Gyarados

Gyarados (ギャラドス Gyarados) is a /-type Pokémon, and is the evolved form of Magikarp. Magikarp can evolve into a Gyarados starting at level 20. A Shiny Gyarados appeared in the episode "Talkin` bout an Evolution". Shiny Gyarados are red and are the most well known Shiny Pokémon.

Appearance
Gyarados is an Atrocious Pokémon. It is serpentine in shape and is covered in blue or white scales. It has white fins on top of its body and it has a tan underbelly. It has fins on the side of its face and a large blue crest on its forehead. It, like Magikarp, has "whiskers."

Gender differences
The females have light whiskers.

Special Abilities
Gyarados have the ability Intimidate, which decreases the opponent's Attack by one level when Gyarados is sent out into the battle. Gyarados are known to be extremely violent, destroying anything when in a rampage.

In the Anime
James's Magikarp, which he bought from a dealer, evolves into a Gyarados, wrecking the ship, S.S. Anne, in Vermillion City.

A Red Gyarados is found in the Lake of Rage, north of Mahogany Town, in Johto. It is owned by the Elite Four, Lance.

Lance once use the Red Gyarados to save Brock, May and Max from drowning while he is disguising as a Team Magma grunt.

Origins
Gyarados appears to based off a sea dragon or a sea serpent from china.

Trivia

 * Despite its dragon-like appearance, it isn't -type, yet it learns Dragon Type moves such as Dragon Rage and Dragonbreath and is used by many Dragon Trainers such as Lance and Clair.
 * Despite it being a -type, it can only know one Flying-type move, Bounce.
 * Despite it being seen flying in the anime, it cannot learn the move, Fly.
 * Gyarados may be based off of the mythological creature, the Krakon, since it's original name was going to be Skullkrakon.