Sure was. The movie Mask of the Phantasm took elements and storylines from the Batman comics to create its narrative. It stayed true to the comic's themes and characters to a large extent.
One interesting unmasked Batman fanfiction could be about his civilian life being more intertwined with his crime - fighting identity. For example, in some fanfictions, Bruce Wayne has to deal with the knowledge that some of his business associates suspect he is Batman, and he has to navigate those tricky social situations while still protecting Gotham at night.
Well, it could be about the hidden aspects of Batman's life in the 'Batman Beyond' setting once he's unmasked. For example, his relationships might change drastically. His family could be in danger more than ever. And it might also show his struggle to maintain his normal life while dealing with the new situation of being unmasked.
In some batman unmasked fanfiction, there are stories where Batman has to work with the Gotham police in a more open way after his identity is compromised. This leads to a whole new dynamic as he has to trust the police more than he's used to, while still maintaining his own methods of justice. It's really fascinating to see how the characters interact in this new situation.
One key feature is the recreation of the emotional impact of Bruce's parents' death. It sets the tone for his journey. Another is the exploration of Gotham in its early days in relation to Batman's origin. For example, you can see the seedy parts of the city that led him to take action.
The Scribblenauts Unmasked Batman origin story is an important part of the game's Batman - themed content. It starts with the tragic event of Bruce Wayne's parents being killed. This event shapes his entire life. He decides to use his resources to combat the criminal underworld of Gotham. In the game, you might get to see how he starts to build his gadgets, form alliances with characters like Alfred, and gradually become the symbol of justice that is Batman. You can also experience the early days of his vigilantism, as he begins to patrol the streets and take on the city's criminals.
In a fanfiction scenario where Batman is unmasked in the Justice League, one of the first things that could occur is a media frenzy. Reporters would be all over the story, trying to dig up more details about Batman's personal life. This could put a strain on Batman's relationships with his allies. Additionally, the villains in Gotham might see this as an opportunity to strike while Batman is distracted with dealing with the fallout of his unmasking.
Some fanfictions in 'Batman Beyond Unmasked' might focus on the alternate universes. Imagine a world where Terry never became Batman and how different Gotham would be. Also, the relationships between Terry and the other characters like Max could be a great concept. There could be stories about how their friendship evolves into something more or faces new challenges. And then there's the idea of the political and social climate in the 'Batman Beyond' world. Fanfiction could explore how Batman's actions impact the society at large.
Max is quite popular in 'Batman Beyond Unmasked' fanfiction. She is Terry's friend and often gets involved in his adventures. Her character provides an interesting contrast to Terry's more serious and secretive nature. Another popular character is probably Commissioner Barbara Gordon. She has a connection to the old Batman days and her role in the future Gotham is always an interesting topic in fanfiction.
Obviously, Batman himself is the central character. His complex personality and the situation of being unmasked provide a lot of material for fanfiction writers.