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 main character could be a young scientist. This person could be intrigued by Loki's arrival and his other - worldly powers. They might try to study him in a non - invasive way, which could lead to some interesting interactions between them. Another character could be a street - smart kid who Loki befriends. The kid shows Loki the ropes of the city and in return, Loki protects the kid from the local bullies.
Well, perhaps in this fanfiction, Loki falls to earth right in the middle of a big city. He finds himself in the middle of a bustling crowd and decides to blend in. He might start exploring human culture more closely, like trying different foods at food trucks. As he does this, he accidentally gets involved with a group of people who are on the run from some bad guys. Loki then has to use his powers to protect them while also keeping his identity a secret.
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.
In a fanfiction, Foster could be a descendant of an ancient wizarding family with a connection to the Bifrost. Harry Potter, while on one of his adventures, stumbles upon Foster. Together, they embark on a journey to the Bifrost. Along the journey, they learn about the history of their respective families and how they are intertwined with the magic of the Bifrost. They also face challenges like dark wizards who want to control the power of the Bifrost for evil purposes.
Foster could be a Muggle - born who has an innate ability to sense the Bifrost. Harry Potter, being the famous wizard he is, helps Foster understand and control this new - found connection. They might use the Bifrost to travel to different magical realms and discover new spells or magical artifacts. For example, they could end up in a realm where magic is based on music and have to learn to adapt to use their magic there.
One possible fanfiction could involve Jane Foster using the Bifrost to accidentally end up in the Harry Potter universe. Maybe she arrives at Hogwarts and is mistaken for a new kind of magic user. The students and professors would be intrigued by her Asgardian technology and different kind of magic. She could potentially teach them about the Nine Realms while also learning about the wizarding world's magic.
Draco could inherit Loki's shape - shifting ability. He might be able to change into different forms like Loki does, which would give him an advantage in various situations. Also, Loki is known for his illusions, so Draco could have the power to create illusions as well.
In fanfiction, her character is distinct from Thor and Loki. Thor is associated with honor and strength in combat, Loki with his slyness and intelligence in manipulation. Their sister can be seen as a bridge between their two extremes. She may not be as physically strong as Thor but has her own form of power, perhaps in the realm of diplomacy or magic that is different from Loki's. For example, she could use her magic to create harmony rather than chaos like Loki. Also, her motivation might be different. Instead of Thor's quest for glory or Loki's desire for power, she could be driven by a need to protect her family and the realms in a more holistic way.