From my 10 year and counting campaign...
My absolute favorite: Delaan Mersei Valspar, aka Mercy. A rogue and assasin of particularly quick wit, charm and singlemindedness. A playful, at times girlish cold-blooded killer who would do just about anything to advance the position of her "noble House"; an ancient thieves guild, one of many competing in a phenomenally wealthy mages city which was metaphor for corporate America... Picture Mafia families working for Microsoft run by wizards... {Linden LaRouche supporters stay away!}.
Mercy was an asset and bane to a married PC who happened to be one of the chosen of the Goddess of Luck. Mercy wanted him to father a child, whom she assumed would be blessed by fortune from birth. Said PC's wife is a mage in the service of a LG theocracy, minor noble, and all around sweet girl. Capable of hurling lightening bolts...
One of the most rewarding role-playing sessions I've played was the encounter between Mercy and the lucky guy where she explicitly detaied her interest/designs on him. Since trust was an issue, Mercy suggests the conversation be carried out while both parties are under the influence of a sorcerous street drug that radically increased the users empathy, making deception quite difficult... So I got to play a flirty Mafioso on Ecstacy discussing her Machiavellian schemes while trying to pick someone up. Quite a challenge...
Close runner up: Katlinel, Goddess of Luck and Fortune. Actually, she's more like the Goddess of Television. She treats the world as her own personal soap opera, bending the laws of probility to favor those her entertain her the most. She's also in the unlikely position {among her pantheon} of being the deity best positioned to save the world from the Apocalypse. Her pantheon are all members of an immortal race who merged themselves with the World of Ideas {becoming the living incarnations of the elements, honor, mercy, justice, etc --a purely Platoic relationship, really...}. This had the unfortunate side-effect {over the millenia} of depersonalizing them; their egos have begun to fade away. Except for Katlinel, who became the embodiment of Self. So she's bored, solipsistic, able to dispense miracles to those who amuse her, and last among the deities possesed of real self-awareness. And a devlish sense of humor...
