With Netflix's Stranger Things now over and done, let's take a look back at the Upside Down's most terrifying monsters. Here they are, ranked.

Add Yahoo as a preferred source to see more of our stories on Google. Millie Bobby Brown's Eleven faces down the Mind Flayer in "Stranger Things 5" (Credit: Netflix) One of the more befuddling ...

STRANGER THINGS: SEASON 5. (L to R) Joe Keery as Steve Harrington, Caleb McLaughlin as Lucas Sinclair, Gaten Matarazzo as Dustin Henderson, Natalia Dyer as Nancy Wheeler, and Charlie Heaton as ...

The Demodog was first introduced during the second season of Stranger Things as a mid-stage evolution of the Demogorgon. These creatures are quadrupedal and incredibly fast, utilizing their numbers to ...