Gozer the Gozerian

Gozer the Gozerian, known by many titles like "the Destructor", "Volguus Zildrohar" or even "The Traveller", is a Sumerian shapeshifting god who is the major supernatural enemy of the first movie. As the game sequel covered, Gozer had cults worshiping him around 4000 B.C along with his minions also being worshiped. Entering into a dimension, Gozer uses the thoughts of those who witness his arrival to assume a fixed form within that plane of existence. Gozer's arrival set in motion in the 1920s by the actions of Ivo Shandor and come to fruition in 1984 when his minions Zuul and Vinz Clortho enter through, possessing suitable human hosts to open the portal on top of the building for their master to enter. Though originally in the form of a woman, Gozer uses Ray's accidental thought to assume the form of the Stay Puft Marshmallow Man before being destroyed. – edited from Wikipedia