Enslavers (Warhammer 40,000)

In the fictional Warhammer 40,000 universe, the Enslavers are a race of aliens that inhabit the Immaterium. They are also known as Psyrens, Krell, dominators or puppeteers. Enslavers drift with the currents of the Immaterium, and are drawn to the psychic emanations of other creatures. Once a suitable psyker host is located, the Enslavers form a parasitic mental bond, which over the course of a few days will turn the unfortunate, mind-controlled host into a living warp portal, so that more Enslavers can enter the material universe and find new hosts. The Enslaver Plague was killing off all the living creatures in the galaxy that the C'tan use as food, so the C'tan went into hibernation, along with their Necron armies, to wait for the galaxy to become repopulated.

Appearance
The Enslaver's body consits of a spherical lump trailing tentacles. The Enslavers can change their body color at will, and float up to three meters above the ground.