Well, Randolph Carter is a central character. He has a lot of experiences that are intertwined with the Cthulhu mythos. He seems to be both a victim and a seeker in a way. Henry Wentworth Akeley is another important one. His letters are a big part of the story, and they give a lot of insights into the nature of the Cthulhu - related threats. Professor Albert N. Wilmarth is also important. He's the academic type who tries to study and understand the strange phenomena related to Cthulhu. He's the one who tries to bring some sort of order to the chaos that is the Cthulhu mythos, but often finds himself in over his head as the true nature of these things is revealed.
One important character is Randolph Carter. He has a number of encounters with the strange and the otherworldly in the Cthulhu mythos. Another is Professor Albert N. Wilmarth, who gets involved in investigations related to the Cthulhu cults and their strange doings.
One important character is the protagonist who discovers the secrets related to Cthulhu. He is the one who gets drawn into the mystery and has to face the horror. There are also the cultists. They play a crucial role as they are the ones who worship Cthulhu and try to bring about its return. And Cthulhu itself, of course, as it is the source of all the horror and the main entity that drives the whole story.
One important character is Professor Albert N. Wilmarth. He gets involved in investigations related to the strange happenings and the Cthulhu cult. Another is Henry Winthrop Akeley. He has interactions with the cultists and the otherworldly forces. Cthulhu, as the powerful and terrifying cosmic entity, is central to the whole horror concept in the novels.
There's Buck, of course. He experiences a lot of changes. Then we have Spitz, who is Buck's rival in the dog team. Their conflict for leadership is a significant part of the story. Also, Perrault and Francois, they are Buck's first masters in the Yukon. They train Buck and the other dogs for sled - pulling.
Buck is the most important character. He's the dog whose journey we follow throughout the story. Then there's John Thornton, who forms a special bond with Buck. His kindness towards Buck is in contrast to some of the harsher human characters.
I'm not sure specifically as I haven't read it, but likely there are investigators. These could be people with different backgrounds like a detective, a scholar, or a journalist, all drawn into the mystery of the Cthulhu Mythos.
There's often the investigator character who is trying to uncover the secrets of the Cthulhu mythos. Also, there are the cultists who worship the ancient and terrifying entities.
Often there are investigators. They are usually the ones who stumble upon the dark secrets related to Cthulhu. For example, a detective or a scholar.
I'm not sure specifically as it depends on the particular story in the novel. But usually, there are investigators or people who stumble upon the dark secrets of the Cthulhu Mythos.
The main character is Francis Wayland Thurston. He is the one who discovers the strange and disturbing secrets related to Cthulhu. He pieces together various accounts and evidence that lead him to the terrifying realization about Cthulhu's existence.
There could be other characters like cultists who play important roles in the 'Call of Cthulhu 2018 game story'. The cultists are usually the antagonists, trying to bring about the rise of Cthulhu. And there might be some locals in the game world who either help or hinder the investigator with their knowledge or actions.