The main characters are the snake and the helpful man. The man is the one who shows kindness by helping the snake, and the snake is the one who the man helps but then turns on the man.
There are two main characters in the snake and the helpful man story. First, there is the man. He is a helpful person who sees the snake in trouble and decides to help it. Second, there is the snake. It is in a difficult situation at first but then shows its ungrateful side by harming the man who saved it.
Well, in the snake and the helpful man story, the moral might be about not expecting good in return from every act of kindness. The man helped the snake out of compassion, but the snake bit him. It shows that some things are just in their nature to be harmful, regardless of how much kindness you show them.
The main characters are obviously the snake and the man. The snake represents danger or perhaps a force of nature that is not easily tamed. The man is the one who tries to interact with the snake in some way.
I'm sorry, I don't know the 'the helpful friends story' well enough to say who the main characters are. Maybe it has characters like a brave friend, a kind - hearted friend, and a clever friend.
As I don't know the 'robinsons snake man story', I can't be sure about the main characters. But from the title, it seems that Robinson and snakes are likely to be the main characters. There might also be other characters who are related to Robinson's snake - related experiences, like his friends or family members who might react to his snake - related activities.
Often, there is a male protagonist who might be a curious traveler or a brave warrior. He might be the one who has a special encounter with the snake woman. His actions and reactions towards her are crucial in driving the story forward. He could either fall in love with her, despite her snake - like nature, or try to defeat her if he perceives her as a threat.
The main characters are, obviously, the girl and the snake. The girl is likely a symbol of innocence or perhaps ignorance in the story. And the snake, which is often seen as a symbol of cunning or danger in many stories from different cultures.
Since I don't know the exact 'the black snake story', if it's a typical one about a black snake in nature, the main character would likely be the black snake itself.
In the boy and the snake story, the two main characters are a boy and a snake. The boy is likely a naive or kind - hearted character who stumbles upon the snake, which is a symbol of danger or deceit in the story.
The main characters are an Indian and a snake. The Indian is probably a human figure who has some sort of encounter or relationship with the snake, which forms the basis of the story.
Obviously, the main characters are the snake and the woman.