as he explains, "it just popped in there", and that he "tried to think of the most harmless thing", describing mr. stay puft as "something that could never possibly destroy us". moments later, a giant stay puft marshmallow man is seen walking towards the apartment building. the ghostbusters shoot at stay puft with their proton packs, setting him on fire, but do not succeed in stopping his advance. they then get the idea of shooting at the portal through which the god emerged, by crossing the streams of all four of their packs. the plan triggers an explosion that destroys the gate and stay puft, reducing the latter into molten marshmallow cream that rains down onto the roof of the skyscraper and bystanders on the street below.