I'm not sure exactly who the main characters are without reading it, but usually in a story like this, there would be a strong leader type. Maybe someone with survival skills or knowledge.
Often in such a graphic novel, there might be a scientist or an engineer among the main characters. They would use their knowledge to build things on the island and try to understand the strange happenings. There could also be a young and curious character who drives the exploration aspect.
There's Cyrus Harding. He is a very intelligent and resourceful man. His knowledge in various fields like engineering and science helps the group a great deal. Then there's Gideon Spilett, a journalist who is observant and can record their experiences well. Also, Pencroff, a sailor with practical skills such as building and sailing, which are useful on the island.
There's probably a character like Hank Parsons. He could be the one who has certain skills or knowledge that helps during the adventure on the mysterious island. And Sean Anderson, as mentioned before, might be a young and curious character who drives the plot forward by his eagerness to explore the island.
One of the main themes could be survival. The characters are likely stranded on an island and have to figure out how to find food, shelter and protect themselves. Another theme might be exploration as they discover the secrets of the mysterious island.
Obviously, Elsa is one of the main characters. But without reading the novel, it's hard to say who else might be important. There could be a guide character who helps Elsa on the island.
I don't have enough details to know the main characters. But they could be survivors if the story is about a disaster - like a brave sailor, a resourceful young person, or an experienced adventurer.
Maybe there are some fearless explorers as main characters. They might be on a quest for knowledge or treasure on Skull Island. There could also be a character who has a special connection to the island, like a descendant of an ancient tribe that once lived there.
I'm not entirely sure as it can vary depending on the specific adaptation of the story in the graphic novel, but often there is a protagonist who is investigating something strange on the island.
The main character is the person who lands on the island. And of course, Dr. Moreau is a very important character.
I don't know the exact main characters as I haven't read it. But I would assume there are some unique misfit toys that stand out. Maybe there's a toy with a broken part but a big heart, or a toy with a strange shape that has some special skills.
Since it's based on Skull Island, there could be adventurers seeking the secrets of the island as main characters. Also, there may be some characters who are there by accident, like a stranded pilot or something. And of course, Kong himself could be considered a main character in a sense, as his presence shapes the whole story and the actions of the other characters. There might also be a leader figure among the human characters, who tries to guide the group through the challenges of the island.