Another possibility is that Robin's powers are affected by a strange energy wave in the fanfiction. This causes his powers to malfunction at times and be super - charged at others. He has to figure out how to control these fluctuations while still being part of the Young Justice team and dealing with their missions.
A cool plot could involve Robin's powers being linked to an ancient artifact. In the fanfiction, he discovers this artifact and as he unlocks its secrets, his powers grow and change. Maybe he has to face off against an enemy who also wants the power of the artifact and the resulting battles and power struggles make for an exciting story.
One interesting storyline could be Robin exploring and mastering new powers that are unique to fanfiction interpretations. For example, he might develop the ability to communicate with animals in a way that's different from his usual skills. This could lead to him forming an animal - based team to help fight crime.
Another possible storyline is a time - travel story. Robin and Megan accidentally get sent back in time. They have to work together to find a way back to their own time while also trying not to disrupt the past too much. Along the way, they learn more about the origins of the Justice League and how their predecessors dealt with threats, which gives them new perspectives on their own roles as heroes.
One interesting storyline could be them teaming up to face a powerful new villain that neither of them can defeat alone. They combine Robin's strategic mind and Supergirl's super strength to outwit the enemy.
Artemis is also a frequent ally. She and Robin can form a great team, especially if Robin's powers are of a certain nature. For instance, if he has enhanced agility, he can work with Artemis' archery skills to create some amazing combat combinations. And of course, Superboy can be an ally. His super - strength combined with Robin's powers can make for a formidable force against their enemies.
A third interesting storyline might involve a secret alliance between a member of the Justice League and a villain that the Young Justice team discovers. This discovery then sets off a chain of events where the Young Justice team has to decide whether to trust the rest of the Justice League and how to handle this new information without causing a complete breakdown in the superhero community.
One interesting story could be about his training before becoming Robin. Maybe he was learning various combat techniques and detective skills from different mentors. For example, he might have been taught stealth by a shadowy figure in the fanfiction.
One popular storyline could be them teaming up against a powerful, previously unknown villain. They'd have to combine Superboy's strength and Robin's intellect to outwit the bad guy. Another might involve a personal conflict between them that they have to resolve while still facing external threats to the team. For example, a misunderstanding about leadership roles within the Young Justice group.
One possible storyline could be that fem Wally and Robin are paired up for a secret mission. They have to infiltrate an enemy base. Along the way, they start to realize their feelings for each other as they rely on each other's skills to survive.
One interesting Young Justice Robin fanfiction could be one where Robin has to face an unexpected villain from his past. Maybe a criminal he thought was locked away forever returns and he has to use his detective skills in a new way. Another could be a story about Robin's relationship with the other members of the Young Justice team, like how he bonds with Superboy over their different upbringings. There are also fanfictions that explore Robin's training with Batman in more detail, showing his growth as a hero.
One interesting storyline could be about a character developing claws as a new power and struggling to control it. For example, they might accidentally harm their friends during training sessions. Another could be a mystery where the origin of the claws is related to an ancient artifact in the Young Justice universe. And there could also be a story where a character with claws has to prove themselves to the team, facing discrimination from some members who fear their power.
One interesting storyline could be a young hero who discovers their powers while being part of the circus in the Young Justice universe. They might have to hide their abilities at first for fear of being different. Another could be a mystery involving the circus performers where they seem to be disappearing one by one, and the Young Justice team has to figure out what's going on. A third storyline could be about a circus act that is actually a front for a secret training ground for new superheroes.