One possible plot could be that Naruto is somehow transported to the Young Justice universe. He could team up with the young heroes. For example, Naruto's skills in combat and his ability to use chakra could be a great asset in their battles against super - villains. His positive attitude and never - give - up spirit might also inspire the Young Justice members.
In such a fanfiction, there might be a big threat that requires both teams to combine their skills. The Flash could race with Kid Flash and share some speed - related tips. And Wonder Woman could train the female members of Young Justice in combat.
In this type of fanfiction, magic could play a role in character development. For Naruto, experiencing a different type of power system like magic in the Young Justice world could make him question his own ninja way. He might start to adapt some of the magic concepts into his own fighting style. And for the Young Justice characters, learning about Naruto's 'magic' (chakra) could open their eyes to new ways of thinking about power and how to use it more effectively.
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.
Well, the plot could involve Loki causing chaos in the Young Justice universe. Maybe he tries to manipulate the young heroes for his own gain, like getting access to some powerful artifact they are protecting. He could also form unexpected alliances with some of the anti - hero characters in the Young Justice world.
One possibility in a 'Young Justice meets Starfire' fanfiction is that Starfire gets involved in one of Young Justice's internal conflicts. For instance, if there are differences in opinion within the team about how to handle a certain situation, Starfire could bring a fresh perspective. Her unique upbringing on Tamaran and her experience with different cultures in space might help the team resolve their issues. Also, there could be a lot of character - development moments. The Young Justice characters could grow by learning from Starfire's positive attitude and her ability to see the good in people, even in the face of great evil.
The plot might center around a mystery that ties to both Young Justice's world and Batgirl's. For instance, some sort of ancient artifact that has the power to disrupt both the meta - human world and Gotham's criminal underworld. Young Justice brings their diverse powers and abilities, while Batgirl offers her detective skills and knowledge of Gotham. As they search for the artifact, they face various challenges and enemies.
Naruto would be a bit of a wild card at first. His brash and head - strong nature might clash with some of the more reserved members of the Young Justice team, like Aqualad. But his determination and loyalty would also be something that the team could quickly come to respect. He would probably befriend Superboy quickly as they both have a bit of an outsider feel.
Probably Naruto and Robin. Robin is the leader - type in Young Justice, always thinking and strategizing. When Naruto shows up, Robin would be the one to approach him first, trying to figure out who he is and what his intentions are. Naruto, being friendly and curious, would be open to the interaction.