Terry McGinnis is definitely a popular character. He is the new Batman after all. His character often has a lot of development in the fanfiction as he tries to fill Bruce Wayne's shoes.
One interesting concept could be the evolution of Gotham in the 'batman beyond' universe as depicted in the fanfiction. Maybe new villains or anti - heroes emerge that are unique to this take on the story.
Sure was. Batman Beyond was indeed a comic that explored the adventures of a new Batman in a dystopian future. It had unique storylines and art styles that attracted many fans.
In terms of Batman's growth, in the harem fanfiction, his personal relationships force him to reevaluate his loner - hero approach. He starts to rely on the members of his harem for emotional support and different kinds of help. This is a big change from the original where he was more self - reliant and solitary in his crime - fighting journey.
Robin, in all his incarnations, is also a popular character in fanfiction related to Batman. He represents the sidekick aspect and the growth and development that comes with it. In Batman Beyond, Commissioner Barbara Gordon also features prominently in some fanfictions. Her connection to the original Batman era and her role in the new one can be explored in interesting ways.
One interesting concept could be exploring alternate universes where Batman has different powers or allies. For example, a fanfiction might imagine a world where Batman has the ability to control shadows like a metahuman. Another concept could be delving deeper into the relationship between the original Batman and the new Batman in Batman Beyond. It could show how the legacy and lessons are passed down, and how the new Batman copes with the huge shoes he has to fill.
A really cool 'Batman Beyond' fanfiction is 'Future of Gotham'. This one takes a look at the future of Gotham City itself, with Terry as Batman facing threats that could change the city forever. It has a unique take on the technology in the 'Batman Beyond' universe.