You are the Smartass! You are rational, extroverted, brutal, and arrogant. In fact, you could very well be the anti-Christ, as you are almost the exact opposite of everything Jesus was supposed to be. While Jesus says love your enemy, you say love beating the crap out of your enemy. While Jesus raises the dead, you raise hell. While Jesus walks on water, you tend to sink. You probably consider people who are emotional and gentle to be big pussies who are obviously in lesser stature than you. You have many flaws, despite your seeming intelligence and cool-headedness. For instance, you aren't very nice. In fact, you're probably an asshole. And you are conceited and self-centered. Not only that, but you are very loud and vocal about all this, seeing as how you are extroverted. There is no better way to describe you than as a "smartass", I'm afraid. Perhaps just "ass" would do, too. But that's a little less literary and descriptive. At any rate, your main personality defect is the fact that you are self-centered, mean, uncaring, and brutally logical.
To put it less negatively:
1. You are more RATIONAL than intuitive.
2. You are more EXTROVERTED than introverted.
3. You are more BRUTAL than gentle.
4. You are more ARROGANT than humble.
Your exact opposite is the Emo Kid.
Other personalities you would probably get along with are the Capitalist Pig, the Braggart, and the Sociopath.