Ron could also be there. He might be a bit jealous at first of Harry's special relationship with Dumbledore but then comes around and supports Harry in his adventures as an apprentice. There could be some great scenes of their friendship evolving in this new context.
In some fanfictions, Harry as Dumbledore's apprentice might have to deal with a dark prophecy that only he, with Dumbledore's guidance, can solve. This could lead to a journey where he has to make difficult choices between different paths, each with its own consequences for the wizarding community. It would be a great exploration of Harry's character growth and his relationship with Dumbledore in a more in - depth and unique context.
Another plot could be the apprentice getting involved in a time - traveling adventure. They might travel back in time to witness key events in the wizarding world's history, like the founding of Hogwarts. Along the way, they could accidentally change something in the past, and then have to find a way to fix it before it causes chaos in the present.
One interesting plotline could be Harry learning advanced magic from Dumbledore that is not taught in the regular Hogwarts curriculum. For example, he might learn ancient spells for protection or divination techniques that are long forgotten.
It could also be a character from outside of Hogwarts. Maybe a young wizard who has been self - taught in some dark magic and Dumbledore takes them as an apprentice to guide them towards the light side of magic. Dumbledore would see the potential for good in this character and want to reform them.
Well, Harry might outsmart Dumbledore by using his unique understanding of the magical world in ways Dumbledore doesn't expect. For example, Harry has a more direct experience with some dark magic items due to his encounters with Voldemort. He could use this knowledge to make decisions that seem counter - intuitive to Dumbledore but are actually more effective in a particular situation.
He might give Harry detention. Harry could be made to clean the trophies in the trophy room or help Hagrid with some difficult tasks in the Forbidden Forest under strict supervision.
One possible reason could be that Harry breaks school rules in the fanfiction. For example, if he ventures into the Forbidden Forest without permission. Dumbledore is strict about the safety of students and such disobedience might lead to punishment.
Harry may also develop a greater sense of responsibility. Knowing that Dumbledore has chosen him as an apprentice implies a certain level of trust and importance. He would feel the need to live up to Dumbledore's expectations and use his new - found knowledge and skills to protect the wizarding world. He could start to take on more leadership roles and be more proactive in the fight against the dark forces.
For Harry, his friends like Ron and Hermione are likely to be his allies. They've always been by his side through thick and thin in the original series, so it's natural for them to support Harry in a confrontation with Dumbledore. Neville could also be an ally, given his growth and courage shown in the books.