Another theme is 'legacy'. It looks at how Thomas Wayne's actions as Batman would affect the future of Gotham and the Wayne family name. His actions could set a different precedent for the Bat - mantle compared to Bruce. Also, it might change how future generations view the Wayne family's role in Gotham.
The theme of 'moral flexibility' also appears. Thomas Wayne, being older and having a different life experience, may have a different moral code as Batman. Some fanfictions show him making more morally gray decisions in his fight against crime, which is different from Bruce's more strict moral boundaries.
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.
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.
One common theme is the struggle with identity. Richard has to come to terms with being the son of Batman. Another theme could be the protection of Gotham. He might face threats that his father once faced.
Grief is a very common theme. All the characters who were close to Damian, like Batman, Robin (if there's a new one), and the rest of the Bat - family, have to deal with the intense pain of losing him. Another theme is revenge. Batman might be driven to seek revenge against those he believes are responsible for Damian's death.
One possible scenario could be a time - travel or alternate universe situation. Thomas Wayne might be shocked to see Damian, his grandson, considering his own early death in the normal Batman timeline. He could initially be skeptical or even a bit hostile, thinking Damian is some sort of threat. But as they start to communicate, Damian could show his skills and determination, and Thomas might start to see the family resemblance not just in looks but in spirit.
Their relationship could develop through a series of adventures. For example, they might have to stop a powerful villain together. In the process, Damian's impulsive nature could clash with Thomas' more methodical approach. However, over time, they realize that they can complement each other. Thomas could help Damian think more strategically, while Damian could inspire Thomas to be more bold and take risks in their fight against evil.
One common theme is the clash of different ideologies. Batman is more about the gritty, street - level justice, while Wonder Woman brings in her Amazonian values. Damian Wayne often has to navigate between these two as he grows. For example, in some fanfictions, he has to decide whether to follow Batman's strict no - killing rule or be influenced by Wonder Woman's more lenient view on dealing with enemies in certain situations.
One great piece of Thomas Wayne Batman fanfiction is 'The World That Could Have Been'. It explores an alternate universe where Thomas Wayne becomes Batman instead of Bruce. The story delves deep into how his approach to crime - fighting might be different, considering his more mature and established position in Gotham society compared to Bruce when he started. It also shows how his relationships with the other characters, like Alfred and Commissioner Gordon, would be unique.
One possible plot could be that Thomas Wayne somehow time - travels to the present where Bruce Wayne is Batman. Thomas could initially be shocked at how Bruce has turned out, but then come to understand his motives. He might offer some old - fashioned wisdom that helps Bruce in his fight against crime.
One interesting scenario could be Thomas Wayne seeing Damian's combat skills and being both proud and a bit shocked. After all, Thomas may not have expected such a young and fierce fighter in the family. Another could be them having a deep conversation about family values, with Damian learning from Thomas about the Wayne legacy from its very origin.