In 'batman beyond return of the joker graphic novel', the most prominent characters are Terry McGinnis, who dons the Batman suit in this future - scape, and the Joker. Terry is a complex character, having to balance his normal life with his duties as Batman. He is constantly evolving and learning. The Joker is the archenemy. He is a character full of malevolence and unpredictability. His actions drive the story forward as Terry tries to stop him. Additionally, there are characters like Barbara Gordon who also play important roles in the story's development.
The two main characters are Terry McGinnis, the Batman of the future, and the Joker. Terry is a young man with his own set of skills and challenges. He has to uphold the legacy of Batman while dealing with the present - day threats in his city. The Joker, on the other hand, is the iconic villain, full of madness and chaos. His return shakes up the status quo in the Batman Beyond world. There are also other supporting characters like Bruce Wayne, who serves as a mentor to Terry and has his own history with the Joker.