If modern weapons were introduced in Harry Potter fanfiction, it would add a whole new dimension to the story. Harry could use a sniper rifle with a scope enchanted to see through invisibility cloaks. This would give him an edge in combat. Also, modern military tactics could be incorporated. Instead of just relying on spells, they could set up ambushes using landmines (enchanted ones, of course) and other non - magical weaponry. It would make the fight against evil more complex and interesting.
Well, it would be a really strange scenario. Magic and guns don't really go together in the traditional Harry Potter world. But if Harry had a gun, he might use it in a moment of extreme danger when his magic fails him. Maybe against some dark creatures that are immune to certain spells.
Well, he could use it to transform into different alien species and gain their powers. For example, he could turn into a strong and durable alien like Four Arms and be better at fighting Death Eaters. It would definitely change the whole dynamic of the wizarding world as his abilities would be a combination of magic and alien powers.
The plot would change significantly. For one, the final battles against the dark forces would be different. Instead of a wand - only battle at Hogwarts, there could be a full - scale war with modern weapons. The Death Eaters might not be prepared for the firepower of things like machine guns or grenades. It could also change the way characters interact. Hermione might study the mechanics of modern weapons instead of just ancient spells, and Ron could be in charge of weapon supplies.
Well, it could be that Voldemort somehow gets his hands on nuclear weapons. Harry then has to use his magic skills not just to fight dark wizards but also to prevent a nuclear disaster. He might use spells like Protego Maxima on a large scale to shield Hogwarts or other important places from a nuclear blast.
In fanfiction, if Harry had a Nundu as a familiar, it could lead to a whole new set of adventures. The Nundu's strength and wild nature would attract the attention of both good and bad wizards. Harry would need to be extra cautious as having such a powerful and feared creature by his side could make him a target. He might have to train the Nundu to be less aggressive and more obedient. This could involve a long and difficult process. Also, the Nundu could help Harry in exploring new and dangerous places, like the Forbidden Forest, where other creatures might be afraid to go because of the Nundu's presence. It would be a fascinating concept to explore in fanfiction, full of potential for exciting storylines.
In a fanfiction where Harry Potter has the Infinity Stones, his life would take a completely different turn. First of all, the Space Stone would enable him to teleport anywhere in the wizarding world or even beyond. This would make it impossible for his enemies to catch him. The Soul Stone, on the other hand, might have some deep connection with the wizard's soul. Maybe it could help him understand the true nature of magic and his own destiny better. He could use all these stones' powers in combination to bring about a new era of peace and magic in the wizarding world, but he would also have to face the great temptation and potential corruption that comes with such immense power.
If Harry Potter had Magneto's powers in fanfiction, it would completely transform his character. He might not rely so much on his wand for combat. Instead, he could manipulate the metal in the environment, like the suits of armor in Hogwarts. This would give him an edge in duels, as his opponents wouldn't be expecting such non - traditional magic. Also, it could potentially make him a target for those who fear powerful and different abilities, just like Magneto was in the X - Men universe.
If a Harry Potter character had Godzilla as a familiar, chaos would surely ensue. Godzilla's massive size and destructive power would be hard to handle. Hogwarts might not be able to contain it, and it could cause havoc in the Forbidden Forest or even around the school grounds. The Ministry of Magic would probably be in a panic.
He might also be a bit confused at times. Some fanfictions deviate a lot from the real events in his life. For example, if there's a fanfiction where he has a completely different upbringing, it would be strange for him to read about. He could also feel a sense of flattery that so many people are interested in his story and want to create their own versions of it.
He might be really surprised. Fanfiction often contains different interpretations of the characters and the story. He could be amused by some creative ideas, or perhaps a bit confused if the fanfiction goes too far from the original story he knows.