The Demogorgon is a predatory humanoid creature from the Upside Down, serving as the primary antagonist of Stranger Things Season 1. Origin and Entry into Hawkins The Demogorgon originates from a parallel dimension called the Upside Down, a dark and decaying reflection of the real world. It enters Hawkins, Indiana, in November 1983 after Eleven, a child with psychokinetic abilities, makes transdimensional contact during experiments at Hawkins National Laboratory. This contact opens a portal between dimensions, allowing the creature to cross into the real world.