One possible plot could be that a common enemy, like a powerful interdimensional villain, forces the Young Justice team and the Avengers to team up. They start off distrustful of each other, with the Avengers seeing the Young Justice members as inexperienced kids and the Young Justice team thinking the Avengers are too rigid. But as they face the villain's various attacks, they gradually learn to work together. For example, Superboy could team up with the Hulk in brute - force battles, while Robin and Iron Man use their intelligence to figure out the villain's weaknesses.
The plot could involve a powerful artifact that has the potential to destroy both the Young Justice universe and the Avengers' universe. The two teams meet while trying to secure the artifact. There are initial clashes due to different approaches. However, as they discover more about the artifact and the evil force behind it, they put aside their differences. Wonder Girl and Captain Marvel could fight side - side against the villain's female minions, and the archers like Green Arrow (from Young Justice) and Hawkeye could provide cover and long - range support.
One interesting plot could be that the Young Justice team gets accidentally transported to the Avengers' universe. They initially face misunderstandings as the Avengers are suspicious of these new, young heroes. But then they realize they have a common enemy. For example, a powerful villain is trying to take over both universes. So, they must combine their skills and resources to stop the villain. The Young Justice members' unique powers and the Avengers' experience would make for a great dynamic.
Well, the plot could involve Ben Tennyson and the Young Justice team teaming up to fight a common enemy like Darkseid. Ben could use his various alien forms to complement the powers of the Young Justice members. For example, Heatblast could help Superboy when dealing with cold - based threats.
Well, one possible plot could be that Supergirl is somehow transported to the Young Justice universe. Maybe there's a dimensional rift caused by some villain's experiment. She then teams up with the Young Justice team to stop this villain from causing more chaos across different dimensions. They could learn from each other's skills and powers along the way.
One possible plot could be that Subaru from 'Re:Zero' somehow gets transported to the world of 'Young Justice'. He might initially be confused but then use his 'Return by Death' ability to his advantage. For example, he could help the Young Justice team in battles by being able to predict enemy moves after dying a few times. His unique perspective on life and death could also influence the team's moral decisions.
A cool plot could be that a dimensional rift opens up and pulls some of the Young Justice characters into the Ben 10 universe. They then have to find a way to get back home. Along the way, they meet Ben and join forces with him. Ben shows them around his world, and they help him deal with some local threats. For instance, Aqualad could use his water - based powers in conjunction with Ben's Four Arms in a fight against a group of robotic enemies that are causing chaos in a city near Bellwood.
One idea could be that Spiderman gets transported to the Young Justice universe. He teams up with the team to stop a common enemy like Vandal Savage, who has some new high - tech weaponry. Spiderman's unique abilities like web - slinging and his spider - sense would add a new dynamic to the team's combat strategies.
One possible plot could be that Naruto is somehow transported to the Young Justice universe. He teams up with the Young Justice team. Naruto's unique jutsu skills like the Rasengan could be used to fight the villains in the Young Justice world. Maybe they face a common enemy that requires both Naruto's ninja abilities and the superpowers of the Young Justice members to defeat.
One idea could be that the Avengers end up in the Young Justice universe due to a malfunctioning portal. They team up with the Young Justice team to fight a common enemy, like a powerful alien threat that neither group could handle alone. The characters' different skills and personalities would create great interactions.
If Young Justice meets the Avengers in fanfiction, the cultural differences between the two groups could also be a factor. Young Justice is more of a teen - led group with its own set of values and goals. The Avengers are a more global - scale superhero team. Aqualad could share his knowledge of underwater threats with Namor if they ever interact. And there could be some misunderstandings at first, like when the Flash from Young Justice might accidentally run into Hawkeye's arrows during a fight against a common foe.
One interesting plot could be that a powerful ghostly villain from Danny's world somehow crosses over into the Young Justice universe. This villain starts causing chaos and Danny has to team up with the Young Justice heroes to stop it. Along the way, they learn about each other's powers and worlds.