The original plot has Harry growing up with the Dursleys, which is bad but not as extreme as with Dementors. In the fanfic, his entire outlook on life would be different. He may not have the same sense of justice and heroism as in the original. His friends might not be the same either, as he would be a very different person. His relationship with Dumbledore would also change, as Dumbledore might not be able to reach him as easily.
The deviation would be huge. Harry's growth and character arc in the original is based on love, friendship, and the fight against Voldemort. In the fanfic, love is absent from the start. He might not even believe in the power of love as a weapon against evil. His relationship with Hogwarts itself would be different. Instead of seeing it as a haven, he could view it as just another place full of potential threats. His interactions with the Weasleys and Hermione would be completely transformed. They might not even become his friends initially, as he would be so different from the Harry they know in the original story.
In the original plot, Harry has some positive influences early on. In this fanfic, there are none. So, his magical development could be way off. He might not learn spells in the same order or with the same enthusiasm. His understanding of the wizarding world's history and values would be skewed. Also, his enemies might not be Voldemort - centric at first. He could see the Dementors or other dark forces closer to home as his main foes. His journey through Hogwarts would be full of more internal struggles than the external ones against Voldemort in the original.
Well, it would be a really dark take. Harry would probably be constantly in a state of near - despair. Since Dementors are soul - sucking creatures, he might have a hard time forming normal relationships. His view of the wizarding world would be very different from the original story. He might see it as a place full of threats and darkness rather than a place with some good in it. And his Patronus, if he could even produce one, would be very weak or have an unusual form.
One possibility is that Harry would grow up to be a very different person. Dementors are creatures of despair, so he might be more withdrawn and less trusting. He could also have some very dark powers, having been exposed to the dementors' influence for so long.
The plot would likely be very different. In the original, Harry was raised by the Dursleys, which led to a lot of his character development. In fanfiction - raised Harry, he could be raised by wizards who teach him magic from a young age, so he'd be more advanced when he gets to Hogwarts. His understanding of the wizarding world would be different too.
The magic system would be different. In the original Harry Potter, magic is mainly about spells and potions. But with Link as a mentor, Harry might use magic in a more physical and instinctive way. For example, he could combine magic with sword - fighting skills. Also, his social skills would be affected. Link is often a lone wolf, so Harry might be less sociable and more independent compared to the original Harry.
In the original Harry Potter story, Harry is raised by the Dursleys, which gives him a sense of being an outcast in the Muggle world. But if raised by Frieza, he'd be in a completely different and far more dangerous environment. He wouldn't have the same kind of innocence as in the original. His moral compass would be shaped by Frieza's values, which are very different from those in the wizarding world. Also, his relationships would be different. He wouldn't have the close friendships with Ron and Hermione in the same way. Instead, he might view others as either threats or tools for his own power - seeking goals.
The biggest deviation would be in Harry's character. In the original, he is kind - hearted and values friendship and justice. Raised by Sephiroth, he could be more cold - hearted. Also, the power dynamics would change. Harry might not rely on the same magic sources as in the original but instead on Sephiroth - inspired powers.
The most obvious deviation would be his upbringing. Instead of being bullied and neglected by the Dursleys, he'd be in a nurturing environment. This would likely make him less timid and more self - confident. Also, his knowledge of the wizarding world before Hogwarts would be far greater.
In the original Harry Potter series, Harry is a part of the British wizarding community, with its own set of rules, traditions, and power structures. However, in the 'Harry Potter raised by Zeus' fanfiction, he would be part of the Greek mythological cosmos. His upbringing under Zeus would mean that his values, his understanding of power, and his relationships would all be different. For example, in the original series, friendship at Hogwarts was important, but in this fanfiction, he might have a different set of relationships with demigods and other creatures from Greek mythology. His concept of heroism would also be influenced by Greek ideals rather than the more modern - day heroism presented in the original Harry Potter books. Moreover, the way magic is perceived and used would be distinct, as Greek magic has its own unique characteristics compared to the magic in the wizarding world.
In this fanfiction, the way Harry is perceived by others would change a great deal. In the original, Harry was often seen as a hero - in - the - making boy. As a girl, she might be seen as more delicate or have different expectations placed on her. This would impact how she is treated by the Ministry of Magic, other students, and even the magical creatures. Also, her magical abilities might be explored in a different light. Maybe she would be more intuitive in her magic due to her different upbringing as a girl.
The biggest deviation would be in Harry's character. In the original, Harry is inherently good - hearted. But with Crowley as his mentor, he might be more morally grey. His decisions would be based more on self - interest rather than the common good.