https://www.techradar.com/news/pokemon-go-could-be-getting-a-new-pokemon-shaped-like-a-nut

A brand new Pokémon has made an appearance in Pokémon Go, causing mass confusion among players.

According to Polygon, at the end of a Pokémon Go community event in Japan, a new, never-before-seen Pokémon spawned. The new Pokémon reportedly has a white jelly-like body (a bit like a ditto) and a hexagonal metal nut for a head. However, when the Pokemon was caught its name was simply shown as ???, it had ??? CP, and – to further add to the confusion – it turned into a ditto.