Pokemon #704 in the National PokéDex, a Dragon-type Pokémon.
It evolves into Sliggoo starting at level 40, which evolves into Goodra starting at level 50 when leveled up during rain in the overworld.
Goomy looks like a light purple, vaguely slug-like pile of goo.
Japanese Name: Numera
Prior Pokémon: Carbink
Next Pokémon: Sliggoo