In some fanfictions, Dumbledore is portrayed as having a lot of secrets. If he gets caught, it could be related to his past. Maybe some old enemies find out where he is and catch him. Then he would have to deal with his past coming back to haunt him. His friends might try to rescue him, but it would be a very difficult situation for him, and it could change the whole dynamic of the fanfiction story.
One possibility is that Dumbledore gets caught spying on a group of Death Eaters. This would put him in a very dangerous situation as the Death Eaters are extremely cruel and loyal to Voldemort. He might be tortured for information about the Order of the Phoenix. However, Dumbledore is very resourceful and would probably be able to hold his own against them for a while, giving his allies time to figure out a rescue plan.
In such a fanfiction, Dumbledore might face consequences for his actions. For example, his manipulative ways could be exposed. Maybe his secrets regarding Harry Potter's upbringing and the true purpose behind his actions could come to light, leading to a loss of his respected status among the wizarding community.
There's also a chance that Dumbledore gets caught by a group of rogue magical creatures. For instance, if he was exploring an area that was supposed to be off - limits to wizards and the creatures there saw him as an intruder. They might not be as rational as wizards and could hold him captive without really understanding who he is.
In some cases, when Dexter gets caught, the people who catch him might try to rehabilitate him. They could think that there's still some good in him and attempt to change his ways. However, Dexter might resist this change as his nature is deeply ingrained. This could lead to a power struggle between him and those who want to reform him, creating a lot of drama and tension in the fanfiction story.
Well, it could be that Ash gets caught in the Pokeball by accident. Once inside, he might start to understand the feelings of Pokemon when they are captured more deeply. He could try to figure out a way to escape, and in the process, learn some secrets about how Pokeballs work that he never knew before.
The story would take a different turn if Dumbledore gets caught. His capture could be the starting point of a new adventure for other characters. They might set out to prove his innocence or find out the real reasons behind his actions. This could involve a lot of detective - like work, exploring different parts of the wizarding world, and uncovering secrets that were long buried. It could also lead to a change in the relationships between the characters, as they might question their loyalty to Dumbledore or to those who caught him.
Even some of the Hogwarts professors or students could catch Dumbledore. Maybe a curious student stumbles upon Dumbledore in a restricted area where he's doing something strange. Or a professor who has a different view on how to run the school catches Dumbledore in the middle of an action that they think is wrong for the school's environment.
Well, Harry would probably have a very different upbringing. He'd be surrounded by Dumbledore's wisdom all the time. He might learn magic at a much faster pace and gain deeper insights into the wizarding world's history and secrets right from the start. Dumbledore could also protect him more effectively from the dark forces, as he's one of the most powerful wizards. And Harry would grow up in an environment full of magic and knowledge, which would shape him into a different kind of wizard compared to the original story.
In the fanfiction, the Howler could be a warning from an unknown dark force. Dumbledore has been making moves to counter the rising dark magic in the wizarding world. This dark force, not wanting to be thwarted, sends a Howler as a form of intimidation. The Howler could contain veiled threats and references to past events that only Dumbledore would understand.
The fanfiction could focus on Dumbledore's backstory. Fans might write about his early years at Hogwarts as a student, his friendships, and how he developed into the great wizard he became. It could also include his interactions with other magical creatures in more depth than the original series, such as having secret meetings with centaurs or merpeople to gain wisdom.