Seviper

Seviper is a rare Poison-type region-exclusive Pokémon from Hoenn region.

Pokédex description
Fang Snake Pokémon

''Seviper shares a generations-long feud with Zangoose. The scars on its body are evidence of vicious battles. This Pokémon attacks using its sword-edged tail.''

Evolution family
Seviper is the part of a single-member family.

Trivia

 * Seviper is currently a region-exclusive Pokémon in the Americas and Africa.
 * Seviper was originally released in Europe, Asia and Australia.
 * Seviper and Zangoose swapped regions on January 5, 2018.
 * Seviper is well known for its ongoing feud against Zangoose in previous Pokémon games and media.
 * It's reflected in Pokémon GO with that the Zangoose and Serviper are both region-exclusive for two different hemispheres.