Maybe Wally returns with new superpowers. He could surprise his old friends in Young Justice and they all go on a new mission together.
One possibility is that Wally returns as a changed person. He might have a darker side due to the things he endured while he was away. His return could cause a rift in the Young Justice team as some members are excited to have him back, while others are wary of the new Wally. As the story progresses, he could either overcome this internal struggle and fully rejoin the team, or he could be led astray by his new, more troubled self.
Well, in a 'Young Justice Wally Returns' fanfiction, perhaps he returns but has been in a different dimension. He has to adjust to the changes in the team and the world while also dealing with some new villains that are after him because of his experiences in the other dimension. It could be a story full of action, with Wally trying to reconnect with his friends like Artemis and the others, and at the same time, use his knowledge from the other place to fight the bad guys.
In a 'Young Justice Outsiders Wally Returns' fanfiction, he might return as a changed person. He could have lost his memories while away and slowly regain them as he interacts with his old friends. His return could also bring back old threats that were thought to be gone. For example, an enemy from his past might resurface, believing that Wally holds the key to something they want.
Well, it could be that Wally returns with new superpowers. Maybe he was in some sort of time - warp or alternate dimension and comes back stronger. He might have to prove himself to the team again that he's still the same Wally they knew.
Maybe a villain from the dimension where Wally has been. This villain could have followed Wally back to seek revenge or to take over the world that Wally has come back to. Since Wally has some knowledge about this villain, it would be his responsibility to stop the villain and protect his friends and the world. The villain might have powers that are a match for Wally's, making it a really tough fight.
One idea could be that when Wally returns, he has new superpowers. Maybe he gained the ability to manipulate time during his time away, which he has to learn to control. This could add a whole new dynamic to the team as they deal with the implications of such a powerful ability.
It could be a new villain who has a vendetta against speedsters. Since Wally is a speedster, this villain might see his return as an opportunity to prove himself. Maybe he's a scientist who has developed a weapon specifically designed to counter speedsters' abilities.
Wally could be developed by showing his growth in character. For example, if he was a bit cocky before, he could return more humble and with a deeper understanding of the world. This change could be a result of his experiences while he was away.
They could be in a parallel universe where the rules of their relationship are different. In this universe, they are more open about their feelings from the start. They go on a date to a beautiful place, like a beach at sunset. As the sun goes down and the sky is painted with warm colors, they share a tender kiss, realizing how much they mean to each other.
In a Young Justice fanfiction where Wally and Zatanna date, they might have some really cute and exciting adventures. They could use their respective powers to help each other out. For example, Wally's super - speed could be useful in getting Zatanna out of a tight spot quickly. And Zatanna's magic could be used to create some fun or romantic scenarios for them. Maybe they go on a date to a magical realm that Zatanna discovers, and Wally has to use his speed to keep up with all the strange and wonderful things there. It would be a great combination of their two different worlds coming together in the fanfiction.
One idea could be a time - travel plot where Fem Robin and Wally end up in a different era in the Young Justice universe. They have to work together to find a way back while also dealing with the challenges of that time period.
The theme of teamwork is crucial in these fanfictions. They have to work together as part of the Young Justice team. This includes trusting each other, communicating effectively, and using their respective skills for the common good. Another theme that pops up is the struggle against evil. Whether it's a supervillain or a more mysterious threat, they are often at the forefront of the battle, and their relationship is tested and strengthened in the process.