One popular trope is 'enemies to lovers'. Loki and Tony start off as adversaries, often at odds due to their different personalities and loyalties. But as the story progresses, they gradually fall in love. Another is 'soulmates'. In some fanfictions, they are fated to be together in some magical or cosmic way. 'Hurt/comfort' is also common, where one of them is injured or in distress and the other provides care and support.
One popular trope is the 'enemies - to - friends - to - lovers' arc. Given their complex personalities, they could start as rivals or even enemies, perhaps due to their different natures (Lucifer being a fallen angel and Loki being a Norse god of mischief), and gradually develop a deep connection. Another is the 'fish - out - of - water' trope, especially if they are placed in each other's realms. For example, Loki in Hell or Lucifer in Asgard.
The 'hurt/comfort' trope is also common. For example, Bucky might be dealing with his past traumas and Loki could be the one to offer comfort, or vice versa. Their complex personalities allow for a deep exploration of emotional healing within the relationship in the fanfic. Well, it's really interesting to see how the authors play with these two characters' emotions and pasts to create a compelling story. And sometimes, the 'fish out of water' trope is used. Loki, being a god from Asgard, is in a completely different world than Bucky. So when they interact, there are often humorous and heart - warming moments as Loki tries to adapt to new things, especially things related to Bucky's world.
One popular trope is the 'hurt/comfort' where either Loki or Mobius gets injured or is in emotional distress, and the other comes to their aid. For example, Loki might get hurt during a battle in a different timeline, and Mobius would be there to comfort and heal him. It shows their closeness and care for each other.
One popular theme is the exploration of their relationship dynamics during the pregnancy. It could be about how they support each other through the unexpected situation. Another theme might be the reactions of the other Avengers to this rather extraordinary event. Some fanfictions also focus on the challenges they face in terms of Loki's Asgardian nature and Tony's human - tech - influenced body during the pregnancy.
One popular theme is redemption. For example, Loki might be seeking redemption for his past misdeeds, and Tony and Bucky, who also have their own issues in the past, can relate to his journey in some ways. They help each other grow and move forward.
Another popular trope is the 'power couple' idea. In the fanfiction, Female Tony Stark and Thor combine their powers and intellect to become an unstoppable force. They take on the biggest threats in the universe together, and their relationship is not only about love but also about mutual respect for their abilities. This trope often shows them in epic battles, using their combined skills to save the day.
One common trope is the 'Mark' trope. For example, the reader and Loki might have a matching mark on their bodies that indicates they are soulmates. Another is the 'Forced Proximity' trope, where they are thrown together in a situation, like being locked in a room or on a quest together, which makes them realize their soulmate connection. And of course, the 'Love - at - First - Sight' trope also shows up sometimes, especially when their soulmate bond is so strong it overcomes any initial misunderstandings.
In 'Tony Stark x OC fanfiction', a popular trope is the 'fish - out - of - water' situation for the OC. When the OC enters Tony's world of high - society and advanced technology, there are a lot of comical and interesting situations. For instance, the OC might be overwhelmed by the grandeur of Stark Tower. Also, the 'redemption' trope can be seen, where the OC helps Tony deal with his inner demons, like his fear of losing those he loves, which was prominent after the events of 'Avengers: Infinity War'.
One popular trope is the 'enemies to lovers' trope. Given their different personalities and initial interactions in the MCU, it's interesting to see how they might overcome their differences and fall in love in fanfic. Another is the 'hurt/comfort' trope. Maybe Tony gets injured during a battle and Stephen has to use his magic to heal him, leading to a deeper connection.
One common theme is the clash of personalities. Tony is often seen as brash and scientific, while Loki is more mysterious and magical. Their interactions are filled with banter and trying to outwit each other.