>Goomy
>Soft Tissue Pokemon
Lives in dark, wet environments so its body wont dry out. Despite being a Dragon-type it's clearly based on a slug.

>Sliggoo
>Soft Tissue Pokemon
Its four horns act as antennae to detect scent and sound. It's eyes devolved. A 'snail's shell' appears to have formed on its back. Still slug-like.

>Goodra
>Suddenly re-classified to Dragon Pokemon
Now a friendly Dragon that hugs people. Has fully developed eyes. The sensitive horns that it used to map its surroundings as a Sliggoo are now weapons. Pro boxers are a unit of force. That 'shell' on its back? Fuck that, it's gone. Did I forget to mention it's a dragon? The Pokedex likes to remind us it is.