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Aromatisse is a small, bipedal, bird-like Pokémon. Its body is purple and is surrounded by a pink fur or feather-like coat, with a black bow on its lower back. Its face resembles a mask used by plague doctors, or a masquerade mask. It has a pair of purple, ox horn-shaped ears with a yellow center. It has eyes with red sclera, black irises, red pupils, and full, black eye lashes. It also has three sharp claws on each small hand.
Aromatisse can give off a variety of different smells, from a pleasant fragrance to an odor so repugnant to its opponent that it can turn a battle in its favor. Aromatisse is the only known Pokémon capable of learning Aromatic Mist.