Name: Jerimiah Dark (alias?) Age: Unknown, appears about 30+
The exact origins of the person calling themselves Jeremiah Dark are at this time unknown. The Division of Advanced Humans, Research Branch, confirms references to a person or persons bearing this name as far back to England circa 1535 CE. Variations and translations of the Dark surname date to Egyptian papyri and wall art circa 2800 BC. The story and physical description is essentially the same a mysterious, masked, light haired male about 30 years of age. He maintains few contacts and has so far remained untraceable. The included photo (see above) is the only known evidence of his existence, assuming this is actually him.
The above photographic evidence, fits into the standard MO of this "Jeremiah Dark" All of the sparse historical references to "Dark" maintain that they are "monster hunters". As seen in photo J58BK245 he is in the process of successfully neutralizing two Homo Vampirii, or vampires. There are documents cataloging this MO as well as references to harpies, werewolves (Homo Lycanus), and, if it can be believed, a dragon in 1538.
This iteration of "Dark" exhibits advanced speed, reflexes, and better than average strength. It is conjectured that he may also possess enhanced eyesight including vision capability into the infrared range.
Any agent attempting to make contact should approach with caution. While documented, fatal attacks on non-advanced humans, "normals", are rare they are typically confined to the criminal element. However a few unconscious London Metro Police Officers (1898) and Roman vigils (see documents: Cicero X12A35 & Lyceneus X25A38), Security access 7 required) are documented.