The other young members like Robin (if there's a new one) or Batgirl could be affected in terms of their own development. They might start to wonder if they should also consider leaving at some point. And it could create a sense of instability within the group as they have to adjust to not having Tim around.
The villains in the fanfiction could also be impacted. They might see the Bat Family as being weaker without Tim Drake and become bolder in their actions. Or, they might target Tim on his own, thinking he's an easier target away from the Bat Family's support.
For the other members of the Bat - family, like Dick Grayson or Barbara Gordon, it could create a rift. They might be caught in the middle between Tim and Batman. They may also start to reevaluate their own positions in the Bat - family, wondering if they too should consider leaving or changing their roles.
The plot could shift focus completely. Maybe the fanfic was about Tim Drake's relationships in Gotham, but once he leaves, it could turn into a story about how Gotham changes without him. It might explore how the villains react to his absence or how the city copes without his vigilante presence.
It could be due to a personal betrayal. For example, if he discovers that another member of the Bat Family has been hiding something important from him that makes him feel he can't trust them anymore. This would make him want to leave and create his own identity away from the family. In fanfiction, this kind of emotional turmoil can drive the story forward.
It could make Batman more determined to find him. Batman would be worried about his safety and would start an intense search. He might also feel guilty, thinking that he could have done something to prevent Tim from running away.
Percy's leaving could also have an impact on the family's reputation in some fanfictions. People in the wizarding community might start to gossip, which could put additional pressure on the Weasley family. And some characters outside the family, like Harry, might feel a sense of loss as Percy was also part of his extended circle. He might try to mediate between Percy and the rest of the Weasley family if he gets the chance.
His relationship with the Bat - family would likely be more strained. Since he was raised by a dragon, he might have different values and ways of doing things. For example, he could be more impulsive like a dragon in combat rather than following Batman's strict rules. This would cause friction with Batman and the other Robins who are used to a more controlled approach.
Well, when Bruce Wayne gets injured in fanfiction, it shakes the Bat - family to its core. They all have different reactions. Some, like Jason Todd, might be angry at the situation and go on a bit of a solo rampage to find the culprit. The younger members of the family would look up to the more experienced ones for guidance. They would also have to re - organize their patrols and strategies. And the family would be more united in protecting Bruce while he recovers, but there would also be some arguments about the best way to do it.
It could lead to some major changes. Maybe the other heroes are initially skeptical or cautious around him because of his new form.
For Blake, it could be a huge relief. Adam was a source of great stress and fear for her. His leaving might give her a chance to fully break away from her past traumas related to him and the White Fang. She can focus more on her own growth and her relationships with Team RWBY.
Some fanfictions show the emotional side of having diabetes. Tim Drake might feel frustrated or self - conscious at times. There could be scenes where he has to decline a sugary treat offered by a friend, and he feels left out. But then his friends learn to be more understanding and inclusive.