User blog comment:AustinDR/PE Proposal: Mind Flayer/@comment-34055410-20190720040747/@comment-27022982-20190721002131

The Mind Flayer stands out because it controls the other monsters from the Upside Down (including the Demogorgons) through a hive mind, so they do nothing except what it has them do. It basically sets the heinous standards for Stranger Things.