Appearance
Gyarados is a dragon-like fish with a long blue serpentine body and a yellow underside. It has four fangs, red eyes, a three-pointed crest, white fins, and white or blue barbels.

#130
Atrocious Pokémon
Gyarados is a Water / Flying-type Pokémon, No. 130 in the National Pokédex, introduced in Generation 1 (Kanto region).
« I suspect this Pokémon to be the true identity of a dragon written of in ancient texts, which claimed that it razed an entire village with white-hot beams from its maw. »
Gyarados is a dragon-like fish with a long blue serpentine body and a yellow underside. It has four fangs, red eyes, a three-pointed crest, white fins, and white or blue barbels.
It evolves from Magikarp and lives in fresh or salt water. Feared since ancient times, it rampages for a month. Its fangs crush stone and its scales are harder than steel.
A red Gyarados, caught by Lance, helps stop Groudon and Kyogre, then becomes the first Pokémon in the series to Dynamax.
The name Gyarados may come from gyakusatsu, massacre, and dosu, a piercing sound, or from the monsters Gyaos and Rodan.