Stay Puft is a large round human shaped figure with white arms, legs, head and body made of joined marshmallows, he has a white sailor hat, with a button on top, which holds a red ribbon off to one side, and along the hat’s lower rim is circled a blue ribbon with ‘Stay Puft’ written across its front. Around his shoulders is a blue vest with a single white stripe that is near its edges. Below this on his front is a red bowtie. His height in the novelization of the movie is mentioned at one hundred feet, however other sizes have also been suggested such as a height of 112.5 feet.

One of two physical bodies of Gozer, a god, who is defeated when Stay Puft is destroyed.