Everything We Know About the New Stranger Things Villain

The looming presence of Vecna is made even more frightening due to the fact that Eleven, played by Millie Bobby Brown, is powerless to help.

“Part of the drive and tension of this season is that we have this big new evil emerge in Hawkins, and for the first time ever, Eleven is not there,” Duffer said. “Not only is she separated by distance, but at the end of season three, she’s lost her powers. So even when she learns about what has happened in Hawkins, she is unable to help them in the same way she has before.”

As if that weren’t scary enough, Vecna comes with his own army of deadly bats. Sure!

“We always like to introduce a new (Demogorgon) creature, as you will, and so we were excited about introducing demo-bats,” Duffer told EW. “Maybe one of them alone is not very dangerous, but when there’s hundreds and hundreds of them coming to you at the same time, they’re very, very deadly.”