Perhaps a group of rogue time - traveling wizards. They come from a future in this dimension where the wizarding world has been destroyed, and they believe that changing the past (even if it means causing chaos) is the only way to save their future. They see Harry as a threat to their plans because he has a natural inclination to preserve the present order.
Well, a cool plot for 'Harry Potter in Another Dimension' fanfic could be that Harry discovers he has a twin in this other dimension. His twin has been raised by Voldemort and has a very different view of the wizarding world. Harry has to find a way to convince his twin to abandon Voldemort's ways. Or, what if in this dimension, the Sorting Hat can talk out loud all the time and gives very different sorting decisions? For example, it might put all the brave students in Slytherin and the cunning ones in Gryffindor. It would be really interesting to explore how the relationships between the houses change.
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.
In Harry Potter fanfiction, the dimension can be portrayed in various ways. Sometimes it's a parallel magical world with different rules. For example, a dimension where dark magic is the norm instead of being shunned. It can also be a place where time moves differently, like a dimension where a day in the regular Harry Potter world is a year there.
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.
One popular concept is the idea of a 'Mirror Dimension' in Harry Potter fanfiction. It's like a parallel world that reflects the main HP universe but with some key differences. Another is the 'Time - Locked Dimension' where time moves at a different pace. This can create interesting scenarios where characters from the normal HP world enter and have to adapt quickly.
One unique feature is the exploration of alternate realities. For instance, we might see a world where Hogwarts is a school for dark magic instead of good. It allows for a complete re - imagining of the familiar settings and characters.
One common theme is self - discovery. As Harry or other characters hop between dimensions, they often learn new things about themselves. Another is the exploration of different magical systems. Since each dimension can have its own unique magic, it's a great opportunity to explore that. And, of course, there's usually some kind of threat or mystery that spans across dimensions that the characters need to solve.