Seeker - The seeker is a person who tries to catch the snitch, the snitch is a tennis ball in a sock that is hanging from the back of a person dressed in all yellow. The person who plays the snitch is always fast, so the seeker in turn must be someone who is quick as well. The seekers only job is to try and catch the snitch, they are able to run in and out of the field to follow the snitch who can run in and out of the field also. If the seeker is able to retrieve the ball from the snitch the team gains fifty points and wins the game. There is only one seeker per team.
Keeper - The keeper is normally someone who is very tall and can jump high because their job is to defend the three hoops that are placed on their side of the field. There is only one keeper, and they have to block volleyballs from being thrown into their hoops by the chasers who carry the volleyballs. In Quidditch the volleyball represents the quaffle in the Harry Potter books and there is only one. To put it more simply the keeper is like the goalie in games like hockey, or soccer. The keepers are also able to throw the ball to any chaser on their team after a block.
Beater - Beaters are the players that use brute force, and should be very strong. Their job is throw dodge balls, or also called bludgers in Harry Potter at the chasers who are running around with the volleyball. They want to hit the ball out of the chasers hands or just simply hit them. After a hit the chasers are forced to run back to their goal with their broomsticks above their heads to show that they can't get back into the game until they have reached their goal. The beaters play a key role in keeping the other team from scoring and there are two beaters on each team.
Chaser - There are three chasers on each team and they need to be tough and fast. Their job is the pass the volleyball to each other to get close to the three rings that is the opposing teams goals. The chasers score all the points for each team, but have a difficult time doing it. Running through other chasers that can tackle them as well as try to strip the volleyball from their hands. Along with the chasers on the other team trying to get the volleyball there are the beaters that are throwing dodge balls at them as well. If the chasers can get close enough to the goal, they can throw it into any of the three rings, any rings counts for one point but they have to get it past the keeper.
Snitch - Finally there is the snitch, a quick and muscular player who can maneuver themselves out of almost any situation. The snitch is able to run in and out of the field as they please, but are still chased by the seekers. The snitch is not on either team but on a team of his own. Their only job is to keep running and stay away from the seekers, they keep a tennis ball in a sock on their back and are trained moves to keep seekers at bay and away from the ball. If the snitch loses the ball and a team gets it, that team wins the game.