I like the first guy - but not the glow / smudge around his eyes.
But then my opinion really doesn't matter - because it's your game and your vision. Looking at game characters in isolation doesn't tell me anything. Do they fit into the scene or with the style of the game? Are they roughly drawn as an example and you'll neaten them up for the game? Is the idea of the game to have roughly drawn characters? Is that the size they're going to be in the game - or will they be small?
Everyone here's going to have a different opinion and it's not really going to help you.