Stranger Things killed off a crucial main character in the series finale - but are they actually still alive? During the Wednesday, December 31, series finale, Eleven (Millie Bobby Brown) survived multiple near-death experiences while fighting to destroy Vecna (Jamie Campbell Bower). Hopper (David Harbour) helped keep her alive while Kali (Linnea Berthelsen) was shot. Eleven was ultimately able to face - and kill - Vecna once and for all but she didn't return to Hawkins.