As for me I am Agent J from "Men in Black" and "Men and Black II"
You’re a rough-around-the-edges renegade in constant need of the right partner to keep you in check and show you the way. You’ve got the wardrobe, you’ve got the attitude and you’ve got the ability to instantly change minds, but you’re not quite Bond. No, you’re more a pan-galactic Dr. Doolittle, knowing – usually the hard way – that it helps to talk to the aliens (or, more to the point, the exasperating humans in your midst) to keep the peace. For all your ego – erm… confidence – you do have a few crucial control issues: You tend to be an impatient backseat driver, but, bless you, your heart’s always in the right place. Yes, ultimately it’s a lonely life and, tough as you can be, you do slip occasionally and wear your heart on your sleeve. But if that’s what it takes to see the light, well… maybe it’s worth it.
This isn't exactly accurate as much of the quote says, but as far as the "you’re more a pan-galactic Dr. Doolittle, knowing – usually the hard way – that it helps to talk to the aliens (or, more to the point, the exasperating humans in your midst) to keep the peace." part goes, that is correct.
So, which Will Smith character are you?