My character Mani Karnik in her original form as Dheu, or Death. She starts out as that cute little child, and generally remains that way until she needs her full power. She then morphs into the older version of herself.
Dheu's power, besides killing people (which she does relatively infrequently), is to turn back the river Stux (a play on Styx. not a spelling error). That way she can control her age, among others, as well as reversing a 'wrong turn' made by the river on it's course.