His abilities in alchemy would be far more advanced. He'd likely be able to create potions and elixirs with ease, having learned from Flamel. Also, his understanding of magical objects, especially those related to the Philosopher's Stone, would be greater.
One possible plot could be that Harry grows up learning ancient alchemy from Flamel. He might be trained in the secrets of the Philosopher's Stone from a very young age, giving him a different perspective on magic compared to his canon self. Maybe he'd have a deeper understanding of life - extension magic and use it to help others in the wizarding world.
His magical abilities would likely develop at a much faster rate. The founders are extremely powerful and knowledgeable. They could guide Harry to discover and master magic that most wizards his age wouldn't even know exists.
Mentally, Harry would be more in tune with the Force. This would give him an edge in sensing danger and the intentions of others. His ability to resist the Imperius Curse might be stronger due to Jedi mental training. Instead of using spells for divination, he could use the Force to foresee events. And his telepathy - like abilities from the Force could be used in place of some magical communication spells.
Harry Potter's character, if raised by Flamel in fanfiction, would be a blend of Flamel's wisdom and his own innate courage. He would be more patient, having learned from Flamel's centuries - long experience. His sense of justice would be more refined, as Flamel could teach him about the long - term consequences of actions. He might also be more independent, as Flamel would encourage him to explore magic on his own terms, while still providing guidance when needed. This would make him a more well - rounded and formidable wizard in the wizarding world.
If raised by Newt, Harry's ability to sense the emotions and needs of magical creatures would be enhanced. This is because Newt has a great understanding of these aspects. Harry might also develop unique magical abilities that are specific to interacting with the habitats of magical beasts, like being able to create or modify suitable environments for them with magic.
His character would likely become more mature. Learning from Flamel, an ancient and wise wizard, would expose Harry to different values and ways of thinking. He might become more patient and less impulsive in his actions.
He would likely become more knowledgeable in alchemy. Harry's always been eager to learn, and with Flamel as his mentor, he'd soak up all that alchemical wisdom. This would make him more confident in his magical abilities.
His magical abilities could develop in a very unorthodox way. In Wonderland, the laws of nature are so different. He might learn to use magic in ways that are more about manipulating the chaotic environment rather than the traditional spell - casting in the wizarding world. For instance, he could use magic to navigate through the constantly changing landscapes of Wonderland.
In such a fanfiction, perhaps Harry would learn ancient and powerful magic from Nicholas Flamel. Flamel, being the creator of the Philosopher's Stone, could teach Harry secrets about alchemy and immortality. Harry might gain new powers and a deeper understanding of magic that could change the course of his battles against Voldemort.
His chakra control would probably be better. In a temple, he might learn meditation techniques that help him master his chakra more effectively. Also, his physical abilities could be more refined in terms of balance and grace, like a monk's movements.