One common theme is the clash of different power systems. Nico has his demigod powers and the Avengers have their own super - abilities. Another theme is about finding one's place in a new group. Nico is an outsider coming into the Avengers' world.
Well, in many 'Avengers Nico di Angelo fanfic', the theme of adaptation is quite common. Nico has to adapt to the Avengers' way of life, their technology, and their code of ethics. There's also the theme of mystery as Nico's powers and his past as a demigod are often a source of mystery for the Avengers. And of course, the theme of heroism, as they all come together to save the world in different ways, with Nico bringing his own brand of heroism from his demigod background.
A major theme is often the exploration of friendship and trust. Since Nico is new to the Avengers, he has to build relationships with them. Also, there's the theme of facing new and greater threats together. His powers combined with the Avengers' can be used to combat stronger enemies. And sometimes, there's the theme of identity as Nico tries to maintain his own identity while being part of this new superhero group.
Nico would fit in by bringing his unique powers. His ability to control the dead could be a huge asset in battles. For example, he could raise an army of skeletons to fight alongside the Avengers. His shadow - traveling would also be great for quick getaways or surprise attacks.
Some fanfics focus on the theme of acceptance. Nico has often faced isolation and misunderstanding in the original stories. A female character in the fanfic might be the one to offer him acceptance and a sense of belonging. This could be in the context of the Camp Half - Blood or other settings within the Percy Jackson world. There could also be themes related to family, where the female character becomes like family to Nico or helps him with his family issues.
Well, the plot could involve Nico using his powers from the Percy Jackson universe to help the Avengers in a battle. Maybe he could use his shadow - traveling ability to surprise enemies or transport the Avengers quickly. It would be really cool to see how he'd interact with the different personalities in the Avengers team, like Tony Stark's sarcasm or Captain America's leadership.
One common theme could be the other characters showing care and concern for Nico. For example, his friends from Camp Half - Blood might rally around him.
One great 'Avengers Nico di Angelo fanfic' is 'The Demigod Among Heroes'. It has an interesting plot where Nico's powers blend in a unique way with the Avengers' world. Another one could be 'Nico and the Avengers: A New Alliance'. It shows how Nico's dark and mysterious nature creates some really cool interactions with the Avengers.
Well, it could be about Nico Di Angelo using his underworld powers to help the Avengers in a battle against a powerful villain who has the ability to raise the dead. Maybe he teams up with Doctor Strange to close portals to the underworld that the villain is using to summon hordes of zombies.
Another theme is the power of love to change. In many fanfics, Nico's love interest has a profound impact on him, changing his outlook on life and his relationships with others. It could be that he becomes more open and less brooding because of the love he experiences.
A common theme is the struggle with their identities. Both Nico and Will have complex backgrounds in the Percy Jackson universe. Their kiss often represents a moment of acceptance of themselves and their relationship. For example, Nico has had to deal with his dark powers and being an outcast in some ways, and Will is a healer. Their union can symbolize the coming together of different aspects of the demigod world.
In Nico di Angelo x Will Solace fanfiction, a frequent theme is the struggle against prejudice. Because Nico has a connection to the Underworld, some in the camp are wary of him, and Will often stands by his side, fighting that prejudice. Another common theme is the exploration of the supernatural side of their relationship. Given their demigod status, their relationship might have an impact on the magical or mythological aspects of their world. And the theme of trust is also very important. They need to build trust in each other, and many fanfictions revolve around how they overcome obstacles to trust one another.
One common theme is friendship. An OC might befriend Nico and help him break out of his shell. Since Nico has had a rather lonely and difficult past, having an OC come in and offer genuine friendship can be a great plot point.