👉 The term "grunswel" is a slang term that refers to someone who appears in a book, movie or television show with an appearance similar to that of a character from another story. It is often used to describe a character who has a significant influence on the narrative and is not directly portrayed as a main character. The term originated during the 1960s in Hollywood, where it was used by actors and directors to indicate their involvement with certain films or television shows.