Fanfic ideas combining Harry Potter and Wendigo
One idea could be a story where a Wendigo somehow enters the wizarding world of Harry Potter. Maybe it's brought in by a dark wizard who wants to use it as a weapon. The Trio - Harry, Ron, and Hermione - would then have to figure out how to defeat it using their magic and knowledge.
A fanfic could be about a Hogwarts student who has a strange encounter with a Wendigo during a forbidden forest exploration. The student might initially mistake it for a magical creature they've read about in books, but soon realizes the true danger. The story could focus on their survival and how they get help from the professors.
Perhaps in a fanfic, there could be a hidden tribe of Wendigos in the far reaches of the wizarding world. Harry Potter discovers their existence while on a quest for some powerful magic item. The Wendigos are initially hostile, but through some events, they end up forming an uneasy alliance with Harry to fight a common enemy, like a group of Death Eaters who also want the magic item.
Fanfiction ideas combining Harry Potter's Animagus and Wendigo
One idea could be a character in the Harry Potter universe who is secretly an Animagus but gets cursed and starts to show Wendigo - like traits. They struggle to control their newfound savage nature while also hiding it from their friends at Hogwarts.
Fanfic ideas combining Harry Potter and Hulk?
One idea could be that Hulk somehow gets transported into the wizarding world of Harry Potter. Maybe a magical experiment gone wrong by a Hogwarts student creates a portal that sucks Hulk in. He could then cause chaos as he's not used to the magic and strange creatures there.
Fanfic Ideas Combining Harry Potter and Justice League
Another concept is that the magic from the Harry Potter series starts to seep into the DC universe where the Justice League operates. This causes chaos as the laws of physics in the DC world are disrupted. The Justice League has to seek help from Hogwarts professors to understand and contain this new form of magic energy. Superman might be intrigued by the idea of magic being a new power source or a new threat he can't easily overcome with his super strength.
Fanfic ideas combining Harry Potter and Tony Stark
One idea could be that Tony Stark somehow discovers the wizarding world while working on a new technology. Maybe his sensors pick up some strange magical energy. He then meets Harry Potter and they team up to face a new threat that combines magic and technology, like a dark wizard using Stark Industries' tech for evil purposes.
Fanfic ideas combining Harry Potter and King Arthur
One idea could be a fanfic where Harry Potter discovers a hidden portal in Hogwarts that leads him to the time of King Arthur. He could use his magic skills to assist Arthur in battles, perhaps using spells to defeat the enemies that Arthur's knights struggle with. For example, Harry could use the Stunning Spell to incapacitate a large group of invaders.
Fanfic ideas combining LotR, Harry Potter and nanomachines?
One idea could be to have nanomachines in the Harry Potter universe that are secretly created by a dark wizard. They could be used to control the minds of students, but the protagonists discover this and use magic inspired by LotR spells to combat it. For example, a Patronus charm with a LotR - like incantation to repel the nanomachine - influenced dark magic.
Fanfic ideas combining Harry Potter and Alma Wade
A third fanfic concept could involve a character from the Harry Potter series stumbling into Alma Wade's world. Let's say Hermione accidentally discovers a portal that leads to Alma's realm. She has to use her knowledge of magic and her wits to survive in this strange new place. Meanwhile, Alma Wade is intrigued by Hermione's magic and they start to learn from each other, with Hermione introducing wizarding spells and Alma sharing her unique powers.
Fanfic ideas combining Harry Potter and Stargate Atlantis
One idea could be to have the wizards from Harry Potter's world discover the Stargate Atlantis technology. Maybe they could use magic to help repair or understand some of the advanced technology in Atlantis. For example, Hermione could use her vast knowledge of spells and ancient runes to decipher the Atlantis control panels.
Fanfic Ideas Combining Arrancar, Ichigo, and Harry Potter
One idea could be a crossover where Ichigo, with his Soul Reaper powers, is somehow transported to the Harry Potter universe. He meets some of the Arrancar there who have also found their way into this new world. They could be causing chaos, and Ichigo teams up with Harry Potter and his friends to stop them. Maybe the Arrancar are attracted to the magic in the Harry Potter world and want to harness it for their own power.
Fanfic ideas combining Harry Potter and Addams Family.
One idea could be that the Addams family somehow ends up in the wizarding world of Harry Potter. Maybe Wednesday Addams could be a transfer student to Hogwarts. She would be really unique among the students, with her strange interests and dark sense of humor. She might not be too impressed with the magic at Hogwarts as she has her own 'creepy' ways of doing things at home.