Arbok

Arbok is a Poison-type Pokémon from Kanto region. It can evolve from Ekans when fed with 50 candies.

Pokédex description
Cobra Pokémon

''This Pokémon is terrifically strong in order to constrict things with its body. It can even flatten steel oil drums. Once Arbok wraps its body around its foe, escaping its crunching embrace is impossible.''

Evolution family
Arbok is the part of a three-member family.

Trivia

 * Arbok name comes from word Kobra spelled backwards, that sounds similar to Cobra.