One interesting plot could be Bruce Wayne Jr. struggling to live up to his father's legacy. He might face villains who specifically target him because of his relation to Batman. Another could be his journey in discovering his own unique identity within the shadow of his famous father.
Well, perhaps a plot where Bruce Wayne Jr. has to take over as Batman unexpectedly. He's not fully trained yet, but he has to protect Gotham. This would involve him making mistakes and learning from them. Or, a plot where he teams up with some of the younger sidekicks of his father's allies to form a new generation of heroes in Gotham.
Often, it can be a complex relationship. His father might be overprotective, given his own dangerous life. Bruce Wayne Jr. could feel suffocated by this but also understand it comes from love.
One possible plot could be that Joker, in his twisted way, tries to make Bruce Wayne see the 'fun' in chaos. He might set up elaborate pranks around Gotham that target Wayne Enterprises, forcing Bruce to confront him not as Batman but as Bruce. Another plot could involve Joker finding out Bruce's identity in a unique way and using that knowledge to toy with him psychologically, perhaps by threatening the people Bruce cares about in his civilian life.
One reason could be that Bruce Wayne never had the traumatic event that led him to become Batman in the original story. Maybe his parents' death was prevented somehow, so he never felt the need for vengeance and justice in that extreme way.
One possibility is that Thomas Wayne Batman comes from an alternate timeline. He meets Bruce Wayne in the current timeline and shows him a different way of approaching crime - fighting. Maybe he has more brutal methods, which causes Bruce to question his own more restrained approach. They could then learn from each other and create a new, more effective Batman strategy for Bruce's Gotham.
Bruce Wayne in Batman Begins fanfiction is often a complex character. He is a man on a journey of self - discovery and vengeance. In fanfiction, we might see different aspects of his training that were not fully explored in the movie. For example, his time with Ra's al Ghul could be delved into more deeply, showing his internal struggle between the teachings of the League of Shadows and his own moral code.
One interesting Bruce Wayne fanfiction could be about his early days of training before becoming Batman. It might explore how he mastered different fighting styles and detective skills. Another could be a story where Bruce Wayne has to face a new, unknown villain in Gotham while also dealing with his personal life and the secrets he has to keep. There are also fanfictions that focus on alternate universes, like one where Bruce Wayne is a detective in a world without superpowers.
The dynamic could be complex. Thomas might be both proud and worried seeing Bruce as Batman. Proud that his son is carrying on the legacy, but worried about the dangers. He could be overprotective at first.
In some fanfictions, Harry could be Bruce Wayne's son. Fanfiction allows for a lot of creative liberties, so it's possible for authors to create such a relationship. However, it's not part of the official DC Comics canon.
Well, in such a fanfic, it might show Bruce Wayne as a completely different entity from Batman. Maybe Bruce is just a normal rich guy who has no idea about the vigilante activities of Batman. He could be living his own life, focused on business and social events, while Batman is someone else entirely, perhaps an unknown figure with no connection to the Wayne family.
In a love story, Bruce Wayne might fall for a kind - hearted social worker. She helps the underprivileged in Gotham and her compassion draws him in. But his secret life means he has to lie to her often, and when she eventually finds out, they have to work through the trust issues.