I've finally decided on a character and started using a halfling rogue, which works great because I like to steal and plan on causing trouble/being a smartass but I also plan on having a mean streak and even killing when we have the option not to. Should I just have a rough background to explain for that or what? I don't want to play too far out of character (I wanted to roll a drow, it suits my play style and attitude but from what I hear there is a lot of controversy over playing a drow so I'd just rather avoid it) but I don't want to be a "typical" halfling. Any suggestions?