Gyarados

Gyarados is an extremely-rare Water, Flying-type Pokémon from Kanto region. It evolves from Magikarp after being fed with 400 candies.

Pokédex description
Atrocious Pokémon

''When Magikarp evolves into Gyarados, its brain cells undergo a structural transformation. It is said that this transformation is to blame for this Pokémon's wildly violent nature.''

Possible attacks
Fast attacks Charged attacks

Evolution family
Gyarados is the part of a two-member family.

Trivia

 * On August, 2016, Dragon Breath was removed as a possible fast attack.