In an alternate dimension fanfiction, Neville Longbottom could take center stage. He could be the hero who rises up against the dark forces. Luna Lovegood might also be a main character, with her unique perspective on the alternate wizarding world. And we could also have new characters that are exclusive to this alternate dimension. For example, a Muggle - born wizard who has the power to control time, and he teams up with Harry and his friends to save the wizarding world from a new threat that emerged in this alternate reality.
It could be an alternate version of Dumbledore. Maybe in this dimension, he was corrupted by power. He uses his vast knowledge and influence to control the wizarding world for his own ends. He manipulates the students at Hogwarts and uses dark magic in secret while maintaining a public facade of being a great wizard.
One idea could be that in the alternate dimension, Voldemort won the war and Hogwarts is now a dark and dreary place where students are taught only dark magic. Another could be that the wizarding world is merged with the Muggle world in a strange way, like there are magical creatures running amok in London streets. Or perhaps in this alternate dimension, Harry was sorted into Slytherin and has to deal with a whole different set of challenges and prejudices.
Well, in Harry Potter fanfiction, the 'Dimension Father' might be a character with a very specific role. Maybe he's a sort of guardian of the dimensional boundaries. He ensures that no dark magic from other dimensions seeps into the main Harry Potter universe. He could also be a source of knowledge for characters like Hermione who are always eager to learn new magic. For instance, he might teach her about the spells and incantations that are unique to other dimensions, which she could then use to help Harry in his fight against the dark forces.
Luna Lovegood is quite popular in 'Dimension Hopping' fanfiction. Her unique perspective and open - mindedness make her well - suited for exploring strange dimensions. Draco Malfoy can also be a key character, especially in stories where he has to team up with the protagonists in a different dimension due to some unexpected circumstances.
Harry Potter himself is often still a popular character. Since it's a dimension jumper fanfiction, his character can be explored in different scenarios across dimensions. Hermione is also popular as she can use her intelligence to figure out the differences in each dimension.
Harry Potter himself is very common. Writers often use him to explore the new and strange pocket dimension. Hermione Granger is also popular as she would be eager to study and understand the unique magic of the pocket dimension. Ron Weasley might be there too, providing his usual humor and loyalty. Dumbledore could be a recurring character as well, perhaps having some prior knowledge about the pocket dimension and guiding the younger characters through its mysteries.
Hermione is often a popular character. Her intelligence and resourcefulness make her a great asset in different dimensions. She can quickly adapt to new situations and figure out how the magic in that dimension works.
Often, Harry Potter himself still makes an appearance in these fanfictions. He might visit the alternate school for some special event or competition. Hermione Granger could also be there, perhaps as a guest lecturer sharing her vast knowledge. Ron Weasley may tag along with Harry. And of course, Dumbledore might be a figure that is mentioned or even has some influence over the alternate school, given his great wisdom and power in the original series.
One idea could be that in the alternate dimension, Voldemort won the war long ago. Hogwarts is now a dark and dreary place, with Death Eaters as teachers. Harry and his friends, who are part of an underground resistance, have to find a way to travel back in time to change the course of history.
Dimension travel in Harry Potter fanfiction is really exciting. Sometimes, it allows the main characters to gain new powers or knowledge from other dimensions. They might meet alternate versions of themselves or their friends. It can also be a way to fix things that went wrong in their original dimension. For instance, if a character made a big mistake, they could travel to a dimension where that mistake didn't happen and learn how to correct it in their own world.