It's hard to tell without reading the story. However, the main character could be someone with a special ability to see or communicate with the ghost. And the pleading ghost is another main character. Maybe there are some antagonists as well, like people who don't believe in the ghost's plea and try to stop the protagonist from helping the ghost.
Since I don't know the details of the story, I can't say for sure. It could be the ghost itself as one of the main characters, and perhaps the person or people the ghost is pleading to.
Well, it could be a story where the ghost has a plea related to its past life. Maybe it was wrongly accused or killed, and in the afterlife as a ghost, it's pleading for the truth to be known. It could also be pleading for someone to help it pass on to the other side, perhaps because it's stuck in a limbo between the living and the dead due to some unresolved issues.
In 'the ghost story', the main characters could be the people who encounter the ghost. Maybe a group of curious kids or a brave investigator.
As I don't know the particular '1930 ghost story', it could have a protagonist like a young journalist who is investigating the strange happenings. There might also be an old caretaker of the haunted place who has some secrets.
The main character in the Ghost of Tsushima main story is Jin Sakai, a samurai with a strong sense of duty towards his homeland. His uncle, Lord Shimura, is an important part of the story. Lord Shimura represents the traditional samurai values. Another important character is Yuna. She is a thief - turned - ally of Jin. She has her own skills and knowledge of the island which prove invaluable to Jin in his fight against the Mongols. There are also Mongol characters like Khotun Khan, who serves as the main antagonist, driving the conflict in the story.
Since I don't have the full details of the 'ghost of razgriz story', it's hard to say exactly who the main characters are. But it's likely that the 'ghost of razgriz' itself is a main character, as the story is named after it. There may also be other characters who interact with the ghost, such as a brave hero who tries to confront it or a wise old sage who knows the secrets about it.
The main characters are likely to be the members of the Walton family, but without more specific information, it's hard to name them all precisely.
Well, it depends on the version of the story. Sometimes there's a lone traveler who stumbles upon the strange happenings in Blackwell. Another common character could be the ghost itself, which is often described as a shadowy figure.
Since I don't know the specific 'waltons ghost story', I can't say for sure. But likely it would include members of the Walton family like the parents and the children.
The main character is Major Motoko Kusanagi. She is a strong and intelligent cyborg. Then there's Batou, her partner in the law enforcement agency. He is a reliable and tough character. Another important character is Aramaki, who is in a leadership position within the agency.
There might be the ghost itself as the main character. It could be the spirit of someone who had a connection to the well in the past.