They could be into fanfiction that gives them different powers or abilities. For instance, a fanfiction where Tony has magical powers in addition to his technological prowess, and Loki gets some new form of technology - based magic. This would open up new storylines and adventures for them.
They might love adventure - themed fanfiction. In such stories, they could go on epic quests together, using their unique abilities. For example, Tony with his high - tech gadgets and Loki with his magic. It would be exciting to see them team up against powerful foes in a fictional universe created by fanfic writers.
Another reason could be the creativity of the fanfiction community. There are so many different interpretations and ideas in fanfiction. Tony and Loki, being characters with a lot of potential for different stories, would enjoy seeing all the creative ways fans reimagine them and their worlds.
Another theme is redemption. Loki, with his past misdeeds, often finds a form of redemption through his relationship with Tony. Tony, in turn, may also find a new purpose or a more softened side to his personality. It's about two broken or flawed characters making each other better. For example, in many fics, Loki's magic and Tony's technology combine in interesting ways to solve problems, symbolizing their union.
In the fanfiction, Loki may have developed a sense of respect or even friendship for Tony. They are both very intelligent characters. Loki might admire Tony's ingenuity and courage. So when he realizes that Tony is in danger in Siberia, his new - found feelings for Tony drive him to save his life. Also, Loki might be bored with his usual villainous ways and wants to do something good for a change, and saving Tony seems like a good start.
Natasha Romanoff would be an interesting character to include. She's very perceptive and could be the one to first notice the change in Loki's behavior towards Tony. And then there's Bruce Banner. His scientific mind could interact with both Loki's magic and Tony's technology, and he could also offer some unique perspectives on their relationship, perhaps warning Tony about the risks of getting involved with Loki.
One possible plot could be Loki initially trying to use Tony for his own gain but then truly falling for him. Maybe Loki, in his usual sly way, gets close to Tony to access some of Stark's technology, but as time passes, he discovers Tony's charm, intelligence and vulnerability, and his feelings turn sincere.
One common theme is the 'opposites attract' concept. Loki, being a god from Asgard with his mischievous nature, and Tony, a brilliant human inventor. Their differences make for an interesting relationship.
One common theme is the clash of personalities. Loki is often seen as the mischievous and complex Asgardian, while Tony is the brilliant and sometimes egotistical human. Their interactions are full of sparks due to these differences.
One common theme is the exploration of their differences. Tony is a tech - savvy human, while Loki is a powerful Asgardian (sort of). Their different backgrounds lead to interesting interactions and conflicts.
At first, it would be rocky. Loki is used to being a trickster and Tony is a bit of a control freak. But over time, they'd start to respect each other. Loki would see Tony's intelligence and resourcefulness, and Tony would see Loki's power and potential for good. Eventually, they'd become like family, looking out for each other.
Peter would likely inherit a combination of powers. From Tony, he could get a genius - level intellect for engineering and technology. This would enable him to build and upgrade advanced gadgets. From Loki, he might inherit the power of illusion and some degree of shape - shifting. So he could deceive his enemies or change his appearance to blend in during missions.