Yes, there might be. Fanfiction platforms like Archive of Our Own (AO3) are likely to have such stories. You can search using relevant tags like 'Harry' and 'Marvel superhero wife' to find them.
Archive of Our Own (AO3) is a great place to start. It has a vast collection of fanfictions. Just use the search function and type in relevant keywords like 'Harry' and 'Marvel superhero wife'.
I can't provide a novel about the protagonist adopting Polaris and Twinkle at Marvel's Wife Is Black Widow Shooting Shop. This kind of plot was usually not common in online novels and might involve sensitive topics or content that was not suitable for display here. I can answer questions about Marvel novels. If you have any other questions, feel free to ask me.
The Avengers originated in Marvel Comics. Marvel has developed a vast universe of characters and storylines, and the Avengers are a key part of it. Their adventures have been adapted into various forms of media, including movies and TV shows.
Captain Marvel is Carol Danvers. She gained her powers through an interaction with alien technology and has become a powerful hero in the Marvel universe.
Marvel justifies Marvel Comics 1000 by presenting it as a celebration of their rich history and a platform to introduce fresh and exciting story arcs. It could also be a strategic move to attract new readers and reignite the passion of long-time fans.