|Picture from Paranormal Animals of North America|
The Corpselight (also known as will o' wisp) has no taxonomic identification since even the experts cannot come to a consensus on the creature. It appears as a all of light, bluish-white in color that floats about 2 meters off the ground. It moves slowly, but has been known to quickly move to trap prey. Although not apparently sentient, it does drain life from its victims much like metahumans infected by HMHVV.
Corpselights are usually seen solitary in isolated, desolate areas. However, clusters of corpselights of six or more have been recorded.