Seviper

Seviper is a Poison-type region-exclusive Pokémon from Hoenn region. It does not evolve into nor from any other Pokémon.

Trivia

 * In the Eastern Hemisphere,
 * Seviper is currently a region-exclusive Pokémon of the Western Hemisphere (including the Americas and Africa).
 * Seviper was originally region-exclusive Pokémon of the Eastern Hemisphere (including Europe, Asia and Australia).
 * Seviper and Zangoose swapped regions on January, 2018.
 * Seviper and Zangoose share status of region-exlusive Pokémon as they are well known for their ongoing feud against each other from other games and media of Pokémon franchise.
 * Seviper is currently a region-exclusive Pokémon of the Western Hemisphere (including the Americas and Africa).
 * Seviper was originally region-exclusive Pokémon of the Eastern Hemisphere (including Europe, Asia and Australia).
 * Seviper and Zangoose swapped regions on January, 2018.
 * Seviper and Zangoose share status of region-exlusive Pokémon as they are well known for their ongoing feud against each other from other games and media of Pokémon franchise.