Kecleon

Kecleon is a Normal-type Pokémon from the Hoenn region. It does not evolve into or from any other Pokémon.

Availability

 * Kecleon appears on top of PokéStops, being slightly transparent. Trainers cannot spin the PokéStop Kecleon is attached to; spinning will instead display a pop-up about an "invisible obstacle." Tapping on Kecleon a few times will cause it to detach from the PokéStop, allowing the Trainer to spin the PokéStop again, and for Kecleon to spawn on the map next to the PokéStop.
 * Kecleon appears on top of PokéStops, being slightly transparent. Trainers cannot spin the PokéStop Kecleon is attached to; spinning will instead display a pop-up about an "invisible obstacle." Tapping on Kecleon a few times will cause it to detach from the PokéStop, allowing the Trainer to spin the PokéStop again, and for Kecleon to spawn on the map next to the PokéStop.

Trivia

 * After Chikorita Community Day on September 2018, Ditto appeared in abundance disguising itself as Kecleon for players in Singapore  . Its name was replaced with "? ? ? ? ? ?" and CP was replaced with "???".
 * For players in other parts of the world, Ditto disguised itself as Meltan under the same conditions as Kecleon.
 * Kecleon is the last Pokémon from the Hoenn region to make its debut in Pokémon GO.