Hellbat

The Hellbat is a common Unversed enemy (almost moreso than the Flood). It has little HP, but almost impenetrable defense, as well as the annoying ability to leech health from the player, and tends to appear in swarms.

Design
The Hellbat is deep purple in coloration, except for its wings which are a deep red. Its eyes are unique amongst Unversed; they have a small curve before peaking in a sort of crested wave on the outer edges. When it opens its wings, you see that they have four sharp black claws on their wings. They also have two two-toed feet which are used to hang from ceilings.

Trivia

 * Their name and concept came fron the Television Trope "Goddamned Bats"; small, annoying enemies which aren't strong but are hard to kill and very distracting.