The Meepers were a race of red, cloud-like entities. They lived in an area of the universe not yet explored, and how they got here is unknown. They posesssed the bodies of creatures, turning them into mindless killing machines.
They are not welcome by the Council or the Zephyrians. Their language is made clear by the one thing a possessee ever says: meep.
The last of them was killed in late 2013, when it posessedd the body of a human friend of a Zephyrian researcher disguised as a human.