His sense of humor would likely be different. Sirius has a bit of a mischievous streak, and Harry would pick up on that. He might be more prone to making jokes and playing pranks in a more light - hearted way compared to the somewhat more reserved Harry we know from the original story. Also, Harry would be more trusting of others in general, especially those in the wizarding world, as Sirius would introduce him to a more positive side of it from the start.
If Harry was raised by Sirius, his personality would be more rebellious. Sirius was always against the traditional ways of the wizarding world. Harry would be influenced by this and might question authority more often. Also, he would be more confident as Sirius would encourage him to be himself and use his talents. Harry would grow up with a stronger sense of self - worth, knowing that he was loved and supported by Sirius.
He'd probably be more confident. With Sirius and Remus as his guardians, he'd have two strong male figures who believe in him wholeheartedly. Sirius's boldness and Remus's wisdom would rub off on him. He might be less hesitant in taking risks and more assertive in his actions.
He might be more feral. Growing up with a monster, he could lack some of the social graces that a normal upbringing in the wizarding world would provide. He may be more direct and less concerned with propriety.
He might be more laid - back. Canadian culture is often seen as more relaxed, so Harry could have a calmer demeanor. He wouldn't be as quick to get into arguments or be as impulsive as he sometimes was in the original story.
He'd probably be more sophisticated. The Delacour family is known for their elegance and grace. Harry might have a more refined way of speaking and acting compared to his canon self. For instance, he would be more likely to use formal French wizarding greetings.
His personality would likely be more reserved and calculating. Growing up with the Malfoys, he'd be taught to keep his emotions in check and think before acting. He might be more aloof towards others outside of the pure - blood circle at first.
Harry would probably be more rebellious. Remus and Sirius are not exactly the rule - following types. They've both had run - ins with the law in the wizarding world. So Harry would grow up seeing that sometimes breaking the rules is necessary for doing what's right. He might be less hesitant to take matters into his own hands.
Harry might be more confident in his pure - blood heritage. Since Dorea Black would likely educate him about it, he wouldn't feel as out of place among the pure - blood families as he did in the original story. He may carry himself with more pride, but not in an arrogant way.
His Hogwarts experience would be very different. Firstly, he would likely enter Hogwarts with a much higher level of magical knowledge. James and Sirius could have taught him a great deal before he started school. So, he might be ahead in classes like Transfiguration and Defense Against the Dark Arts. Secondly, his social status would be different. Everyone would know he is the son of James Potter, a popular and talented wizard. This could lead to him being more of a center of attention, and he might have a different group of friends. Instead of Ron and Hermione at first, he could befriend students from more well - known wizarding families.
His personality would be a blend of Snape's cynicism and his own inherent goodness. He might be more introverted, spending more time in study and self - reflection. Harry would also have a deeper understanding of the darker side of magic and the wizarding world, which could make him seem a bit more brooding. He'd still be brave, but his bravery would be more of a quiet determination rather than the brash kind we see in the original books.