One interesting plot could be that a powerful alien race is interested in Iron Man's arc reactor technology. They target Earth, specifically the Young Justice team, thinking they can lead them to Iron Man. The Young Justice team initially resents Iron Man for bringing this trouble but then realizes they need his help. Iron Man, on the other hand, has to learn to trust the young heroes. As they fight the alien invaders, they also learn from each other. Iron Man teaches them about advanced weaponry and they teach him about the power of unity. There could be sub - plots about the team members' individual growth, like Superboy learning more about his own powers in relation to Iron Man's technology.
A good crossover might involve Iron Man being accidentally transported to the Young Justice universe. He then has to figure out how to get back while also helping the team with their current mission. Maybe he shares his knowledge of engineering and combat strategies with them. Or perhaps there's a fanfic where a Young Justice character like Superboy is intrigued by Iron Man's suit and tries to build his own version, leading to some humorous and action - filled situations.
Iron Man could be introduced as a mentor figure. His advanced technology and strategic mind would be valuable assets to the young heroes in Young Justice. He could help them upgrade their gear and offer different perspectives on combat and problem - solving.
One idea could be that Iron Man, through some interdimensional mishap, ends up in the Young Justice universe. He could then team up with the young heroes to face a common enemy, like an alien invasion that threatens both Earth and the other planets in the DC universe. His advanced technology would be a great asset to the team, and the Young Justice members could teach him about the unique aspects of their world.
Iron Man's cocky and self - assured personality could either clash or complement the Justice League members. His confidence might annoy some like Superman who is more humble, but it could also inspire others like Flash. Batman might respect his technological prowess but be wary of his impulsive side.
One idea could be that Iron Man's technology gets mixed up with Justice League's alien tech. Maybe he creates a new suit using some of the Kryptonian crystal technology he discovers while working with Superman. This new suit gives him powers similar to Superman for a short time, but it also has some unexpected glitches that lead to humorous or dangerous situations.
Iron Man's presence would likely disrupt the team dynamics at first. He's used to being in charge and having his own way of doing things. The Young Justice team has its own leaders and a more collaborative style. So there might be some clashes as they try to figure out how to work together. But eventually, his experience and tech - savvy could bring the team to a new level of effectiveness.
Definitely Robin and Iron Man. Robin is known for his intelligence and detective skills, and Iron Man is a technological genius. They could bounce ideas off each other and come up with some amazing plans. Plus, they both have a bit of a cocky side at times.
In fanfiction, Iron Man could be a sort of wildcard addition to the Justice League. He might not always follow the traditional superhero code that the others abide by. For instance, he could use more extreme measures to stop villains, which could lead to debates within the team. But his wealth and resources would be a great asset. He could fund new projects for the Justice League, like building a new satellite headquarters with state - of - the - art technology. He could also share his Iron Man suits with other members in emergency situations, though they might need some time to get used to the high - tech controls.
One interesting crossover could be Iron Man's technology being integrated into the Justice League's arsenal. For example, his repulsor technology could be used by Superman to enhance his heat vision or flight capabilities. Another idea is Tony Stark working with Batman to develop new gadgets for the League. They could create a super - advanced Batmobile or a new type of Kryptonite - resistant suit for Superman.