Halo 3 and Call of Duty 4: Modern Warfare both have vast multiplayer options. However, there are 7 types of players that all will eventually encounter.
The New Guy makes it a point to let everyone know that this is his first time playing the game. His utter lack of even the most basic skills is astounding, as it seems to take him hours of continuous death before even learning the most basic controls. Other players, however, often love him, because he presents an easy way for them to pad their kill stats.
Much like the New Guy, only a girl. Makes sense, right? The major difference is that the New Girl is usually playing with her boyfriend, and she wants everyone to know this. She constantly reminds everyone that she's playing the game because her boyfriend is really good and she wanted to learn. This fact, however, merely makes others playing wonder why he's not also playing if he is in fact that good. Surprisingly, the New Girl usually manages to do far better than the New Guy, proving once again that video games and boobs can coexist.
The Sniper claims to know all the best spots to hide out and pick off other players. He spends hours finding these hiding spots, and he camps out for as long as necessary in order to get kills. However, his hiding spots are usually about as hidden as Pacman Jones at a strip club. Also, he usually shoots with the precision of an alcoholic with Parkinson's Disease. This makes them a very easy target for those with common sense and very basic deductive skills.
The Rampaging Maniac has a level of impatience that is astonishing to most. The Rampaging Maniac is the man who, with reckless disregard for any kind of stealth, runs around the map, charging all he sees. He usually is unsuccessful, however, since he has no tactical skills, often knows nothing other than the "Shoot" button, and often has inferior weapons due to his unwillingness to have the patience to find better weapons lying around.
This man appears to know everything about military operations. He throws around military terms whenever possible, and references quotes from famous military leaders. Sure, he uses the terms in a completely incorrect context, and yeah, the quotes are completely fictitious ("Master Chief will one day rule the world."-Napoleon), but at least he's trying. And hey, at least he's not the New Guy.
This guy brags throughout the whole game about being the unbeatable master of whatever game he is playing. He knows all the secrets, all the hidden spots, and everything else there is to know about the game. He is like the Sniper, the Rampaging Maniac, and the Military Expert rolled up into a ball of complete failure. The "Master", who became an "expert" through his experiences of beating the game on the easiest difficulty level, also possesses what is quite possibly the largest arsenal of excuses in the history of man, and is willing to pull one out of his ass at any time.
This guy sounds a lot like the "Master" at first, with constant, incessant boasting. The only difference is that the Master is not lying. He kills mercilessly, with no regard for the feelings of the other players. He truly does know all the secrets of the game, and he uses them to bring about mass destruction. On the bright side, the Master is usually the least physically-imposing of these types, so those who he destroys can take comfort in knowing that they'd kick his ass in real life.