Richter Reuben

Richter Reuben is a vampire slayer formerly associated with Hellsing.

Though he has been hinted to be a Saiyan, the character's creator has done nothing to outright confirm nor disconfirm this. It was likely a joke, a jab at the fact that he and Avi acted so similarly.

Richter was one of the only survivors from the old Hellsing Order after Marcus destroyed it.