If the wizarding world was invaded by a powerful Muggle - based enemy that was immune to most magic spells. Harry might be forced to pick up a gun as a last resort. He would need to quickly learn how to handle it, and this could add a new layer of tension to the story. The other characters might be divided between those who support his decision to use a Muggle weapon and those who think it goes against the principles of the wizarding world.
Perhaps in a parallel universe where the wizarding and Muggle worlds are more intertwined. Harry could be part of a special task force that deals with threats that involve both magic and Muggle technology. So, carrying a gun would be part of his equipment. He would have to learn how to balance using magic and the gun depending on the situation.
The gun could be a gift from a Muggle friend who doesn't understand the wizarding world but wants to give Harry something to protect himself. Harry might initially be hesitant to use it but then find situations where it becomes necessary, like when facing dark wizards who have put anti - magic shields up.
In a post - war fanfic, Harry could be living in a more integrated wizard - Muggle society. There are still remnants of dark forces, but now the wizarding world is more open to Muggle technology. Harry, being a symbol of protection, decides to carry a gun as an additional means of safeguarding the peace. He trains with Aurors and Muggles alike to master the use of the gun, and along the way, he faces challenges from traditional wizards who oppose this new direction.
A Gun Mage could be a product of a long - lost magical branch. They could be discovered by Harry Potter and his friends during an adventure outside of Hogwarts. Maybe they were hidden away for centuries because their magic was considered too dangerous. Once they enter the main story, their gun - based magic can add a new dimension to battles and problem - solving, like using the force of a magic bullet to break through powerful enchantments.
It would be a very strange and out - of - character concept. In the wizarding world of Harry Potter, magic is the main power source. A gun would be a completely foreign and Muggle - like object. However, it could lead to some interesting scenarios where Harry has to deal with situations that magic can't solve and has to rely on this Muggle weapon, like if he were in a non - magical territory and faced with non - magical threats.
It could be a dark wizard who has found a way to nullify magic in certain areas. This antagonist forces Harry to rely on the gun as his magic is useless against him in those zones. He might be a former Death Eater who has new, more dangerous powers and a vendetta against Harry for his role in the downfall of Voldemort.
Perhaps it's a story where Harry Potter is transported to a world that combines elements of the wizarding world and a modern, gun - using society. He pulls a gun to protect his friends when they are attacked by some unknown and powerful force that magic has no effect on. This could lead to him having to learn about the new rules and ethics of using such a weapon while still relying on his magical abilities.
He could use his invisibility cloak for stealth missions with the Avengers.
The way Gun Kata fits into the 'Harry Potter' universe in fanfic is through creating unique storylines. It can introduce a different type of action and strategy. For example, a group of wizards might form a special unit that combines magic and Gun Kata. They could use spells to enhance their Gun Kata abilities or use Gun Kata to get close to an enemy before using a powerful magic spell. This combination of two different combat concepts can lead to very exciting and unpredictable stories.
Perhaps Snape is under a spell or a magical obligation that makes him carry Harry in such an unusual way. This could lead to comical situations at first, with Harry being confused and Snape being grumpy about it. But then, they might find themselves in a magical location where they have to rely on each other. Snape's knowledge of magic and Harry's natural courage could combine to solve a mystery or defeat a foe. For example, they could be trapped in an ancient, enchanted forest, and by working together, they find a way out and also uncover a hidden power or artifact.
The plot would be different in that it would introduce a whole new element of danger. A gun could potentially kill even the most powerful wizards instantly. This would change the balance of power. Also, Harry would have to deal with the moral implications of using such a weapon in a world that has its own set of rules about combat. He might be seen as a revolutionary or a threat depending on who in the wizarding world he encounters.
The concept of Animagus in an Avengers fanfiction could also be used for character development. Suppose an Avenger discovers they have the potential to be an Animagus. This would open up a whole new side of their personality. They would have to learn about magic, which is very different from their usual super - power knowledge. This could lead to interesting interactions with other characters, like Thor, who might be intrigued by this new form of power.