It can make him more of a physical combatant. Instead of relying solely on his wand, he becomes more hands - on. This can show a more assertive side of Harry.
In fanfiction, using martial magic might make Harry Potter seem more versatile. He's not just the 'Boy Who Lived' who uses standard spells. He can now handle close - range combat better. This could lead to new relationships and respect from his peers. For example, some characters who previously thought of him as just a powerful wizard might now see him as a well - rounded fighter. It also might change how he approaches battles, thinking more about strategy in a physical sense as well as magically.
In many fanfictions, Harry's use of Legilimency makes him more perceptive. He becomes better at reading people, which means he can avoid being deceived easily. For example, in some stories, he can tell when someone is lying to him just by a quick mental probe. This also makes him more cautious in his interactions as he realizes the power and potential misuse of this ability.
Martial Magic can greatly change power dynamics. If a character masters Martial Magic, they can often overcome opponents with more traditional magic skills. For example, they can quickly close the gap in a fight against a long - range spellcaster.
It might make him seem more refined. Using a rapier is a rather elegant form of combat compared to just using a wand for spells. So it could give Harry an air of sophistication.
His relationships might change. Some of his friends might not recognize him at first without his glasses. This could lead to some initial awkwardness but also force him to re - establish his connections in a new way. He might also attract new attention from characters who were not interested in him before, either romantically or as potential allies or enemies. This new social dynamic could cause him to grow as a character and develop different aspects of his personality.
It changes his character development a great deal. First, it gives him an edge that he didn't have before. This could lead to overconfidence initially, but as he faces new challenges related to magic, he'll learn humility. Also, his dreams might expand. Instead of just aiming to be Hokage, he could now strive to master magic and use it for the good of the village in ways he hadn't thought of before. Maybe he'll start to see the world in a different light, not just as a ninja world, but one with magical elements as well.
In some fanfictions, Harry Potter uses his strong emotions and willpower to perform wandless magic. For example, in times of extreme danger or when he has a very intense desire to protect someone, he can tap into his inner magic without the need for a wand.
Often, he uses his deep understanding of magic theory. Since he's learned a great deal about magic at Hogwarts, he can apply that knowledge in a wandless way. He might use incantations silently and with just a wave of his hand or a focused thought, as seen in fanfictions like 'The Wandless Path of Harry'. Here, he spends a lot of time researching and practicing wandless techniques based on the spells he already knows.
It makes him more cautious. Since he knows the law, he's aware of the consequences of his actions more than ever. So he might think twice before using certain spells or getting involved in risky situations.
She can become more sympathetic. Sometimes in fanfiction, authors might give her a tragic past that makes her actions more understandable. For example, if she was wronged by the wizarding community in the past, it could justify her actions against them in the fanfiction.
He might become more in tune with nature. Since the Phoenix is a symbol of rebirth and nature in the wizarding world, Harry could develop a stronger sense of environmental magic. For example, he could be able to communicate with other magical creatures more easily, not just the Phoenix.