Saitou is a former second progenitor of the vampires, who later acts as an experimental subject and assassin in the Brotherhood of a Thousand Nights, later referred to as the Hyakuya Sect.
SpoilerHe previously used the alias Makoto Kijima while working for the Thousand Nights, and Urd Geales addresses him as Rígr Stafford. He is a second former member of the Progenitor Council.SpoilerHe Sired Ferid Bathory & Crowley Eusford (by Ferid Bathory doing.)
