It could also change his relationships. His friends might be worried about this new and rather extreme power he has. They might question his motives and whether this is the right way to deal with the problems in the wizarding world. On the other hand, his enemies would definitely be more cautious around him.
There would be ethical implications as well. Creating clones might be seen as a form of playing God in the wizarding world. There could be debates about the rights of these clones. Are they just tools for Harry to use? Or do they have their own identities and rights? And how would the wizarding society as a whole deal with this new form of magic that has such far - reaching consequences?
Definitely Hermione. Her intelligence and vast knowledge of magic would be a great asset if cloned. She could help solve complex magical problems and come up with strategies in battles.
He could have found a magical artifact. There are many artifacts in the Harry Potter world that have strange and powerful abilities. It could be that this artifact has the power to create clones. He figures out how to use it, perhaps with the help of Hermione who is good at researching such things. And then he starts creating his clone army.
There are multiple implications. First, from a moral perspective, it goes against the values that the Harry Potter series represents. Second, it can be considered a form of copyright misuse as it uses the characters and world created by J.K. Rowling in a way that she did not intend. Also, it can make the fandom environment uncomfortable for many legitimate fans who are interested in the real themes of the series like magic, adventure, and friendship.
In the 'Harry Potter makes a clone army fanfiction', perhaps Harry creates the clone army to protect Hogwarts. He might use some ancient magic spells he discovers in the library. These clones could be modeled after the greatest wizards in history, like Merlin. They would bring a whole new level of defense to the school against the dark forces.
Well, it could be really strange for him. He might find some of the interpretations of his life and adventures quite off - putting or amusing. Maybe he'd be shocked to see how some fans have romanticized his relationships in ways he never thought of.
He might face opposition from the school authorities or other wizarding institutions. They could see his army - building as a threat. Also, finding resources to train and equip the army could be difficult. Magic items and training grounds are not easy to come by. And he has to keep the existence of the army a secret from the Death Eaters, which adds another layer of difficulty.
When Harry can create portals in fanfiction, it often means a new level of freedom for him. He's not restricted by the normal means of transportation in the wizarding world. But this also brings challenges. He has to learn to control this power properly, and there could be unforeseen consequences. For instance, the portals might accidentally lead to dangerous or unknown places, and he has to figure out how to deal with that while still using this ability to his advantage.
If Harry killed dementors in a fanfiction, it could have several implications. For one, it could be a sign of his growth and mastery of magic beyond what was shown in the books. It might also lead to a different relationship between him and the Ministry of Magic. Since dementors were used as guards in Azkaban, their deaths could cause chaos in the prison system. Additionally, it could change the perception of the dark side in the wizarding world, as dementors are a symbol of the darkest elements.
In fanfiction, if Harry Potter joins the army, he'd likely bring his magical skills. He could use spells for things like reconnaissance, making invisible barriers for protection, or even using the Patronus charm to boost morale. His experience fighting Voldemort would give him an edge in combat situations, and his leadership skills developed during his Hogwarts years would make him a valuable asset in military strategy and inspiring his comrades.
In a fanfiction where Harry Potter leads an army, he would need to be a great leader. He'd have to inspire his troops, which would include people like Hermione and Ron. They could use their knowledge of magic and friendship to hold the army together. The army could also include some unexpected allies, like the giants or the centaurs. This would change the power dynamics in the wizarding world and could lead to a quicker end to the war against Voldemort.