I'll have to say Pyraxis, as she by far has the most maniacal tendencies of them.
Here comes a very, very strange one: If you became a weird, godlike, disembodied power of some sort, at some unknown, fantasy-esque point in time, space and whatever else there could be, would you rather be a pretty "normal", mellow one, respected by people for your wisdom, or a massive force of maniacalness of somewhat questionable sanity that made whatever puny humans came in contact with it drop to their knees in awe, forever turned into your maniacally giggling servants that would come to form an empire that would take over the world?