Odd how nobody voted for Nocturnal. I like his name, his sphere and the fact that he made the artifact that created the Gray Fox. He's not the best but he is good.
Nocturnal usually takes on the form of a female and is commonly referred to with the feminine pronouns ('she,' 'her,' and 'hers'). I was thinking about voting for her, but there just isn't enough about her... I mean, yeah, there's what we know from the imperial library's amalgamation of in-game lore, but I felt like I really knew what Hircine was about. Nocturnal... yeah, she has done some things, but I don't really know her motives... what makes her tick... her spheres are vague...