[derendel]

At one point it would have been Derendel multiclassed Sorcerer/Rogue who began as a happy go lucky explorer but ended up bitter and resentful after the people turned to a false savior (who he then needed to kill to save them).

Currently I think it was Spector, a post apocalyptic inventor with psychic talents carrying a lot of guilt for things that are not her fault. Through her adventures she went from being a tool for others to making her own decisions and flirting with turning to the dark side. Ultimately she decided to improve the world for everyone. Too bad they hung her for it. :(