This is the guy you'd always want on your side when things weren't going your way. With his friendly smile, the somewhat 'relaxed attitude' suggested by the cigarette he's smoking, and his general air of worldly wisdom, Good Guy Greg is the guy who'll tell you to go home from a party when you're making a fool of yourself. He'll talk you out of a fight, and he'll give you that piece of relationship advice that makes all the difference.
Although he's replaced the cigarette with a toothpick, Greg seems to be the exact same 'gregarious' (sorry about the pun) person he always was. He makes his living as a commercial fisherman, and he has the exact same welcoming smile that tells you that you could unburden all your problems on him, and he'd still be able to guide you towards the light at the end of the tunnel.