Surtur is a powerful and often single - minded being, focused on destruction and chaos. Tony, on the other hand, is a hero who tries to protect the world. So, Surtur might see Tony's attempts at peacekeeping as a nuisance. Tony would find Surtur's destructive nature abhorrent.
A possible plot could be that Surtur has a part of his essence trapped in a piece of Asgardian relic on Earth. Tony discovers this relic and when he touches it, he starts having visions of Surtur. Surtur then starts to communicate with Tony through these visions, asking for his help to be fully reborn. Tony is hesitant but realizes that if Surtur is reborn in the wrong way, it could mean the end of the world. So he decides to work with Surtur, but on his own terms. This could lead to a lot of interesting interactions between the two as they have very different personalities and goals.
Some Asgardians might be curious about this strange boy with a different kind of magic. Loki, for example, might see him as a potential tool or an interesting oddity to play with.
One possible reason could be his feeling of being an outcast. In the original stories, Loki is often treated differently in Asgard due to his nature. He might have felt like he didn't truly belong, which could fuel his hatred. Another reason could be envy. Maybe he saw others in Asgard having things he desired, like power or recognition, and his envy turned into hatred.
The 'Agent of Asgard' fanfic is quite an interesting piece of work. It often delves into the character's journey in a unique way. The fanfic might explore the powers and responsibilities of the Agent of Asgard in more depth than the original source. It could also introduce new storylines and relationships that add a fresh perspective to the whole concept.
The duration of the Asgard story arc is hard to pinpoint exactly. It could range from a few chapters in a comic series to a significant portion of a TV season. Different interpretations and storylines can influence the length significantly.
It could be Sasuke. If he were to turn to the dark side in the fanfiction, his Rinnegan powers could be used to destroy Konoha. He has the potential to be extremely powerful and if he has some sort of vendetta or is influenced by some dark force, he might take his anger out on the village.
Yes, there are likely some out there. Fanfiction is a vast world, and crossovers between different fictional universes like 'Harry Potter' and the concept of 'Prince of Asgard' are not uncommon. You can start your search on popular fanfiction websites such as Archive of Our Own or FanFiction.net.