Malphaseus is a Wyld Fae, that currently resides in the Veneficas Forum. it is unclear which affiliation, if any that he has, but he was involved in an investigation conducted by the Vatican City SAVE Office in 1936. The most common name for this type of Wyld Fae is a Satyr.
The individual provided information to the Vatican City SAVE Office in exchange for a severed finger provided to him by Oliver Merbach. This provided the group with information critical to put them back on track in their investigation.