Another important character is Adrian Veidt. He is a complex character with his own motives and plans. His interactions with Doctor Manhattan play a significant role in the overall plot of the graphic novel.
Since it's about the Manhattan Project, the main characters are likely to be the leading scientists. There would be Oppenheimer, who led the project. Enrico Fermi might also be one, as he made significant contributions to the development of nuclear reactors which were related to the overall Manhattan Project. There could also be military personnel involved in the project's management and security, like Leslie Groves. The graphic novel might also introduce some fictional characters to help tell the story from different perspectives, perhaps a young scientist's assistant who witnesses all the events and provides an outsider - insider view.
The main characters could be the scientists involved in the Manhattan Project. For example, Enrico Fermi might be one. Also, military personnel who oversaw certain aspects of the project could be main characters. There might also be some fictional characters added to the story to make it more engaging, perhaps a young scientist's assistant or a journalist trying to uncover the secrets of the project.
The most important character is Dr Manhattan himself. He is a super - being with extraordinary powers. Then there's Laurie Juspeczyk, who has a relationship with Dr Manhattan. There's also The Comedian, who is a complex and morally ambiguous character.
One of the things that makes it unique is its complex character. Doctor Manhattan has a very different view of time and existence compared to normal humans. His abilities, like seeing all of time simultaneously, are quite extraordinary and not often seen in other graphic novels.
I'm not familiar with the exact main characters in this novel. But in a story about Manhattan Beach, there could be characters like a surfer who is in love with the ocean and the beach lifestyle. There may also be a family that has lived in the area for a long time and is facing some sort of crisis. And perhaps a character who is new to the beach and has a different perspective that shakes up the status quo in the community.
Without having read the 'Manhattan Beach Novel' specifically, we can make some educated guesses. There could be a character who is an artist, drawn to the beauty of Manhattan Beach for inspiration. Another might be a single parent trying to raise a family in the somewhat idyllic yet challenging environment of the beach area. And perhaps there is an older, wiser character, like a retired sailor who has seen the changes in Manhattan Beach over the years and imparts his wisdom to the younger characters. These are just some of the possible types of main characters that could be found in a novel set in this location.
I don't have enough information to say for sure. But surely there would be the 'bad doctor' as a main character. There might also be patients who are affected by the doctor's actions, or other medical staff who either oppose or are complicit in the doctor's bad behavior.
The main character is probably the 'Doctor Tomorrow'. However, there could be supporting characters like a nurse who has been with him through thick and thin, a scientist who helps him develop new medical treatments, and a patient who is a symbol of hope for the future of medicine in the story. There might also be some characters from the government or regulatory bodies in this future world who either support or oppose the doctor's work.
I don't know for sure as I haven't read it. But likely there's the bad doctor himself. There might also be patients who are affected by his actions, and perhaps other medical staff who either oppose or are complicit in his deeds.
I don't know the specific main characters without more information. It could be the witch doctor themselves, of course.