His personality could become more complex. In the wild fanfic world, he may face more moral dilemmas while growing up. This could make him more cynical at times. For instance, if he discovers that some of the people he trusted were actually hiding secrets that could harm others, it would shake his trusting nature. On the other hand, he might also become more empathetic towards his enemies if he learns about their difficult pasts, which is different from his rather straightforward view of good and evil in the original books.
Growing up in an orgpange fanfic could make Harry more independent. Since the orgpange world might have its own set of rules and challenges, he'd have to rely on himself more often. For instance, if the orgpange magic is not well - understood by the regular wizarding community, he'd have to figure things out on his own. This would lead to him being more self - reliant and confident in his own abilities. Also, his values could shift. He might place a higher importance on the preservation of orgpange - related things than on some of the more traditional wizarding concerns.
In a wild fanfic where Harry Potter grows up, he might have all sorts of out - of - the - ordinary adventures. Maybe he'd encounter new magical creatures not in the original books. He could also develop different relationships with his friends. For example, his friendship with Ron and Hermione might take unexpected turns, like having a big fight over a new magical discovery and then reconciling in a more dramatic way.
His magical education would change. American schools might focus more on practical magic for self - defense from an early age, given the more dangerous magical environment in some fan theories. So Harry could be more battle - ready sooner.
His personality would likely become more complex. He could be more withdrawn in some ways, as he might not fully trust others easily. Since Lucifer is associated with power and manipulation, Harry might also show tendencies to manipulate situations to his advantage. He would have a different view of loyalty, perhaps seeing it more as a tool for his own ends rather than an inherent virtue.
Well, Harry could become a bit more of a joker. Bars are often places for light - hearted banter. He might start making more jokes, using his experiences at Hogwarts as fodder. He could also become more street - smart, learning how to deal with different types of people from all walks of life. His Gryffindor courage would still be there, but it might manifest in different ways, like standing up to a rowdy group of customers who are causing trouble.
He would likely be more attuned to the darker and spookier aspects of magic. His personality might be a bit more brooding, as he's surrounded by the eerie atmosphere of Halloween Town all the time.
His sense of responsibility would likely increase even more. Harry has always been responsible, but as a priest, he would feel accountable for the spiritual well - being of others. He would become more solemn and less impulsive perhaps. His Gryffindor impulsiveness might be toned down as he takes on a more serious religious role.
He might become more reserved. Shinobi are often taught to keep their emotions in check, so Harry would be less likely to be as openly angry as he sometimes is in the original story.
His personality would be more aggressive. Yautja are hunters, and growing up with them, Harry would adopt their aggressive nature. He would be more direct in his actions and less likely to hesitate.
He would become more rebellious. Harry has always had a bit of a rebellious streak in the original series, but as a pirate, it would be amplified. He'd be more likely to question authority and do things his own way without waiting for permission.