The levels of Magic Awakening in Harry Potter were as follows: Beginner Duelists, Rookie Duelists, Elite Duelists, Outstanding Duelists, Top Duelists, Chief Duelists, Epic Duelists, Legendary Duelists, Honorary Masters, and Grand Duelists. Each rank had a corresponding point requirement. For example, a rookie duelists required 225 points, an elite duelists required 825 points, a chief duelists required 3450 points, an honorary master required 6150 points, and a grand master required 7050 points. There was also a pattern to the difference in points between the ranks. For example, the difference in points between the outstanding duelists and the legendary duelists was 150 points.
Well, it could make Harry feel a strange connection to the spirit world at Hogwarts. He might be more attuned to the ghosts there, seeking advice from them as if they were his parents. It could also make him a bit of an outcast as his situation is so unusual. Maybe he'd have special powers related to interacting with the spirit realm that others don't have.
Well, it could be a completely new character created specifically for this fanfiction. Maybe an elf or a human from Middle - Earth who has some sort of special connection with Harry.
Harry may also develop a greater sense of responsibility. Knowing that Dumbledore has chosen him as an apprentice implies a certain level of trust and importance. He would feel the need to live up to Dumbledore's expectations and use his new - found knowledge and skills to protect the wizarding world. He could start to take on more leadership roles and be more proactive in the fight against the dark forces.
Harry's character could develop in terms of his cultural understanding. Fleur is from a different wizarding culture (French - based). As her bodyguard, he would be exposed to her traditions, language, and magic. He might start to pick up some French phrases and understand the nuances of Beauxbatons magic. Emotionally, he would become more empathetic towards Fleur's situation. He would see her not just as a beautiful Veela but as a person with her own dreams and fears. This new - found empathy could also make him a better friend and ally to others in the wizarding community.
He could develop a darker side to his personality. Learning from Voldemort, he may become more ruthless in achieving his goals, even if those goals are still ultimately good. For instance, he might be more willing to use unethical means to defeat other dark wizards. But at the same time, he would also be constantly struggling against this new - found darkness within him. He would be in a battle not just with external enemies but also with his own changing self.
It could be Draco Malfoy. In some fanfictions, they put aside their differences and develop a relationship. Sirius would be very surprised as he used to see Draco as an enemy. But seeing Draco's growth and his love for Harry could change Sirius' view.
Well, in fanfiction, anything can happen. Just because it says Harry is Uryu's brother doesn't necessarily mean it's going to be a traditional brother relationship. It could be a metaphorical brotherhood, or it could be a result of some crazy plot device like a cross - over between two different universes. So, it really varies from one fanfiction to another.
Harry's character could become more confident. Knowing he has such a powerful ancestor like Gilgamesh might boost his self - esteem. He may also become more assertive in his actions and decisions.
I'm not sure there are a lot of fanfics specifically about Colin and Harry's mother. However, it could potentially explore an interesting relationship. Maybe Colin discovers something about Lily Potter's past that no one else knew, which could lead to an adventure in the wizarding world. It could also show how Colin's admiration for Harry extends to his family.