The magic in the Harry Potter world could be linked to the religious - based powers of Alexander Anderson. For example, some of the spells in Harry Potter could be seen as having roots in the same kind of divine or spiritual energy that Anderson wields. This could lead to a situation where Anderson is either trying to understand the magic in the wizarding world as a different form of his own power, or he could be trying to convert wizards to his way of thinking about the power source.
The two worlds could merge through a magical accident. A wizard in the Harry Potter world could be experimenting with a new spell that goes wrong and creates a portal to Anderson's world. Anderson then steps through and is immediately plunged into the chaos of the wizarding world. He has to navigate the new environment, deal with the magical creatures, and figure out how to get back home, all while interacting with the likes of Harry Potter and his friends.
One idea could be a crossover where Alexander Anderson, with his combat skills and religious fervor from his own universe, is transported to the Harry Potter world. He might initially be seen as a threat due to his extreme methods, but then he teams up with the Order of the Phoenix to fight against dark wizards who are dabbling in some form of dark magic that has religious connotations in his view.
If 'Harry Potter is Alexander Anderson fanfiction' were true, it would be a very odd situation. The 'Harry Potter' series is set in a world of wizards, witches, and magical creatures, with a focus on things like the fight against Voldemort. Alexander Anderson is from a different kind of story. If it were fanfiction, we might see characters like Harry Potter using abilities similar to Anderson's, which would completely change the nature of the 'Harry Potter' story. The whole Hogwarts system and the way magic is taught and used would likely be disrupted as elements from Anderson's story intruded. It would be a very different 'Harry Potter' experience, and probably not one that most fans of the original would welcome.
No way. The 'Harry Potter' series has been carefully crafted with its own story arcs, character developments, and world - building. Alexander Anderson belongs to a different fictional realm. A fanfiction implies a derivative work based on an existing one, but these two are so disparate that it doesn't make sense to consider 'Harry Potter' as a fanfiction of Alexander Anderson. They have different tones, different target audiences, and different overarching stories.
Hermione might be a strong candidate. She is extremely intelligent and has a thirst for knowledge. In a merged world, she would quickly study the new elements from the God of War universe. She could combine her magic knowledge with the new combat or magical concepts from God of War. For example, she might figure out a way to use the power of the Greek gods in the wizarding world, making her a very powerful and unpredictable force.
Well, you could start by having a portal or some sort of magical accident that links the two settings. For example, a misfired spell in Hogwarts could open a gateway to Nerima. Then, the characters from both worlds would start to interact. The Hogwarts students might be fascinated by the strange martial arts and curses in Ranma 1/2, while the Ranma 1/2 characters could be amazed by magic wands and spells.
The magic system in Harry Potter can be blended with Grimm's use of magic in its tales. In Grimm, magic is often more wild and unpredictable. In a fanfiction, Hogwarts could start to experience a shift in its magic due to an influx of Grimm - like magic. Spells could start to misfire in strange ways, like turning into animals from Grimm tales instead of the intended effect. This would force the students and teachers to adapt to this new, more chaotic magic, while also trying to keep Hogwarts safe from the threats that come with it, both from Voldemort's side and from the Grimm - inspired magical anomalies.
One idea could be a crossover where Naruto's world is invaded by some dark forces similar to those Anderson has faced. Naruto, with his ninja skills, teams up with Anderson, who uses his holy powers. They start to learn from each other's fighting styles and develop a mutual respect. Naruto could teach Anderson about chakra and how to use it in combat, while Anderson could show Naruto the power of faith - based combat and the use of holy relics.
Another approach is to have them meet in a parallel universe. In this universe, the rules of both the Star Wars and Harry Potter universes are blended. Harry might have a natural affinity for the Force because of this new world, and Anakin could discover he has a latent magical ability. They would then learn from each other and become a united front against any threats in this strange new place.
By introducing Yellow Lantern elements into Hogwarts. For instance, a Yellow Lantern could visit Hogwarts and start influencing students with the power of fear. This would create chaos and force the professors and Harry Potter and his friends to deal with this new threat.
Harry would be on guard at first. He has faced many dark threats in his life, and Madara would seem like another one. But as he gets to know Madara better, he might see some similarities in their struggles. Dumbledore would likely be very interested in Madara. He would try to understand Madara's motives and see if he could be an ally or a threat to the wizarding world. Dumbledore would be cautious but also open - minded in dealing with this new and strange character.