The 'what - if' trope often shows up. Such as what if the Avengers watched an alternate version of Thor's story? This can lead to all kinds of interesting plot twists. They might see Thor as a villain in this version, or they could witness a completely different set of events that make them question their own reality.
One popular trope is the 'revelation' trope. For example, the Avengers might watch Thor's past battles and learn something new about him that changes their perception. It could be a hidden strength or a past sacrifice.
The 'fish - out - of - water' trope is also seen a lot. When Percy ends up in Thor's world or vice versa, they are both out of their element. Percy has to deal with the strange Norse landscapes and customs, while Thor might struggle with the modern - day world if he goes to Percy's. It creates a lot of comical and interesting situations in the fanfiction.
Another popular trope is the 'romantic subplot'. Many fanfictions pair Skye with various Avengers. For instance, some pair her with Clint Barton. The stories often explore how their relationship develops over time, starting from initial attraction to deeper emotional bonds. This trope adds an extra layer of drama and emotion to the overall story.
A common trope is the 'power imbalance' which gets resolved over time. Since Thor is a powerful god and Harry is a powerful wizard, initially there might be a struggle for dominance or understanding. And then there's the 'shared destiny' trope. Maybe they are fated to save both the Asgardian and wizarding worlds together. This makes for an interesting dynamic in the fanfiction.
One popular trope is the 'Opposites Attract' in fem Tony Stark and Thor fanfiction. Their different personalities, with Tony being a tech - savvy human and Thor a powerful Asgardian god, make for an interesting dynamic.
In Star Wars Avengers fanfiction, the 'hidden - heritage' trope can be seen often. Maybe a character discovers they have a connection to the other universe in their family history. The 'redemption' trope is also popular. A villain from one universe might find redemption by helping the heroes of the other universe. And let's not forget the 'love - across - universes' trope, where characters from Star Wars and Avengers fall in love despite their different origins.
One popular trope is the 'fish - out - of - water' story. Merlin, coming from a medieval world, is suddenly in the modern world of the Avengers. It's funny to see his reactions to things like technology. Another is the 'power - sharing' trope. Merlin's magic and the Avengers' powers combine in unique ways to defeat enemies.
One popular trope is the 'team - up against a greater threat'. This usually involves the Fantastic Four and the Avengers coming together to fight a super - powerful villain that neither group could handle alone. For example, a cosmic entity that threatens the entire Earth.
One popular trope is 'Friends to Lovers'. Given their long - standing friendship, many fanfictions explore the idea of Steve and Bucky's relationship evolving into something more romantic. Another is 'Redemption Arc' for Bucky, as he tries to make up for his past misdeeds with Steve by his side. It makes for a very emotional and engaging read.
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 popular trope is the 'alternate universe' where the Avengers' story unfolds in a completely different setting or with different character dynamics. Another is the 'character redemption' arc, like when a villain - like character tries to become good. And of course, there's the 'team - up against an overpowering foe' trope which is classic in Avengers fanfics.