The plot could revolve around Harry's struggle to fit in. Since he is a demigod raised by Bellatrix, he is likely to be an outcast in both the wizarding and demigod communities. The wizarding world may not understand his demigod powers and the demigod world may not accept him because of his connection to Bellatrix. He might have to go on a journey to find others like him or to find a place where he truly belongs. Along the way, he could face many challenges and enemies, both magical and perhaps related to his demigod status.
His character development could be a long and complex process. At first, he might be obedient to Bellatrix due to her being his caregiver. But as he discovers more about his demigod side, he could start to question her teachings. He might become more independent and start to form his own moral code. For example, he could learn about the demigod concept of balance and try to apply it to the wizarding world, which is often filled with black - and - white views of good and evil. This would lead to him having a more nuanced view of the world around him.
The plot could involve Harry growing up with Bella and slowly realizing he's different. For instance, he might be stronger and faster than the other kids in their neighborhood. As he gets older, strange things start to happen around him, like plants growing abnormally fast when he's angry. Bella then decides it's time to tell him about his demigod nature.
One possible plot twist could be that Harry, under Bellatrix's influence, becomes a much darker and more ruthless wizard. Bellatrix might train him in the Dark Arts, and he could end up being a sort of anti - hero. He might have a completely different view of the wizarding world and be at odds with his former friends from Hogwarts.
If Harry Potter was raised by Bellatrix, he would likely grow up in a very dark and twisted environment. Bellatrix is a Death Eater, so Harry would be exposed to the dark arts from a young age. His values and beliefs would be very different from the ones he has in the original story. He might not have the same sense of right and wrong, and could be more inclined towards the use of dark magic.
If Hermione was raised by Bellatrix in a fanfiction, it would be a very dark and twisted story. Bellatrix is a cruel and insane character. Hermione could be forced to participate in dark deeds. But on the other hand, Hermione's intelligence might make her find a way to resist Bellatrix's influence secretly. She could use the knowledge of the dark magic she gains to better understand how to fight against it in the long run.
Harry would likely learn dark magic. Bellatrix is a master of the dark arts, so she would teach Harry curses and hexes that are not typically taught at Hogwarts. He might learn how to use the Cruciatus Curse effectively, for example.
Well, perhaps Harry would grow up with superpowers. Supergirl could teach him about using his powers for good. He might become a sidekick of sorts, fighting crime in their city. They could have a really cool dynamic where Harry is learning all these new things from Supergirl.
If Harry was raised by Bellatrix, his character would likely be much darker. Bellatrix is a Death Eater, so Harry would be exposed to dark magic and Voldemort's ideology from a young age. He might be more ruthless and less empathetic compared to the Harry we know. For example, he might not value friendship as highly since Bellatrix doesn't really understand the concept of true friendship. Also, his view of the wizarding world would be skewed towards the pure - blood supremacist ideas that Bellatrix adheres to.
Harry could become more secretive and distrustful. Growing up with Bellatrix, who is part of the Death Eaters and has a lot of secrets, Harry would learn to keep things to himself. He may not trust others easily, even those who seem friendly, as he has been brought up in an environment full of lies and hidden agendas.
One possible plot could be that Harry grows up in a loving and magical home. He gets to learn magic from his parents at a very early age. His father, James, might teach him Quidditch skills right in their backyard. His mother, Lily, could pass on her knowledge of potions and herbology. They would also protect him from the dark forces that are still out there, perhaps leading to some epic battles where the family stands united against the remnants of Voldemort's followers.