Dumbledore, if he were still alive in the fanfiction, would be very observant of Voldemort's daughter. He would see her as a key to understanding Voldemort better perhaps. He might try to guide her towards the light, while also keeping a close eye on her in case she has any malicious intentions. And the relationship between her and Harry could develop from one of suspicion to mutual respect as they face various challenges together in the wizarding world.
Voldemort's daughter herself would be in a very difficult position. She might be shunned by many in the wizarding world just because of who her father is. But some might be curious about her. For example, Luna Lovegood could be one of the first to approach her without judgment, which could start a chain reaction of other characters slowly warming up to her. And the Death Eaters might try to manipulate her into following in her father's footsteps.
Harry might be initially cautious about the Triforce. He's used to his wand and magic, so this new, unknown power would be a bit intimidating. But his sense of right and wrong would lead him to explore its potential for good. He would likely try to use it to protect his friends and defeat Voldemort.
Harry would likely be very suspicious of The Joker from the start. He's used to dealing with threats in his own world, and The Joker's erratic behavior would set off alarm bells. Hermione would probably try to study The Joker, looking for a logical explanation for his actions and a way to counter him. Ron, on the other hand, might be a bit more fearful at first but would still stand by his friends. They would initially approach The Joker with caution, trying to figure out if he has any magical abilities or if he's just a very strange Muggle who has found his way into their world.
Sansa, with her refined manners, would initially seem a bit out of place among the more casual Hogwarts students. However, Harry would see past that and recognize her strength. They could interact in a way that Sansa teaches Harry about diplomacy and strategy from her own experiences in Westeros. Harry, on the other hand, could introduce Sansa to the concept of magic as a tool for good. Their interactions would also be shaped by their shared experiences of facing difficult situations and having to make tough decisions. They might even compare notes on how to deal with enemies like the Death Eaters and the Lannisters.
Well, Harry Potter is used to fighting against dark wizards who are often motivated by power and prejudice. Killmonger, on the other hand, is a character driven by his desire for justice in his own way. Their initial interaction might be one of mistrust. Harry would see Killmonger's aggressive methods as potentially dangerous. However, if they could get past that, they could learn from each other. Harry could teach Killmonger about the power of love and friendship in magic, while Killmonger could show Harry a more assertive approach to fighting for what's right.
In a fanfiction, Ginny could befriend the Kirin quite easily. She has a brave and friendly nature. She might offer the Kirin some food that it likes. The teachers at Hogwarts, like Dumbledore, would be very interested in the Kirin. Dumbledore might try to understand the significance of the Kirin's appearance in the wizarding world. He could see it as a sign of a great change coming. And the Slytherin students might either be afraid of the Kirin or try to use it for their own purposes if they were the more devious ones.
Her water - controlling powers could enhance certain spells. For example, a spell that creates a mist or fog could be made more powerful with her help. She could also use her powers to manipulate the water in the air during a Transfiguration spell to make it more effective.
Harry would probably be cautious at first. He's used to dealing with humans and wizards, not demons like Sesshomaru. Sesshomaru, being a proud demon, might seem aloof. But Harry's intelligence and magical skills could pique Sesshomaru's interest. Harry might try to use his magic to understand Sesshomaru better, like using spells to translate Sesshomaru's language if there is a communication barrier.
Hermione would likely be very curious. She'd want to research all about Elsa and how her powers work in relation to Harry's wizardry. Ron, on the other hand, might be a bit more cautious at first. He'd probably make some jokes about Harry being part ice - prince or something. Dumbledore would be very intrigued. He'd see Harry's new powers as an asset in the fight against evil. He might even offer to help Harry explore and control his ice powers better.
They might interact with Jon Snow. Harry could see a kindred spirit in Jon, both being outsiders in some ways. Kreacher might be initially distrustful but would come around. With Daenerys, Harry could be in awe of her dragons, and Kreacher might be cautious. They would also have different reactions to Tyrion. Harry might see his intelligence, and Kreacher might be a bit wary of his Lannister name.
Bastila Shan, being from a more technologically advanced world in some aspects compared to the wizarding world, could introduce new concepts to Harry and his friends. She might talk about the galactic republic and how things work in her world. Harry could then share the history of the wizarding world with her. Their friendship could grow as they exchange these stories, and they could also learn from each other's experiences. For instance, Bastila could teach Harry how to better focus his mind, like Jedi do, and Harry could teach her some unique spells that could be useful in her battles.