Here it is! Phosphorous the abyssal dutch angel dragon. Her corruption nearby St. Marks Mental Hospital during the 19th century set the stage for many people's souls transformation into pretas and rakshasas. Phosphorous identifies itself as female even though it is genderless and very few individuals can see it.
Known people corrupted by her abyssal energy include:

Dr. Oswald--insane asylum doctor
Other doctor who worked at the insane asylum
Various mental patients
The faceless farmer who died during the 80's
Circus folks during the 19th century
A marine biologist who drowned while wearing a deep sea diving suit