Alzrius
The EN World kitten
BOZ said:i also seem to remember a demon lord of yuan-ti from a Dragon mag... circa before issue #200? more details than that escape me, though.
Sch'theraqpasstt, a "major demon" who was formerly a Lesser deity and supposedly created the yuan-ti, according to the article. He's from "Ecology of the Yuan-ti" in Dragon #151, page 34.