A champion in League of Legends is any character that is playable. Riot release new characters on a frequent basis. Champions are sorted into different categories, depending on what their key role is. Roles in League of Legends consist of:
Each character can fall into one or more of these categories, however, additional traits often define a character, such as being:
All of the above categories (first list inclusive) are also known as Champion Attributes. Currently, no champion breaks into more than 4 of these categories. Most champions can assume roles that they are not designed for, however, at a lesser effectiveness than another built for that specific role.