In many Young Justice fanfictions where Batman dies, it often leads to a major shift in the dynamics of the team. The younger heroes would be forced to grow up even faster. For example, Robin might take on a more serious and leadership - like role. He would have to deal with not only his own grief but also the responsibility of guiding the team in Batman's absence. It could also lead to some heroes doubting their abilities without Batman's strategic mind behind them.
In many Justice League fanfictions where Batman dies, it could lead to a complete shift in the team dynamics. For example, the League might become more reckless without Batman's strategic mind. Superman could struggle with the loss, perhaps blaming himself for not being able to protect Batman. The other members like Wonder Woman would have to step up in terms of leadership and planning. It could also open the door for new characters to emerge in the fanfiction's storyline, trying to fill the void left by Batman.
The Flash might initially be in denial. He's used to Batman always having a plan and his death would be a huge shock. He would then turn his speed into a tool for investigation, trying to find out exactly what happened. Green Lantern could feel a sense of loss but also be spurred into action, using his ring to try and prevent future tragedies like Batman's death. He might create constructs in Batman's memory to inspire the team.
Perhaps a member of the Justice League, accidentally. For instance, during a fight where powers go out of control. Let's say Flash runs too fast and accidentally knocks Batman into a sharp object, causing a fatal injury. This would create a huge moral dilemma within the League.
Well, 'Young Justice: Batman's Legacy' is a must - read. It looks at how Batman's legacy impacts the new generation of heroes in the Young Justice series. It shows how his methods and values are being passed down. Additionally, 'Batman and the Young Justice Rebels' is a fun read. It's about a group within Young Justice who start to question Batman's leadership and the resulting conflict and how they all learn from it in the end.
The Justice League's reaction in fanfiction when Batman dies can vary greatly. Superman might become more withdrawn, feeling like he failed as a friend and protector. Wonder Woman could be the one to try and hold the team together, using her strength and wisdom. The Flash might struggle with guilt, thinking he could have been faster to save Batman. Each member would have their own internal conflict and way of dealing with the loss, which could lead to some interesting character development in the fanfiction.
In some fanfictions, Batman might sacrifice himself to save the Justice League from an all - powerful enemy. For example, facing a threat that can only be stopped by using a dangerous self - destruct device that Batman activates while the others escape.
Well, there are some fanfictions that blend the two universes in a really cool way. For example, there might be a story where the Young Justice characters have to team up with Terry to stop a villain who is using a combination of old - school and future - tech. As for finding these fanfictions, you can start by looking on popular fanfiction websites like Archive of Our Own or FanFiction.net. Just search for 'Young Justice Batman Beyond' and you'll get a bunch of results.
One possibility could be a story where Batman's daughter joins the Young Justice team. She might struggle at first to be seen as her own person rather than just 'Batman's daughter'. She could have unique abilities, perhaps a combination of Batman's detective skills and some meta - human power she inherited from her mother. This would add an interesting dynamic to the Young Justice group as they try to accept her and she tries to prove herself.
Another scenario could be that Robin is caught in a trap set by a super - villain. The trap could be a time - bomb - like situation where he has to choose between saving himself or a large number of civilians. He chooses the latter and gets killed in the process, leaving his friends in the Young Justice team to avenge his death.