Champions

A Champion is the player character used in a game. Each player controls one up to a maximum of ten on a map. These Champions come with a variety of abilities and fulfill a variety of roles.

Primary Roles
Most Champions fulfill one of these 5 base roles. There are other more specific roles that are often used as well.

Tank:
The tank takes the damage for the team. They are usually the team member to initiate teamfights and usually have some way of making the opponents life awkward through slows, stuns, snares or taunts.

Support:
The support character is meant to work as back-up in a fight, this can be done in a variety of ways. Some Champions have heals others support in a more offensive way with slows and snares.

AP Carry:
The AP carry is the groups main magic damage dealer. They are usually bursty and target the squishy memebers of the opponents team to take them out the fray quickly.

AD Carry:
The AD carry is the groups main physical damage dealer. They are usually more sustained damage than the AP carry but serve the same purpose to take out the main focus.

Secondary Roles:
These are other Roles a Champion can fill along with thier main role.

Stealther:
Stealthers are a selection of Champions with a stealth ability. This allows them to hide giving them an advantage of surprise while making it incredibly difficult to track thier movement. This often means they are good at getting early surprise kills.

Jungler:
A jungler is a character that does not go to any of the lanes permanently. Instead they start by killing the creeps in the Jungle. This means that they are free to wander about the map giving aid where needed by ganking different lanes.

Bruiser:
A bruiser is a character hardier than those that normally fill their role. For example, Rumble is a AP Bruiser rather than a carry as he has an increased health pool. The advantage of more health is often offset with a disadvantage, in Rumbles case he sacrifices the range advantage usually given to an AP carry.

Roamer:
A roamer is a character that wanders the map in a way similar to the jungler, this often overlaps the stealther role where the character will be laning but occasionally leave to gank one of the other lanes to help give them an advantage.

Facts:
There are currently 92 Champions with one being released on average every 2 weeks.