These Champions excel at being junglers. Instead of starting the game in one of the three lanes, they get their gold and experience by killing jungle creeps. This allows for an extra solo lane on their team for quicker leveling and gold gain, giving their team an advantage over a team that does not have a jungler. The junglers are typically excellent at ganking, which they do whenever the other team overextends in a lane, since a champion coming out of a jungle always carries an element of surprise to the opposing team. It is also the job of the jungler to guard or secure the Dragon by either killing it for their team, or preventing the other team from doing so.
Please see Jungling page for more details.
See also Champion attributes.