The Black Vesper (a.k.a Joshua B. Nate) is the uncle of Lucianvesper09, and is also a member of Medusa. He has raised Lucianvesper09, and has spied on governments across Asia for more than 30 years. His current age is 56. He has dressed all in black for his entire life, sometimes in grey.
it is unknown whether this was on purpose the way The Black Vesper dresses is the same as Fiske Cahill.