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.
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.
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.
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.
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.
Well, the plot could involve Loki disguising himself as a human to get closer to the mortal. He might start by observing the mortal from afar, intrigued by their unique qualities. As he gets to know them, he begins to feel emotions he's never experienced before. There could be a conflict when the mortal discovers Loki's true identity, but eventually they overcome it through love.
In fanfiction, Tony Stark and Loki often make for an interesting pairing. Their personalities are quite different. Tony is a genius inventor, a bit of a playboy, and very human in his flaws. Loki, on the other hand, is a complex Asgardian with his own motives and a penchant for mischief. Fanfiction writers might explore how their different worlds collide. Maybe Loki's magic and Tony's technology could either clash or combine in unique ways. For example, they could be forced to work together against a common enemy, leading to a begrudging respect for each other.
I really like 'A Meeting of Minds'. In this fanfiction, Loki and Tony start off as adversaries but as the story progresses, they find common ground and a unique bond forms. The author does an excellent job of writing their dialogues, making it feel very real.