The character assumed by the author in his writing is

The character assumed by the author in his writing is called the persona. The persona is a literary term that refers to the character that the author creates to be the narrator or speaker in a literary work. The persona can be similar to or different from the author, and can provide a unique perspective or voice to the text. It is important to note that the persona is not always the same as the protagonist, who is the main character in a story or play.