Alfred is definitely a key character. He has been by Batman's side through it all, and when Batman retires, Alfred might be the one who helps him adjust to normal life. Another character could be one of Batman's villains, like the Joker. Even though Batman is retiring, the Joker might not be done with Gotham or with Batman, and could try to cause chaos to draw Batman back into the fray. And of course, any new heroes or anti - heroes that emerge in Gotham in Batman's absence could be main characters as well.
Commissioner Gordon would likely be a main character. He has been Batman's ally for a long time, and with Batman retiring, he'd have to face the challenges of keeping Gotham safe on his own. Also, Robin, if there is a current Robin in the story, could be a main character. He might be left with the big shoes to fill that Batman has left behind.
Catwoman could be a main character in 'batman retires fanfiction'. Given her complex relationship with Batman, she might be affected by his retirement. She could either try to fill the void he left in terms of protecting the city's more vulnerable elements or she could revert to her old ways and cause trouble. Additionally, Oracle, Barbara Gordon, could play a major role. She has her own network and resources, and with Batman gone, she might step up her efforts to keep Gotham's criminal underworld in check.
A smart and curious student could be a main character. This student might be the first to notice something strange going on and then team up with Batman. For example, a science - geek student who notices some abnormal chemical reactions in the school lab that might be related to the mystery Batman is investigating.
Well, in 'batman retires fanfiction', perhaps Batman realizes that the city has changed. The crime has become more political and less about the kind of street - level villains he used to fight. So he decides to retire and focus on using his Bruce Wayne identity to influence Gotham in a different way, like through philanthropy and reforming the city's infrastructure. He might also start mentoring young minds to fight crime in more legal and social ways.
The Penguin often makes an appearance. He can add an extra layer of chaos and villainy to the story. His devious plans can either get in the way of Batman and Catwoman's relationship or be a catalyst for them to work together more closely.
The Joker is an obvious choice. His relationship with Harley Quinn is complex and his chaotic nature can add a lot of drama to the fanfiction. Also, Poison Ivy could be included. She has a strong friendship with Harley, and her plant - based powers can create interesting scenarios when combined with Batman's detective skills.
Oracle is a great character to include. She can provide the technological support and intel that both Red Hood and Batman need. Her relationship with Batman also adds an interesting dynamic.
Well, obviously the two main characters are Batman from the normal DC universe and Flashpoint Batman. Batman is the well - known Dark Knight, a symbol of justice in Gotham. Flashpoint Batman is from an alternate timeline, with different experiences and a potentially different personality.
Harley Quinn could be a great addition. She has a complex relationship with both Poison Ivy and Batman. Her chaotic nature could add a lot of twists to the story. Another character could be Alfred. His wisdom and loyalty to Batman could provide interesting interactions when dealing with Ivy.
Another character could be Terry's love interest. She could play a role in the twins' story, perhaps she has a connection to their past or she gets caught in the middle of their conflict with Batman Beyond, making the story more complex and engaging.
Well, obviously Batman is one of the main characters. His presence is central as he is the father figure. Then there are his sons. Each son has his own personality and abilities that contribute to the story. For example, Damian Wayne is often a prominent character, with his assassin - trained skills and complex relationship with Batman.
Definitely Batman, whose death is the focus. Then there's Nightwing, who has a long history with Batman and would have a big part to play in the story after Batman's passing. Alfred, as Batman's loyal butler and friend, would be prominent. And don't forget Catwoman. She has a complex relationship with Batman, and in a story about his death, she could be a main character, either mourning his loss or trying to take advantage of the power vacuum in Gotham.