Question: do nancy and jonathan kill the demogorgon?
Answer: Eleven Destroys the Demogorgon Nancy Wheeler and Will's older brother Jonathan set a bunch of booby traps for the Demogorgon, hoping to catch it in our world so it can't kill Joyce and Hopper in the Upside Down. ... They manage to briefly trap it and set it on fire, but it escapes to the Upside Down.