I'll pick out some of the people I listed and name why: Bronn is interesting because he really does seem to be only motivated by money, but he also isn't a fickle employee. He knows a cash cow when he sees one and sticks by them with loyalty. That's something that makes him stand out to me is that he's a bastard but he has a sense of companionship with Tyrion anyway. I think a lot of bounty hunters seem to be solely motivated by money but also have an air of mystery about them that makes you wonder about their history. Boba Fett for instance is a rather mysterious character in Star Wars. However, he's iconic in that he looks cool and has that air of mystery about him. Of course the prequels sort of ruined that... I always like that air of mystery in my own bounty hunters. They have some tragic past that the reader only gets glimpses of. Or maybe they just get joy in capturing people. Their motivation to hunt people down for money may stem from other purposes: feeding a family, paying off a debt, self-preservation, etc.