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.
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.
One possible scenario could be that Wally sacrifices himself to save the team from a powerful enemy. Maybe he uses his super speed to create a distraction and gets caught in an explosion. Another could be that he's affected by some sort of dark magic during a mission and it slowly drains his life force until he passes away. Or perhaps he takes on a time - related mission where he has to correct a major timeline disruption but the cost is his own life.
In some scenarios, Robin might be facing a powerful supervillain alone and gets severely injured. For example, he could be up against a foe with enhanced strength and speed, like Deathstroke. The villain could have a well - laid - out trap that Robin stumbles into during a solo mission.
In a fanfiction, Robin could sacrifice himself to save the world from a major threat. He discovers a way to stop an alien invasion but it requires him to give up his own life. He willingly does it, knowing the importance of his sacrifice. His death shakes the foundation of the Young Justice world and his friends have to learn to move forward without him.
In the fanfiction, perhaps Artemis decides to take on a more solo approach to her vigilantism. She may feel that with her mom gone, she can't rely on anyone else in the same way. This could lead to conflict within the Young Justice team as they try to bring her back into the fold. Also, she might start investigating the circumstances around her mom's death more closely, uncovering secrets that put her in danger.
One common plotline is the team's reaction to her death. They might go through stages of grief, with some members blaming themselves. Another could be a mystery surrounding her death, like whether it was really an accident or a planned assassination. For example, in some fanfictions, her death could be linked to a new villain who has a vendetta against the Young Justice team.
The team would be filled with guilt. They'd constantly think about what they could have done differently to save Robin. This guilt might lead to some members becoming more reckless in their attempts to make up for his loss.
They would be devastated. Some might go into a state of shock and denial at first. For instance, Robin might isolate himself to try and figure out if there was anything he could have done differently. Superboy could become extremely angry and start lashing out, blaming others or himself for not being able to protect Blue Beetle.
Well, one possibility is that it could be a heroic sacrifice. Blue Beetle might be facing an overwhelmingly powerful enemy that threatens the entire team or the world. He decides to use his powers to the fullest extent, knowing it will cost him his life, to save everyone else. For example, he could hold back a massive explosion or an alien invasion single - handedly.