Mind Flayer (Stranger Things)

Origin: Stranger Things

Type: incomprehensible

Alignment: Evil

Sapience: sapient

Gender: unknown

Description
The Mind Flayer is an eldrich abomination and the main antagonist of Stranger Things series, being the master of the Upside Down, an alternative dimension analogue to our world which are a desolated, eerie version of it. The Mind Flayer has a mind have and uses it to commande other creatures from Upside Down, like "demogorgon" and vines.

Appearence
The original Mind Flayer is a gigantic approximately 50 stories tall[1 ] smoke-like being of incomprehensible form, but resembles an animal with tentacles and xenomorph head, whose body appears to be composed by minuscules silver-black particles. It basically behaves like a living cloud. Like many incomprehensible eldritch abominations, its gender is unknown.

After possessing Will Byers and being expelled from his body in second season, the fragment of it remained in our world, only to wake up in third season, when the Upside Down portal was opened again by russian scientists. It starts exploding hats to assimilate they biomasse in order to form a minor physical form of original Mind Flayer. Later, it made the same to human beings until the proxy form grows up in a gigant creature. It apparently has his human victims injecting fragments of his smoky mass into them, basically in the same way it has Will Byers, in the second season, and Billy Hargrove, in the third.

Personality
Unlike other Stranger Things creatures, like the demogorgon, the Mind Flayer showed, especially in third season, have sapience, which made possible classifiying it as an Complete Monster/Pure Evil being due how much henious and cruel it was throught the series.