In the 'nightwing origin graphic novel', Dick Grayson is the central figure as he is the one whose origin is being told. Batman is a major character as he has a huge influence on Dick's life, from training him as Robin to their complex relationship later. There are also appearances by other members of the Bat - family like Barbara Gordon (Batgirl) who has her own interactions with Dick. And of course, the villains he faces during his early days are also part of the story.
The main character without a doubt is Dick Grayson, soon to be Nightwing. He starts as Robin, a sidekick to Batman. Batman is crucial as he guides Dick in his early days of heroism. Alfred, the butler, is also present, providing support and wisdom. Then there are characters from Dick's past as an acrobat, his parents for example, whose death sets the whole story in motion. And we can't forget the villains like the Joker who may have indirect influence on Dick's journey to becoming Nightwing, as Batman's battles with such villains also shape Dick's experiences and decisions.
Barbara Gordon also plays a significant role in many of the stories. She's Batgirl, and she has a complex relationship with Nightwing. And then there's Alfred, who provides support to Nightwing just like he does for Batman.
Nightwing is the primary character without a doubt. In addition to him, we might see his long - time allies such as Oracle. There could also be villains from his rogues' gallery. And considering it's a 'new order' story, there may be some characters who represent the new power structure or the forces that are causing the change in the order, and they would interact with Nightwing in various ways throughout the graphic novel.
The main character is Nightwing. In addition to him, there may be characters that are important to his backstory, like his family members if they play a role in his origin or his development as a hero. Also, there could be other superheroes or anti - heroes that he teams up with or has run - ins with in the 'Earth One' universe. Villains are also likely to be main characters in the sense that they drive the plot through their actions against Nightwing.
Catwoman is obviously one of the main characters. Since it's about her origin, it focuses on her. Batman might also be a main character as their relationship is a significant part of Catwoman's story.
There could be a love interest as well. She could be someone who was there from the start, perhaps a fellow soldier or a scientist's assistant. Her presence could add an emotional depth to Deadpool's origin. Maybe she was the one who saw the good in him even when he was starting to change due to the experiments. This relationship could also be a source of conflict, like if she was in danger because of his new - found powers or if she had to choose between him and her own safety or the safety of others.
The main characters are Harley Quinn herself and the Joker. Harley's transformation from Dr. Harleen Quinzel is a big part of the story, and the Joker is the one who leads her down the villainous path.
The main character is Deadpool. Besides him, there may be his trainers or those in charge of the experiments on him. Also, there could be some early antagonists that he encounters during his origin story. These characters all contribute to shaping Deadpool's journey in the graphic novel.
Obviously, Jason Todd is the main character. But Batman is likely to be a major presence as well, since he has a big influence on Jason's story.
King Kong would surely be one of the main characters. There might also be some native inhabitants of Skull Island who play important roles.
Obviously, Venom is a main character. And as I mentioned before, Eddie Brock, who bonds with the symbiote to become Venom. There may also be other characters like the ones who are involved in the events that lead to the creation of Venom, such as the scientists or villains who play a part in the origin story.