Ditto

Ditto is a rare Normal-type Pokémon from Kanto region. It does not evolve into any other Pokémon.

Ditto is only non-Legendary Pokémon from Kanto region that was not available with release of the game, as it possesses special move - Transform.

Trivia

 * Ditto was made available to catch in wild on November, 2016, making it the first Pokémon released after the game's public release.
 * Ditto can only transform once per battle. It will retain its first transformation for the duration of the battle.
 * Ditto cannot be seen in the map view, because it disguises itself as few the most common Pokémon. It will only reveal itself once it has been successfully captured.
 * It can disguise itself in wild as:
 * Kanto-region Pokémon: Pidgey, Rattata, Zubat and Magikarp;
 * Johto-region Pokémon: Hoothoot, Sentret and Yanma.
 * Hoenn-region Pokémon: Taillow - it is only known Ditto disguise-Pokémon so far.