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As of X and Y, Gyarados is used by three of the nine Pokémon League Champions, being used by Blue, Lance, and Wallace, making it the most popular Pokémon among Pokémon League Champions thus far (although Blue does not always have a Gyarados, depending on the player's starter Pokémon). However, Blue is the only one to use it in the Pokémon World Tournament.
Gyarados is also a popular Pokémon among Gym Leaders, being used by Blue, Clair, and Crasher Wake.
Gyarados has also been used twice by two Villainous Team Leaders. The first instance was Cyrus and the second instance was Lysandre.
