A Reddit theorist believes Eleven will be the villain of Stranger Things' Season 4. 1 / 8
The theory suggests El's bite from the Meat Monster will corrupt her. 2 / 8
It'll supposedly spread and infect her, making her the Mind Flayer's avatar. 3 / 8
This happened when it bit and possessed Billy in Season 3. 4 / 8
He then struggled to break its hold on him from the Upside Down. 5 / 8
The user suggests it's also similar to when Will got possessed in Season 2. 6 / 8
Apparently, once the Upside Down bites into you, it's a permanent mark. 7 / 8
It would be interesting to see the show's biggest hero fighting her closest allies. 8 / 8