Aromatisse

Aromatisse's body appears to be based on a fluffy cosmetics applicator (such as a powder puff) and a perfume bottle, with a plague doctor's mask. It also takes traits from the appearance of flamenco and can-can dancers.

Plague doctors used various perfumes held in birdlike masks to drown out the scent of the plagued and deceased. Plague doctor masks are often worn as costumes at masquerade balls and carnivals.

The fact that it evolves from its birdlike pre-evolved form to its human-like appearance is possibly a reference to Gunnhild, a mythological Norwegian queen that shapeshifts into a bird.

Name origin
Aromatisse may be a combination derived from aroma, aromatic, and aromatize.

Frefuwan may be a combination of fragrance or fresh and フワフワ fuwafuwa (light, airy, fluffy).