One idea could be an alternate universe where Sam and Dean are vampires instead of hunters. They'd have to deal with the moral implications of feeding while still trying to protect humans from other supernatural threats. Another could be a world where the angels won the apocalypse and rule over humanity with an iron fist, and Sam and Dean are part of a resistance movement. Or perhaps an AU where the supernatural world is known to the public, and Sam and Dean are like famous superheroes in that world.
Begin by choosing a concept for your alternate universe. It could be something as simple as a world where all Supernatural creatures have a different appearance or a more complex idea like a universe where the concept of good and evil is reversed for the Supernatural beings. After that, consider how this affects the story's setting, the characters' relationships, and the overall plot. For example, if you have an AU where Sam and Dean are raised by angels, how does that change their view of the world? You should also think about the new rules of this universe. If there are new types of magic or powers, how do they work? Then you can start writing your story, introducing your readers to this new and exciting alternate Supernatural world.
Perhaps he meets a version of his parents who are still alive. This would be an incredibly emotional encounter for Harry. He would get to know them, and they could teach him things about magic and life that he never had the chance to learn before.
One idea could be a castle that floats in the sky in the alternate universe. It could be made of some kind of magical crystal that gives it the ability to levitate. The inhabitants of this castle might be a race of winged beings who use the castle as a base to protect their realm from dark forces.
He might meet different versions of his friends. For example, a Hermione who is a powerful sorceress ruling a magical kingdom. It would be exciting as he could learn new magic from her and be part of her adventures in this alternate reality.
The adult confidant in alternate universe fanfiction can act as a stabilizer. They can help the main character, who might be disoriented in this new world, to ground themselves. They are like a lighthouse in a stormy sea.
Well, when thinking about an adult confidant in an alternate universe fanfiction, it's important to consider their backstory. How did they become the person (or whatever they are in this universe) that they are? What events in this alternate universe's history shaped them? Their relationship with the main character could be complex. It could start with distrust and gradually develop into a deep bond. They might also have their own goals and motives that at first seem at odds with the protagonist's, but as the story unfolds, they find common ground. For instance, they could be an outcast in their society, which gives them a different perspective on things compared to the more mainstream characters.
Alternate universe fanfiction is an exciting concept in the world of fandom. It's about taking a well - known fictional universe and twisting it into something new. Fans can change the time period, the species of the characters, or their backstories. This type of fanfiction often starts with a simple idea like 'what if the characters lived in a steampunk world instead?' and then builds a whole new story around it. It gives fans a chance to be creative and add their own unique ideas to the existing fictional framework.
One popular alternate universe novel is 'The Man in the High Castle' by Philip K. Dick. It presents an alternate history where the Axis powers won World War II. Another is 'His Dark Materials' by Philip Pullman, which features multiple parallel universes with different rules and beings. 'A Wrinkle in Time' by Madeleine L'Engle also involves travel between different universes.
Definitely check out 'Age of Apocalypse'. It's an alternate reality where Apocalypse rules. The X - Men are in a fight for survival against his tyranny. It has a great mix of action and character development. You get to see characters like Magneto taking on different roles as they struggle to oppose Apocalypse's regime.