Shadownns

Shadownns, commonly referred to by personnel as Bloodsuckers, are an evil race of humanoid beings located on the mysterious snow planet known as Rykrof. The are antagonists in episodes 7, 8, and 9 in the animated series, Halo: Prepare To Drop.
==Description==
The Shadownns are always found in a tattered, black cloak. They seem to hover, constantly moving to keep their heart rate from going down. Their skin can never be seen, hiding under the cloak. They can kill by simply making a hole in an enemy's body, and "vacuuming" the host's blood out.