the character as seen in the movie was created by linda frobos by using miniatures and optical compositing with billy bryan himself in a latex suit. the suit was made of two layers, an outer flammable layer and inner fire-proof layer. some of the finished movie's most noticeable errors appear in the stay puft scenes: he is seen with and without his bow tie, while in other scenes the optical rendering was so poor that he passes through a church rather than crushing it.