Rayquaza

Rayquaza is a Dragon, Flying-type Legendary Pokémon from the Hoenn region. It doesn't evolve into nor from any other Pokémon. Along with Kyogre and Groudon, it is a member of Weather Trio.

Trivia

 * Rayquaza was available in Raid Battles from February until March, 2018.
 * Rayquaza was available again from March to March, 2019 during Special Raid Weekend. However, shiny Rayquaza is not released.
 * Rayquaza is available again from July to September, 2019.
 * Rayquaza is available again from July to September, 2019.