The Mind Flayer
It’s a monster from an unknown dimension. It’s so ancient that it doesn’t even know its true home. It enslaves races of other dimensions by taking over their brains using its highly-developed psionic powers. It believes it’s the master race. It views other races, like us, as inferior to itself. It wants to spread, take over other dimensions. We are talking about the destruction of our world as we know it.
Stranger Things 2: Chapter One: MADMAX
Nobody normal ever accomplished anything meaningful in this world.