Yentl is the main character in 'Yentl the Yeshiva Boy short story'. She is a very unique character as she dares to break the rules of her community by dressing and acting like a boy to study in the yeshiva. Besides Yentl, there are likely some supporting characters. For example, there could be an older rabbi who is respected in the yeshiva. His teachings and his attitude towards Yentl (while he believes she is a boy) can have a significant impact on the story. There may also be some other students, who, through their relationships with Yentl, either help or hinder her in her journey within the yeshiva.
The primary character is Yentl. She drives the story forward with her bold decision to pose as a male student. The other characters that play important roles are probably the teachers in the yeshiva. They are the ones who teach Yentl (thinking she is a boy) and their interactions with her are crucial to the development of the story. There may also be fellow students who become friends or rivals to Yentl in the yeshiva setting.
The main character is Yentl, of course. She is the one who disguises herself as a boy to enter the yeshiva. There are also likely other characters in the yeshiva, such as the rabbis or other students, but Yentl is the central figure around which the story revolves.