A frequent theme is the mystery surrounding his death. Some fanfics will focus on trying to figure out who or what was really responsible. Was it a long - time nemesis who finally got the upper hand? Or was it some new, unexpected threat? Also, the theme of hope in the face of despair can be present. Even though Batman is dead, his friends and the people of Gotham might find ways to keep hope alive and continue the fight against evil.
One common theme could be the impact on Gotham City. When Batman dies in fanfiction, it often shows how the city descends into chaos without its Dark Knight protector. Another theme might be the reaction of his allies like Robin or Alfred. They could be filled with grief and a sense of purpose to carry on his legacy. Also, some fanfictions may explore the idea of a new vigilante rising in the wake of Batman's death, perhaps inspired by his example and trying to fill the void he left behind.
In fanfiction about Batman when Robin dies, a recurring theme is the relationship between Batman and the villains. The death of Robin might change the dynamic. Villains could either target Batman more fiercely, seeing him as weakened, or be more cautious as they fear his wrath. There can also be a theme of rebirth, where Batman has to reinvent himself in the face of this great loss.
Grief is a very common theme. Since Catra dies, the other characters often have to deal with the pain and loss. They might go through stages of denial, anger, etc.
A common theme is grief. When Armin dies, the other characters have to deal with the intense pain of losing him. Another theme is the idea of sacrifice. His death might be seen as a sacrifice for a greater good.
Reflection is also a common theme. The characters may reflect on their time with Bones, their unsaid words, and the things they could have done differently. This often leads to character growth in the fanfic. Also, the theme of acceptance is there. The characters gradually accept Bones' death and move forward in their lives, though the memory of Bones always remains with them.
Love still remains a strong theme, but it might be a more complex and often tortured form of love compared to the original story. Another theme is survival. In 'Twilight Dies', characters are faced with new challenges and they have to fight to survive in a changed world.
One common theme is the exploration of their relationship in different universes. For example, in some fanfics, they might be in a world where Gotham is more peaceful, and they can focus more on their personal relationship without the constant threat of villains.
One common theme is the mentorship relationship. Batman was Nightwing's mentor, so many fanfics explore how that relationship developed over time and how it affects their current interactions.
One common theme could be sacrifice. Hinata might die to save Naruto or the village. Another theme could be grief, as Naruto and their friends would have to deal with her loss. And there might be a theme of revenge, where Naruto or others seek to avenge her death.
One common theme is the impact on Oliver. Since Felicity was an important part of his life, her death often leads to his struggle with grief and a re - evaluation of his purpose.