A confession. When I’m creating non-player characters for my Traveller game I don’t even roll a dice. I just decide what their characteristics and skills are. I suspect almost everyone probably does this. If I need a non-player character on the spot I grab the 1001 Characters supplement or Citizens of the Imperium. I will however also roll up non-player characters to have on standby, and really develop their personalities a little bit beforehand in a simple paragraph, because I like the chaos that the dice imbue into the character.