The Blob: Uses his girth during 2-player games to ensure that his opponent cannot reach the controls. On the plus side, you'd only run into these on the rare occasions when they weren't eating and the manager forgot to lock one of the double doors after wheeling a cabinet through.

The Swarm: Brings his entire posse to watch him play. This is actually a defensive tactic, as the closely-packed herd of onlookers work to prevent uninvited challenges, though it doesn't always work in the case of...

The Prodigy: A tiny tyke small enough to fit through the legs of a Swarm. Arcade managers will often accomodate them by providing stools and boosters to help them reach the joysticks. Don't let their youthfulness fool you, however, as they're practically born knowing how to play games, and will kick your ass without mercy. Worse, if you happen to beat them, they will cry, and their mother will complain about her child "being picked on" to the manager, who will kick you out.

Upchuck Charlie: Maybe it was the undercooked corn dogs or contaminated chili fries he ate, or maybe he got disoriented in the Afterburn machine, or maybe his mom left him alone with the flu and he came here while she was gone, but for whatever reason, he's just created a biohazard situation in the immediate vicinity of your favorite cabinet--or worse, on the controls, leaving you with permanently sticky buttons.

Two-Gun Pete: He always goes to the gun game, puts in two credits worth of coins, and plays co-op by himself. I wouldn't mess with him, myself. This is probably the only thing stopping him from shooting up his school.

Initial D...I.C.K.: The kid who thinks it's funny to put vulgar or semi-vulgar initals in when they get a high score. Just keep calm and beat their score ten times in a row or however many are needed to get them off the list. Asking the manager to reset by unplugging the cabinet and plugging it back in makes it too easy for the kid to come back and do it again.

Legendary Loli Master: Primarily found in fighting games, this warrior prefers to embarrass his opponents by kicking their ass as the little girl.

The Ninja: He watches in silence, observing your every move, learning how you play. When the time is right, usually right before the final boss so he doesn't have to face all the underlings, he inserts his tokens and destroys you.

Olivia Newton-John: The one who gets way too Physical at non-Dance-Dance-Revolution games. Be careful you don't get an elbow in the eye.

The LamePro: The guy who brings his gaming magazine with him to the arcade and probably sets it up on the control board to read as he plays. Though often, does not always coincide with...

The Boss-Man: Watch out, we're dealing with a badass over here. He's got a code that lets him play as the final boss or some secret character that he thinks will give him the advantage. Luckily, most final bosses are not designed to be played as by humans and will have some difficult-to-pull-off controller combinations for their moves.

And then there's this asshole.