Leech (Aliens: Extermination)

Though not given a specific name, the "Leech" is speculated to be a part of the Xenomorph life cycle. Like the Xenomorph facehuggers found in the same facility, they've been observed to hang from the walls and ceiling or inside bodies until one gets near enough, and then leap at the potential prey to attack.

They were likely a product of scientific experimentation, as the whole complex was run by Xenomorph-studying androids and they've never been documented elsewhere.

Appearances

 * Aliens: Extermination (2006)