Sliggoo

Sliggoo is a Dragon-type Pokémon introduced in the sixth generation. It evolves from Goomy at level 40. At level 50, it can evolve into Goodra during rain in the overworld. Rain caused by Rain Dance, Drizzle or Primordial Sea will not trigger the evolution.

Origin
Sliggoo is based off soft-bodied gastropods like slugs. Its snail origins and its typing and body shape may be based off the mythical serpent/ mollusk from French folklore, Lou Carcolh.

Its name is a combination of slick or slippery or slimy or slug and goo.