What about Pokémon?: Gloom

Gloom is a Grass/Poison-type Pokémon introduced in Generation I. It is also known as the Weed Pokémon.

This Pokémon's name clearly comes from gloom, due to its expresion, its name seems to show the Pokémon's feelings. A part of it could also come from bloom, referring to how Oddish (its preevolution) was a weed and now it has bloomed. Its Japanese name is Kusaihana (クサイハナ).

This Pokémon repels a putrid aroma from its head when it's frightened. It is also known for being able to absorb noxious gases to transform them to a sweet slime that smells horribly putrid. This slime drips from its mouth. The slime can also be transformed into a perfume, even though its natural usage is that of nectar that brings preys closer, like this it can then eat them. Gloom loves the smell of the honey that drips from its mouth. It has a flower similiar to rafflesia pricei, which is a kind of flower that is parasitic and malodorous.

Gloom can leave a horrible smell behind, which can be smelled from a long distance. It also has the ability to absorb noxious gases, so it can expel them later with a more putrid odor.

Gloom evolves from Oddish at level 21. Gloom evolves to Vileplume when it is exposed to a Leaf Stone. From Generation II onwards, it can also evolve into Bellossom when exposed to a Sun Stone. Oddish, Gloom and Vileplume are Grass/Poison-type Pokémon, however Bellossom is a pure Grass-type.