Btvs Although this article is based on canonical information, the actual name of this subject is conjectural.
My Watcher once showed me a photograph of [a vampire]. A blurry photograph.
―Vi [src]

Prior to her arrival to Sunnydale, Potential Slayer Vi was trained by a Watcher, who did little to further Vi's experience, never showing her a real vampire, save for a blurry photograph.