In a Harry Potter and Pitch Black crossover fanfiction, perhaps Voldemort has made a deal with the forces of Pitch Black. He wants to use the chaos and darkness of that world to gain more power. Harry and his friends have to travel to the Pitch Black universe to stop him. There, they encounter not only the deadly aliens but also face challenges within their own group. Some might be tempted by the dark power that Voldemort is after, and Harry has to keep them in line while also fighting the external threats.
One possible plot could be that the characters from Harry Potter somehow end up on the desolate planet from Pitch Black. Harry and his friends could encounter the dangerous creatures of Pitch Black while trying to find a way back home. Hermione might use her magic to try and understand the strange environment, while Ron could be a bit more freaked out by the whole situation.
Well, imagine that the dementors from Harry Potter are somehow related to the dark creatures in Pitch Black. A group of Hogwarts students, including Harry, are sent on a mission to investigate this connection. They meet Riddick on the planet, and he initially doesn't trust them. But as they face the common threat of the Pitch Black creatures, they start to work together. Harry could learn some survival skills from Riddick, and Riddick could be intrigued by the magic of the wizarding world.
In a Harry Potter and Pitch Black crossover fanfic, there are so many possibilities. Harry and his friends could team up with the survivors in Pitch Black. The dementors from Harry Potter could be compared to some of the scarier creatures in Pitch Black. The magic wands could be a great advantage in a world where brute force and survival skills are the norm. The fanfic could explore how the values of the Harry Potter world, like friendship and courage, play out in the much darker and more desperate world of Pitch Black.
Well, perhaps the magical creatures from the Harry Potter universe end up in the '300' setting. Dragons could be used by the Spartans to fight their enemies. The centaurs could also join the battle, lending their archery skills. And Harry could learn some combat skills from the Spartans, which he could then use back in the wizarding world to fight Voldemort's Death Eaters.
One idea could be to have the characters from Harry Potter end up in the Pitch Black universe. Maybe Harry and his friends could be stranded on a planet like in Pitch Black and have to deal with the dangerous creatures there while also using their magic in unique ways. For example, using Lumos to fend off the Pitch Black creatures in the dark.
In this type of fanfiction, the idea of magic itself evolving in the pitch - black setting is fascinating. Maybe the magic that is related to light, like Lumos, has been corrupted or weakened. So, wizards and witches have to rely on other types of magic, like magic that senses the environment or magic that can create a form of sonar - like effect. This would force the characters to re - evaluate their understanding of magic and adapt to this new, darker magical reality.
Another great pairing could be Ron and Fry. Ron is a bit of a laid - back character who often follows Harry's lead, while Fry is a strong - willed woman. Fry could encourage Ron to be more independent and take charge. Ron could introduce Fry to the concept of magic, which she would find both amazing and a bit hard to believe at first. Their relationship could be a source of both comedy and growth in the fanfiction.
Well, in a Harry Potter Pitch Black crossover fanfic, a plot could revolve around a prophecy. There could be a prophecy that foretells the coming together of the two worlds and the role that certain characters from both universes will play. Harry could be seen as the key to saving both worlds from a great evil that is emerging as a result of the crossover. The fanfic could explore how the different cultures and abilities of the two worlds interact. For example, how would the Pitch Black characters react to the concept of magic? And how would the Hogwarts students handle the lawless and dangerous nature of Pitch Black? There could be a lot of drama as the characters struggle to understand each other and work towards a common goal.
The Stargate could be a portal between different magical realms in the Harry Potter universe. For example, it could lead to a place where ancient and more powerful magic exists. Wizards from different schools around the world could team up with Stargate explorers to uncover the secrets of this new place. There might be a new threat emerging from this realm that requires both magic and Stargate technology to defeat. This would bring together characters like Harry Potter and Jack O'Neill to lead the charge against the common enemy.
Well, perhaps there's a rift in the multiverse that connects Central City to Hogwarts. The Flash, while chasing a villain, gets sucked into the wizarding world. Harry Potter and his friends initially suspect him as a threat but then realize his good intentions. They then combine their powers - the Flash's speed and the magic of the wizards - to fight a common enemy. For example, the Flash could use his speed to distribute protective spells all over Hogwarts really quickly, while Harry and his friends focus on the offensive magic against the bad guys.
One idea could be that Carly and her friends discover a magical portal in their apartment that leads to Hogwarts. They then have to navigate the wizarding world, with Carly being fascinated by all the magic. Meanwhile, Harry Potter and his friends are intrigued by the strange Muggle - like devices the iCarly gang has. They end up teaming up to solve a mystery that involves both the wizarding and Muggle worlds.
Well, perhaps the Death Note from the Bleach universe gets mixed up with the magic in Harry Potter's world. A powerful wizard could get hold of it and start using it in ways that disrupt the balance of life and death in both worlds. Harry and his friends would have to figure out how to stop this misuse, with the help of some Bleach characters who understand the true nature of the Death Note.