I'm thinking of a Scion of either Loki, Set, or Aphrodite, a fairly crooked type. She cares about herself, her friends, and not letting the Titans win, though not necessarily in that order. The rest of the world is pretty much fair game.
(Loki seems like the most obvious choice here, but there's no guarantee that he's going to side with the Gods, so...)
EDIT: Hmm...Hermes might actually work, too.