I don't know the 'Suspect X Hindi Story' well, so I can't say for sure who the main characters are.
The main characters are the brilliant but troubled mathematician suspect, and the woman for whom he has great devotion. There is also the detective who is trying to solve the case.
The main character is the one who shows the extraordinary devotion, let's call him the protagonist in the context of his own story within the novel. Then there are the antagonists, perhaps those who oppose or try to uncover the secrets behind his devotion. There may be a female character as well, who could be the object of the suspect's devotion or someone who has a special connection to him and helps to reveal different aspects of his character.
I haven't read the 'Suspect X Hindi Story', but in a typical story with a suspect, there is usually a build - up of events leading to the identification of the suspect. In a Hindi story, it could involve Hindi - speaking characters, their relationships, and their motives. There might be a detective or an authority figure trying to solve the mystery around Suspect X. The story could also touch on themes like justice, truth, and the human condition within the Hindi cultural framework.
As I don't know the 'hindi vasna story' specifically, I can't say for sure who the main characters are. It could be an ordinary person, a hero, or a group of people with different personalities.
In the 'gunda hindi story', the central figure is the gunda. Around him, there could be family members who are either ashamed of his actions or trying to protect him. There might be rival gangs or other local toughs with whom he has conflicts. And then there could be some sort of mentor - like figure, maybe an older person in the community who tries to guide him away from his life of crime, but the gunda may or may not listen to this person.
As I'm not aware of the 'hindi mastram story' in detail, it's impossible to say who the main characters are. It could be common people, like a farmer, a shopkeeper, or a student, or it could be more fictional characters such as a magician or a spirit. But this is all just speculation.
The krishna hindi story has several main characters. Krishna himself is the most prominent. Radha, with whom he shares a deep bond of love. His biological parents Devaki and Vasudeva. And in his life in Vrindavan, his friends like Sudama. Also, there are the various sages and seers who interact with Krishna at different points in the story, all contributing to the rich tapestry of the krishna hindi story.
I don't have enough information to determine the main characters in the'safalta hindi story'. It could be an ordinary person, a hero, or even an animal depending on the nature of the story.
Since we don't have the details of the 'hindi jasoos story', it could have a range of main characters. If it's a traditional detective story, the main character is the detective, who could be a middle - aged man with a sharp mind. There could also be the villain, who might be a cunning criminal trying to outwit the detective. And perhaps a love interest for the detective, who could be a journalist or something similar, adding an extra layer to the story.
I don't know the 'antarvasna hindi story', so I can't tell who the main characters are.