I have two types of characters to which I am almost always attracted. The first type is those that are firmly chaotic neutral, the quirky, ever-so-slightly unhinged, morally ambiguous individual that does what they want, when they want, to whom they want for little to no reason, yet will still help others when they truly need it (which perhaps explains my current obssession with the entire cast of Touhou, Marisa especially).
The second type I find appealing is almost the exact opposite; the stylish, controlling, always composed bastard that knows what they want and will do anything to achieve it, regardless of the consequences to others, yet still finds time to be polite and considerate in their daily proceedings. Unfortunately however, I haven't actually had the opportunity to play as someone like that ("evil" options in RPGs are almost inevitably thugs and "for the lulz" types).