Oh, duh. I just realized the characters who absolutely /do/ qualify, in a serious work, even. Though you have to get to the third book of the series to run into them -

The Markhagir and his followers from the Kushiel series. Arguably also at least one or two people earlier in the series, but that group is really the evil side of the Zoroastrian equation. Their motto is 'ill thoughs, ill words, ill deeds'.