Goomy

In Astra, Goomy has a Poison/Dark-type regional form. It evolves into Astrian Sliggoo starting at level 40, which evolves into Astrian Goodra starting at level 50 during rain.

Astra once produced a great amount of pollution, and this Pokémon was the result. Efforts have been made to restore Goomy's original form, but collectors value this incarnation.