A 'Guardians of the Galaxy meet Avengers' fanfiction might involve a lot of character interactions. Drax could be fascinated by the Hulk's strength and constantly challenge him to tests of might. Gamora and Black Widow could share their combat experiences and train together. Also, Groot and Thor might have an interesting exchange. Thor could be amused by Groot's simple yet endearing nature while Groot might be intrigued by Thor's lightning powers.
They could end up having a friendly competition. The Avengers with their superpowers on Earth and the Guardians with their space - faring skills. Iron Man might be intrigued by Rocket's weapon - making abilities and try to collaborate on some new tech. And Thor could find common ground with Drax in terms of their brute strength and warrior spirit.
Star - Lord is also very popular. His roguish charm and his connection to the cosmic side of the Marvel universe bring a unique flavor to the fanfiction. Writers love to explore his backstory more deeply and his potential relationships with other characters.
Another cool fanfiction idea could be a time - travel story. The Avengers accidentally send themselves to the time when the Guardians were just forming. This leads to a chaotic but interesting adventure where they have to work together without ruining the future of both groups.
One interesting fanfiction could be about a team - up mission between the Avengers and the Guardians. Maybe they have to face a new, powerful cosmic threat that neither group could handle alone. For example, a super - villain who can control dark matter and is using it to destroy planets on a whim.
Black Widow is another popular character. Her skills as a spy and fighter make her a great addition to any crossover fanfiction. She could be involved in a mission with the Guardians where she has to use her stealth and intelligence to outwit their enemies. Also, her complex backstory gives writers a lot to work with when creating new storylines.
One interesting fanfiction could be about the Guardians and Avengers teaming up to face a new, powerful villain from another dimension. In this story, the different personalities, like Star - Lord's charm and Captain America's leadership, would clash and then blend as they figure out how to defeat the enemy.
Hulk might not care much about the Guardians' antics at first. But if they accidentally made him angry, things could get really wild. Thor, on the other hand, would likely be more open - minded. He's already used to dealing with different realms and species, so the Guardians' oddities might seem normal to him compared to some of the things he's seen in Asgard.
I think Star - Lord and Iron Man would be an interesting pair. They both have a cocky and self - assured attitude. They could compete in terms of who has the cooler gadgets and who is better at coming up with quick - witted plans during battles. They might also argue about music, as Star - Lord is always into his retro tunes while Iron Man probably has his own favorite modern music.
A great plot could be that a member of the Avengers gets lost in space and is found by the Guardians. The Guardians then have to bring this Avenger back to Earth, but on the way, they encounter a series of challenges that require the combined skills of both groups. Along the way, they form strong bonds and exchange knowledge about their respective worlds.