In the original Harry Potter story, Harry was thrust into a world of magic he knew little about and had to figure things out on his own a lot. In a 'Harry Potter raised by Iroh' fanfiction, Iroh would be there to guide him every step of the way. Harry's relationships would be different. He might not have the same friends as in the original, or his relationships with them would be shaped differently. For example, his bond with Hermione and Ron might not be as central if Iroh introduced him to a whole new group of people. And his view of the wizarding world's politics and power struggles would be more nuanced as Iroh would give him a more worldly perspective.
The biggest difference would be Harry's upbringing. In the original, he grew up with the Dursleys who were cruel to him. With Iroh, he'd have a loving and wise mentor from the start. His magical education might be different too. Iroh could teach him magic in a more holistic way, not just the spells Hogwarts teaches. Also, Harry's personality would likely be more serene and less angry, like Iroh's influence on him.
The setting would be very different. Instead of growing up in the Dursleys' dull house, he'd be in the exciting world of the circus. His friends would be circus performers rather than Hogwarts students at first. And his magic might be used in more creative and performance - based ways.
The original Harry Potter story has a very British - centric magical world. But in the 'Harry Potter raised by Pokemon' fanfiction, there could be elements from the Pokemon world which are more global in nature. For example, Harry could have Pokemon friends from different regions. His magical abilities might also be influenced by Pokemon powers. His enemies might not just be Voldemort and his Death Eaters but also those who oppose the mixing of the two worlds. And his relationships with his friends would be different as they explore this new blend of magic and Pokemon together.
The most obvious difference would be his upbringing. In the original, he's raised by the Dursleys in a rather unpleasant environment. But in this fanfiction, with a scarecrow as his caregiver, he'd grow up in a rural, nature - filled setting. His values and views on magic would likely be different. He might not have the same exposure to the wizarding society's norms early on as he does in the original.
The biggest difference would be his upbringing. In the original, he was raised by the Dursleys in a Muggle environment with neglect and abuse. But with Arwen, he'd be in a more nurturing and magical environment from the start. His view of magic would be different, more like the elven view which is more in harmony with nature.
In the original Harry Potter story, Harry had to discover his family's history and the wizarding world gradually. However, if he was raised in Potter Castle in a fanfiction, he would be immersed in it from day one. He would likely have a more natural understanding of magic and its workings. His relationships would also be different. Instead of having Ron and Hermione as his first real friends, he might have made friends with other magical beings or have different relationships with the portraits in the castle that could have guided him. His early experiences would shape him into a potentially more self - assured and magically - proficient Harry Potter, leading to a different trajectory for his adventures at Hogwarts and beyond.
The biggest difference would be in Harry's upbringing. In the original, he was raised by the Dursleys which was bad but still in a relatively normal (albeit cruel) Muggle environment. With Slenderman, it would be a completely abnormal and often terrifying experience. His understanding of good and evil would be skewed. Also, the magic he'd learn and how he'd use it would be different. In the original, magic was mainly for positive things like protecting and helping others. Here, it could be used for more menacing or self - serving purposes.
In the original, Harry was raised by the Dursleys in a rather dull and unloving environment. But with the Mad Hatter, it would be a world of constant chaos and absurdity. Harry's understanding of magic would be shaped by Wonderland - like concepts rather than the traditional Hogwarts teachings.
In the original, Harry was raised in the Muggle world with the Dursleys, which was a rather oppressive environment. But with Lara Croft as his guardian, he'd be in a world of adventure. He'd learn to be more self - reliant and less reliant on the wizarding institutions.
In the original Harry Potter story, Harry is a product of the British wizarding world. But if he were raised in Spain in a fanfiction, everything from his accent to his fashion sense could be different. He might wear Spanish - style robes and have a more Mediterranean look. His magical education would start with a different foundation, perhaps more focused on the history of Spanish magic. His adventures at Hogwarts would also be affected, as he'd bring in elements from his Spanish upbringing, like different types of magic items or methods of solving problems that are unique to Spanish magic.
In the original, Hogwarts is in Scotland. But in this fanfiction, the school could be in a Mexican castle or an ancient temple converted into a school. Harry's enemies would also be different. He might face threats that are specific to the Mexican magical community, like dark wizards with a different motivation based on Mexican history or mythology. His relationships with teachers would be different too, as they would have different teaching styles based on Mexican culture.