You know, Ardata could possibly be a void player. Obscuring her sign is a void-y thing to do and her third eye could be a very unsettling thing which will deter other trolls (i think?). Her third eye could possibly make her a Seer of Void?

Not sure about her yet, Sign Obscuring could indeed be Void. ‘Probably Vriska’ could also mean she’s a Thief of Light. (Derse as to not overlap with True Scorpio). If she’s a Seer, it’d make her and Marvus Seers. He’s definitely a Seer, you know.