I don't know specifically since I'm not familiar with this particular graphic novel. But generally in a crossover graphic novel, it could be well - known characters from the universes that are being crossed over. For example, if it's a superhero crossover, it might be characters like Superman and Batman.
Since there's not much information given about 'crossover the graphic novel', it's hard to say for sure. However, if it's a genre - based crossover, the main characters could be archetypal characters from those genres. For example, if it's a horror and adventure crossover, it could be a fearless adventurer and a terrifying monster as main characters.
I'm not sure who the main characters are without having read it. But they could be young people involved in the world of basketball, like players or coaches' kids.
The main characters would be the JLA heroes. Superman with his super strength and flight, Batman with his intelligence and gadgets, Wonder Woman with her combat skills and magic items. They are the ones who will be driving the story forward, fighting against the villains and solving the problems in the graphic novel.
Obviously, Superman, Batman and Wonder Woman from the JLA side. And from the Avengers, Captain America, Iron Man and Thor are very likely to be main characters. These are the most iconic heroes from their respective teams and are often the face of their franchises.
I'm not sure which specific 2019 graphic novel you're referring to. There are so many different ones out there, each with its own set of main characters.
There's no way to tell without having read the '442 graphic novel'. It could have a protagonist who is a detective trying to solve a mystery related to '442', or it could be a group of friends whose lives are changed because of something to do with '442'. Maybe there's a strong female lead or a young hero in the story.
I'm not sure specifically without reading it, but there could be soldiers. Given the time period of 1941, soldiers would be central characters as they were on the front lines of the war.
The main character is Winston Smith. He works in the Ministry of Truth, where he starts to have rebellious thoughts. His relationship with Julia, a young woman who also rebels against the system, is central to the story. O'Brien, on the other hand, is a complex character. He initially gives Winston the impression that he is against the Party, but later reveals his true loyalty to the regime, and plays a crucial role in Winston's downfall.
I don't know for sure as I haven't read it. But it could include real - life heroes like the first responders - firefighters, police officers, and paramedics.
Since I don't have specific details about the 1899 graphic novel, it's hard to say exactly who the main characters are. However, it's possible that they are characters typical of the time period, such as an adventurer exploring new lands, or a socialite dealing with the upper - class society. They might be complex characters with their own motives and desires, and their relationships with each other could be central to the story.
I'm not sure who the main characters in the 1919 graphic novel are as I haven't read it. But they could be ordinary people caught up in the historical events of 1919, like a young soldier trying to adjust to civilian life after the war, or a female activist fighting for social change.