Ditto

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

Trivia

 * Ditto is only non-Legendary Pokémon from Kanto region that was not available with release of the game, as it possesses special move - Transform.
 * It appears in form of Pidgey in encounter.
 * It appears in form of Zubat in encounter.
 * 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. Ditto will only reveal itself once it has been successfully captured.
 * Ditto can disguise itself in wild as:
 * Kanto-region Pokémon: Weedle, Paras and Venonat;
 * Johto-region Pokémon: Hoothoot, Ledyba, Spinarak, Hoppip and Remoraid
 * Hoenn-region Pokémon: Seedot, Whismur, Skitty, Gulpin and Numel
 * Sinnoh-region Pokémon: Bidoof
 * Unova-region Pokémon: None
 * Following the conclusion of September 2018 Community Day event, players reported sightings of an undiscovered Pokémon, who was later identified as Meltan, which turned into Ditto once captured.
 * Ditto used to disguise itself in wild as Pidgey, Rattata, Zubat, Mankey, Gastly, Magikarp, Sentret, Yanma, and Zigzagoon, but after the release of their shiny variants, Ditto can no longer be disguised as them anymore.
 * Sinnoh-region Pokémon: Bidoof
 * Unova-region Pokémon: None
 * Following the conclusion of September 2018 Community Day event, players reported sightings of an undiscovered Pokémon, who was later identified as Meltan, which turned into Ditto once captured.
 * Ditto used to disguise itself in wild as Pidgey, Rattata, Zubat, Mankey, Gastly, Magikarp, Sentret, Yanma, and Zigzagoon, but after the release of their shiny variants, Ditto can no longer be disguised as them anymore.