an Sidhe (Irish Fae) with issues all his own
Joscelin is not quite all there, moments of emotion come at rare times, and reactions might not be what one expects. He is forward though, and does not ever seem to tell a lie. He is curious but not to the point of getting himself in danger.
His charm and a long-bladed sword
It takes time to heal old wounds, but when those wounds include a great betrayal, they take forever. Joscelin was exiled from his family for falling in love with a human, he was willing to turn his back and live forever outside the world he knew.
However, those that hated him didn't want him to be happy. They killed the boy that he cared for deeply, and severaly beat Jocelin. It took him forever to heal his wounds, but never completely got over the images in his mind.