Zuul is the Gate Keeper of Gozer and holds the power to summon its master. When such a summons is to be carried out, Zuul manifests itself in the physical world and possesses an appropriate host. Using this host, Zuul will stake out a location near the place where the gate is to be created and wait for Vinz Clortho, Keymaster of Gozer, to arrive and form a union with it. Once this union is completed, a gateway to Gozer's realm is opened. While it is not known for direct confrontations with most humans, it is a single-minded, ruthless demigod with great potential power and should not be treated lightly under any circumstances.