the stay puft marshmallow man is a fictional character from the "ghostbusters" franchise, which sometimes appears as a giant, lumbering paranormal monster. it first appears in the "ghostbusters" (1984) film as a picture logo on a prop package of marshmallows in dana barrett's apartment, on a graffiti advertisement on the building next to the ghostbusters' hq, and then in the climax of the film as the physical manifestation of the sumerian deity gozer. subsequently, it has been incorporated into many other ghostbusters media, including the animated series "the real ghostbusters", comic books, a stage show, and video games.