stay puft is seen only briefly in the movie. he is "conjured up" as a new form for the sumerian god gozer, who previously arrives atop an apartment building at 55 central park west in new york city in the form of an androgynous woman with metallic skin and eyes. after a quick battle with the ghostbusters she vanishes, and then as a disembodied voice gozer tells the ghostbusters that the next thing they think of will be the form it will assume to destroy their world. ray stantz (aykroyd) instead makes the decision to think of this marshmallow mascot when the ghostbusters are given a choice as to which physical form gozer will conquer the world in.