Well, in this fanfiction scenario, the very essence of Harry Potter's character would be different. His upbringing by the Joker would mean that his understanding of good and evil is blurred. He might see the wizarding world as a playground for his own brand of chaos. His friends from the original story might become his enemies or he might not have any friends at all. The fight against Voldemort would no longer be a central theme. Instead, Harry could be creating his own brand of mayhem. His magical powers could be used in ways that are not in line with the traditional use of magic in the wizarding world. It would be a completely different kind of story, one that is full of dark humor, chaos, and a lack of the moral foundation that the original Harry Potter series is built upon.
The story would be drastically different. Harry's personality would be molded by Klingon values. He'd be more bold and confrontational. His approach to learning magic would be different too. Instead of learning from books in a classroom, he might learn through practical combat - like situations. His relationships with other characters would change. For example, Hermione might not be as close to him as she is in the original, because her studious nature might not be as valued in a Klingon - influenced environment.
The story would be drastically different. Harry might not oppose Voldemort. He'd be on the 'dark side' instead. His Hogwarts experience would be non - existent or very different if he even went there. He'd probably use the dark arts more often.
The social structure around him would be different. Indian society has a complex caste system, and the wizarding world in India might also have some form of hierarchy. Harry would have to navigate this while also dealing with the regular challenges of being a wizard. He might also have different values instilled in him from an early age, influenced by Indian culture like respect for elders and family values.
His story would be drastically different. He might not have the same fear of Voldemort as he would be in a different environment. Instead, he could be facing threats related to Rias' world like other devil clans or powerful supernatural beings.
His view of family would be different. Vikings had a strong sense of clan. So instead of longing for a family like he did in the original story, he'd be part of a large Viking family unit. His magical abilities might be more of a mystery to the Vikings around him, and they could either fear or revere him for it.
The story would be unrecognizable. Harry's upbringing by Freddy Krueger would mean that he has no concept of the love and friendship that are so central to the original Harry Potter story. He'd be used to a world of nightmares and fear. His interactions with the other characters would be full of conflict. For example, he might see his classmates as easy prey rather than friends. His relationship with the teachers at Hogwarts would be strained as they try to understand and correct his behavior. And the overarching plot of the fight against Voldemort would be replaced with something much more sinister as Harry's values are completely different from what they are in the original story.
His personality would change. He'd be more guarded like Elsa. His magical skills could include some ice - related ones. And he'd see the wizarding world from a different perspective, influenced by Elsa's values.
The story would be unrecognizable. His character would be different, and so would his relationships.
His story would change a great deal. He'd have a different support system. Instead of the Dursleys or Hogwarts friends at first, he'd have the Avengers. His view of good and evil might be more influenced by superhero battles. And he'd probably have a different way of handling threats, like using Iron Man's suit to face Voldemort.
In this fanfiction scenario, Harry Potter's story would take a very dark turn. With Darth Vader as his guardian, Harry would be exposed to a world of power and control from a young age. He might not develop the same sense of justice and fairness as in the original story. Instead of fighting against Voldemort to protect the innocent, he could be more interested in ruling over the wizarding world. His magic might also be influenced by Vader's teachings, perhaps becoming more aggressive and less about helping others. His identity as a wizard would be overshadowed by his Vader - influenced upbringing, making him more of an outcast in the traditional wizarding society.