Another theme is friendship or more. Sometimes they start as rivals but end up as friends or even something more romantic. They learn to rely on each other's strengths, like Thor's physical power and Tony's intelligence.
One common theme is friendship. Given that they are both part of the Avengers, many fanfictions explore how their different personalities can form a strong bond. Another theme is power. They both possess great power, and fanfictions often play with how they use or misuse their powers in different situations.
One common theme could be jealousy. Maybe the writer depicts Thor being jealous of Tony's technological prowess or Steve's leadership status, leading to a bashing scenario. Another theme might be a clash of ideologies. For example, Thor's Asgardian values versus Tony's more modern, human - centered and sometimes self - centered tech - based values and Steve's old - fashioned sense of justice.
Love and redemption are also common themes. The OC might be a character with a troubled past, and Thor helps them find redemption. At the same time, they fall in love. It's a classic trope that gives an emotional depth to the relationship between the two characters. This can be seen in many 'Thor x OC fanfiction' where the OC has to overcome some personal demons with Thor's support.
Teamwork is also a prevalent theme. Given their individual strengths, in fanfictions, they often have to work together to overcome obstacles. Thor's physical strength and Peter's quick thinking make for a great combination when they team up.
Friendship and camaraderie is also a big theme. Despite their differences, they come together to fight for a common good. In many fanfictions, they start off not liking each other much but as they face challenges side by side, they develop a deep bond. It's like a story of two opposites learning to get along and respect each other.
The theme of power and responsibility also pops up. With Thor being the more responsible and power - holding one, and Loki being the more mischievous and power - hungry at times, fanfictions play around with how they balance these aspects in their relationship. For instance, there are stories where Loki has to learn to handle power from Thor in order to protect Asgard.
The theme of mutual respect is also prevalent. Bruce respects Thor's power and Thor respects Bruce's intelligence. In many fanfictions, this mutual respect is what allows them to work together effectively. For instance, in 'Respect and Alliance' fanfiction, their respect for each other is the key to saving the universe from a great threat.
The theme of redemption also appears often. Loki, in particular, is a character who often has a journey of redemption in these stories. The reader can play a part in his journey, either by believing in him or by helping him see the error of his ways. And Thor may also have to come to terms with Loki's changing nature as the relationship with the reader progresses.
One common theme is the meeting of two very different cultures. Thor from Asgard and Thranduil from Mirkwood have distinct ways of life. Fanfictions often explore how they navigate these differences when they interact. For example, how they deal with each other's concepts of honor and leadership.
Love triangles are also quite common. The OC is usually caught in the middle between Thor and Loki, creating a complex web of emotions and relationships. This adds a lot of drama and tension to the story, as the OC has to navigate her feelings for both characters. It can lead to some really interesting character development and plot twists.