He becomes more conflicted. Knowing he's Voldemort's son, he's constantly in turmoil about his true nature. His confidence might waver as he wonders if he's capable of the same evil as his father.
Harry in this fanfiction is likely to be more ruthless. Voldemort's upbringing would make him less empathetic. He may value power above all else and be more willing to use dark magic to achieve his goals. His relationships would also be different. He wouldn't have the same close - knit group of friends as in the original story. Instead, he might be surrounded by Death Eaters or those who follow Voldemort's ideology.
Harry's character could change in that he becomes more of a leader. With the special abilities and heritage from Hecate, he may find himself in situations where he has to take charge. He might also develop a deeper sense of responsibility, not just for his friends but for the wizarding world as a whole. He realizes he has a different role to play now that he is the son of a goddess. Also, he could become more attuned to the more mysterious and darker aspects of magic, which might make him seem a bit more brooding at times.
In these fanfictions, Harry's character transformation is quite drastic. He loses his sense of morality. His loyalty, which was once towards his friends and the good side, now shifts to Voldemort. He becomes more power - hungry, willing to do whatever it takes to gain more power, including using dark magic without hesitation. He also becomes more secretive and manipulative, using his former relationships to further Voldemort's goals.
Harry could become more powerful in a way that scares his friends. Voldemort's training might focus on the Dark Arts, which are powerful but dangerous. This could change Harry's magic style. He may become more solitary as his new skills and knowledge set him apart from his Hogwarts friends who follow a more traditional path of magic.
In 'Harry Potter son of Loki' fanfiction, Harry changes significantly. His sense of identity is greatly shaken. He no longer just sees himself as a simple wizard. He now has this connection to Norse mythology. This makes him more curious about different forms of magic and otherworldly things. He may become more of an outcast as well, since his heritage is so different. But this also makes him stronger in some ways. He has to rely on himself more and develop his own unique set of skills and powers that come from both his Potter and Loki lineage.
In this fanfiction, Harry's change is quite significant. Firstly, his view of himself and his place in the world is completely altered. Instead of just being a wizard, he is now part of something much bigger. This new identity gives him a different kind of courage. He's not just fighting for the wizarding world against Voldemort, but also has a connection to Asgard. His relationships with his friends also change. They might see him in a new light, and he might have to deal with their different reactions. He could become more of a leader, using his new powers and status to inspire others. And his magic might even be influenced by his Asgardian heritage, making it more powerful or having different manifestations.
If Harry Potter was Voldemort's son in fanfiction, it would completely change the story. Firstly, the relationship between Harry and Voldemort would be extremely complex. Instead of being arch - enemies, there would be a strange family bond. Harry might struggle with his identity more. He would have to deal with the fact that his father is the most evil wizard. The Hogwarts faculty might also treat him differently. They would be more suspicious of him and his motives, fearing that he might inherit Voldemort's evil ways. Also, his friends might have a hard time accepting this new truth about him.
He might change in terms of his magical abilities. Maybe the Malfoy family focuses on different types of magic than what Harry was exposed to in the original story. So, he could be more proficient in dark arts - adjacent magic, but also struggle with the moral implications of using such magic. He may have to reevaluate his own identity and what it means to be a 'good' wizard.
Well, it might make him more cynical at first. After all, he has just absorbed the essence of the most evil wizard. But then he could use this newfound darkness within him to better understand the bad in the wizarding world and fight it more effectively.
It changes the canon by introducing a new form of interaction between Voldemort and Harry. Instead of just the typical battles and mind - reading attempts we see in the original books, the 'plugging' concept adds a more invasive and direct connection. For example, Voldemort could directly influence Harry's thoughts and actions in ways that were not possible in the canon.