Harry could develop a more strategic side. Since the fight against Titans requires careful planning, he might start thinking more like a military strategist. He would use his intelligence from the wizarding world and combine it with the knowledge of the Attack on Titan universe to come up with new ways to defeat the Titans. This would change his character from just a wizard fighting Voldemort to a more complex strategist in a different kind of war.
In these fanfictions, Harry may also become more self - reliant. In the Attack on Titan world, he can't always rely on his friends from Hogwarts. He has to make new allies and depend on his own skills, both magical and non - magical. This newfound self - reliance could make him a more independent and confident character compared to his original portrayal in the Harry Potter series.
His character might become more hardened. In the world of Attack on Titan, he has to face the constant threat of Titans. So, he may lose some of his innocence and become more battle - ready, like the characters in Attack on Titan.
He often becomes more confident. With a harem around him, he has to step up and be more assertive in his relationships. He might also become more empathetic as he gets to know the different personalities in his harem.
He might be more laid - back. Since Dean has a more easy - going personality compared to some other characters in the Potter universe, Harry could inherit that. He may not be as brooding as the original Harry.
The world of Attack on Titan would experience a major transformation with the introduction of Pokemon. Socially, the relationship between people would change as they bond over their Pokemon. There could be Pokemon centers and Pokemarts within the walls. Economically, a new industry would emerge around Pokemon. In terms of combat, as I mentioned before, different types of Pokemon would bring new tactics. Fire - type Pokemon could set the Titans on fire, ice - type Pokemon could freeze them, and so on. Also, the idea of Pokemon evolution could be incorporated into the story. Maybe the more a trainer and their Pokemon fight Titans together, the stronger their bond and the more evolved their Pokemon becomes, making them even more effective against the Titans.
His character might become more humble. Mormon values often emphasize humility, so Harry could be shown as less prideful compared to his original portrayal. He may be more likely to give credit to others and not take all the glory for his achievements.
It makes Harry more complex. He has to deal with the darker side of his new identity. He might become more reserved as he tries to figure out what it means to be the heir of Slytherin.
His character becomes more confident. Since he was raised by a god, he has a certain level of self - assurance that normal Harry might not have. He may not be as easily intimidated by Voldemort or other threats.
Harry could change in a more complex way. Initially, he might be a bit overwhelmed by the power of the Deathly Hallows. But as he learns to master them, he becomes more self - assured. He may also develop a sense of detachment from his normal life. The Hallows set him apart from his friends in terms of power, and he has to navigate that while still maintaining his relationships. He might also become more strategic, thinking several steps ahead in his battles against Voldemort.
His character becomes more independent. As the son of Artemis, he has a different kind of power and heritage that sets him apart from other wizards. This could lead to him relying less on the help of others and more on his own instincts and abilities. He might also be more secretive about his new powers, which adds a new layer of mystery to his character. For example, he could start to disappear at night to train in the moonlight without telling his friends.
Harry may become more cunning as he is in Slytherin. He might be more guarded in his actions and words.
His magic could change the story drastically. For example, he could use the 'Expecto Patronum' spell to create a powerful Patronus to protect the people from the Titans. This would be a new form of defense that the people in Attack on Titan have never had before.