lily and Harry's role in the fight against Voldemort for his own purposes, rather than having pure intentions.
In such fanfiction, Dumbledore is often shown as a controlling figure. He might be painted as someone who was more interested in the grand scheme of things against Voldemort and didn't really care about the individual traumas of Snape or the true growth of Harry. He could be depicted as having kept secrets from both of them that were not necessary and that caused a lot of pain and misunderstanding between Harry and Snape.
These fanfictions usually portray Dumbledore as a self - centered character. For example, he may be shown as being willing to sacrifice Snape's well - being and Harry's trust in order to achieve his goal of defeating Voldemort. His actions towards Harry and Snape are re - evaluated and found to be less than noble, like he was playing a dangerous game with their lives and emotions all along.
In the fanfiction, Snape could protect Harry from Dumbledore by using his skills in potions. For example, he might create a potion that hides Harry's magical signature from Dumbledore's detection. Or he could use his knowledge of the Dark Arts to counter any spells or charms that Dumbledore might use to keep tabs on Harry. Snape is very intelligent and resourceful, so he could find various ways to physically and magically shield Harry from Dumbledore.
In many such fanfictions, Dumbledore might comfort Snape by reminding him of his good deeds. For example, he could say that Snape's role as a double agent is crucial for the greater good. Dumbledore might also offer a sympathetic ear, listening to Snape's inner turmoil about his past actions and his love for Lily. By validating Snape's feelings and his importance in the fight against Voldemort, Dumbledore provides comfort.
Well, obviously Harry Potter. He's the main protagonist in the original series and in the bashing fanfictions, he might be the one to finally see through Dumbledore's facade. Ron Weasley could also be popular. He's Harry's best friend, and in these stories, he might support Harry in his doubts about Dumbledore. And then there's Voldemort. Some fanfictions might use Voldemort as a tool to show how Dumbledore's actions or inactions affected the battle against him. For example, if Dumbledore was so secretive, it could have made it easier for Voldemort to gain power.
Dumbledore can hurt Snape in fanfiction by taking advantage of his love for Lily. He might use this love as a tool to manipulate Snape into doing dangerous tasks. For example, making Snape spy on Voldemort, knowing full well that Snape's life is at risk every time he does so.
One possible plot could be that in this fanfiction, Dumbledore's actions are revealed to be more self - serving in the context of Harry and Snape's relationship. Maybe he was using Snape's love for Lily all along for his own grand plans against Voldemort without truly considering Snape's feelings. Harry might discover this and start to question Dumbledore's legacy, leading to a rift in the wizarding world as others also come to terms with this new view.
One common theme is his so - called 'manipulation' of Harry. Some fanfics focus on how Dumbledore used Harry for the greater good without really considering Harry's personal feelings. Another theme is his secrecy. Writers in these fanfictions often explore how his secrets had negative consequences for the characters around him.
One reason could be that some fans feel Dumbledore made mistakes in the original story. For example, he didn't always fully protect Harry. He also had a rather secretive nature which might have frustrated some readers. So in fanfiction, they explore the idea of criticizing him more deeply.
One reason could be that Snape has his own complex sense of loyalty. He may feel that Dumbledore's plans for Harry are too dangerous or not in Harry's best interest in some ways. He has a long - standing relationship with Harry's mother, Lily, and perhaps through that connection, he wants to safeguard Harry from any harm that might come from Dumbledore's actions or decisions.
The relationship would become very strained. Harry's rejection would likely make Dumbledore re - evaluate his actions and how he has interacted with Harry. Dumbledore might be shocked at first, since he probably thought Harry was on the same page as him most of the time.
As the story progresses, Dumbledore might try to make amends. He could start revealing some of his secrets to Harry in an attempt to regain his trust. Harry, on the other hand, would be hesitant at first but gradually start to listen and understand Dumbledore's reasons.