Well, Max is the most important one as she can go back in time. Then there's Chloe. She's kind of wild and has a troubled past. Warren is a guy who likes Max. He's into science and stuff. And don't forget about Principal Wells. He's in charge of the school where a lot of the story takes place. There are other characters too, but these are the main ones that really drive the story forward.
Sean Diaz is a very important character. He is the older brother and is responsible for taking care of his younger brother. He has to make many decisions that affect their journey.
The main characters are likely to be those from the original 'Life is Strange' game such as Max, who has the power to rewind time, and Chloe, her best friend. There may also be other important characters like Warren or Victoria. Since it's based on the game, these characters will play significant roles in the graphic novel's story, whether it's in their relationships with each other or in dealing with the strange events that occur in the 'Life is Strange' world.
There could be characters that were introduced briefly in the main 'Life Is Strange' game but are now the focus. Maybe it's Chloe's friend from school who has their own story to tell.
I'm not entirely sure who the main characters are in the side story. It could be some characters who were secondary in the main Life Is Strange 2 but get more focus here.
Chloe Price is also a main character. She has a strong bond with Max. They have a complex relationship that has been through a lot over the years. And then there's Rachel Amber. She is kind of the center of a mystery in the story, and her disappearance is what sets a lot of the plot in motion.
I'm not entirely sure as the game might not be widely known, but typically in a 'Life Is Strange' - style game, there would be a protagonist who is at the center of the strange events.
Max is definitely one of the most interesting characters. Her ability to rewind time makes her character full of potential and complexity. She has to deal with the moral implications of using her power. Chloe is also interesting. Her rebellious nature and her deep connection with Max create a lot of drama and emotional depth in the story.