Well, a typical theme in these fanfics is the transformation of the Avengers. When they babysit, they often have to change their usual ways. For example, Hulk might have to control his anger better around kids. Also, the idea of family or found family is common. The Avengers and the kids they babysit can form a kind of surrogate family unit in the story. And teamwork among the Avengers also comes up a lot, as they have to work together to take care of the kids properly.
The theme of protection is often present. Castiel, being an angel, has a natural inclination to protect. So in these fanfics, he not only babysits but also safeguards the children from various threats, whether they be physical or more supernatural in nature. For example, in some fics, he might protect the kids from demons while trying to make them eat their vegetables at the same time.
One common theme is family bonding. The act of babysitting together often brings the brother and sister closer, allowing them to understand each other better. For example, they might share a laugh over a cute thing a baby does, which breaks down any barriers between them.
One common theme is heroism. Fanfics often explore what it means to be a hero, like the Avengers, facing great challenges and making sacrifices. For example, a fanfic might show a new character learning from the Avengers about the true nature of heroism.
A prevalent theme is the exploration of the characters' dark sides. In a dysfunctional situation, the stress and conflict can bring out the worst in the Avengers. For instance, Thor might struggle with his anger more than usual, or Black Widow might have to face her past traumas in a more intense way. This exploration of the characters' inner demons adds depth to the fanfic.
One common theme is Clint's sharpshooting skills. Fanfics often showcase him using his archery abilities in amazing ways, like taking out multiple enemies in a single shot. Another theme is his loyalty to the Avengers. He's always there to have their backs.
One common theme is family. Since the Avengers are like a family themselves, Christmas is a time to strengthen those bonds. They might have heart - to - heart conversations during the holidays.
One common theme is teamwork. Since both the Avengers and the Incredibles are about groups of heroes, fanfics often explore how they work together. Another theme is power management. The different powers of the characters from both universes are often compared and contrasted.
Another theme is the idea of different cultures coming together. The Avengers represent a Western superhero concept, while BTS is a huge part of Korean pop culture. Fanfics explore how these two different cultures interact, like sharing music or fighting styles.
Another theme is power and responsibility. Since the Avengers are powerful heroes, fanfics often explore how they handle their powers. Some stories might show a character struggling with the consequences of using their powers too recklessly.
Overcoming gender stereotypes is also a theme. In fanfics, the female avengers break free from the traditional ideas of what a female superhero should be. They can be as physically strong as the male avengers, and just as smart in strategizing battles. They show that they are not just sidekicks but can be the main heroes in their own right. This is often explored in different storylines where they prove their worth to a doubting world or other characters.