Herovit's Worldby Barry N. Malzberg
Jonathan Herovit is a hack SF writer. Jonathan Herovit does not believe in this sort of nonsense, alien beings, author's characters invading their realities from other dimensions, as his character, Mack Miller, has begun to invade his. Worst of all, his pseudonym, Kirk Poland, is trying to take over his body, trying to put an end to Herovit's incompetence as a writer, his incompetence as a human being, once and for all.
Details updated August 19, 2021
Barry Nathaniel Malzberg (born 1939) is an American writer and editor, most often of science fiction and fantasy.
Barry N. Malzaberg has written several stories under the pseudonym of K. M. O'Donnell. He has also written The Lone Wolf series under the pseudonym of Mike Barry.
Barry N. Malzberg. Wikipedia.