A short, lanky elven thief with a foul mouth and a self-preservative, cocky attitude. Having been raised in the gutters of human society, his way of speaking is crude and carefree. 

I haven't settled on any specific accent for him, so anything works that's traditionally considered to be adopted by people with a low social/financial standing. At the very least, he has a habit of occasionally slurring words and taking shortcuts in his speech (that ain't th' way!), giving off the air that he's either not very well-educated or just doesn't care. 

Being a thief, he's also naturally conniving, impish, and mocking - in both a friendly, teasing way towards friends or to watch his enemies' faces redden with anger if he feels particularly confident. In a good mood, he generally comes off as an energetic jokester - when he's more serious, he may sound more uncomfortable, like he's not used to being upfront about how he feels with others.