Gloom

Gloom is another well known Pokemon from the Kanto region. It is a dual Grass/Poison type and the evolved form of Oddish. Gloom is very interesting as the fluid coming out of its mouth isn't drool, but rather, a nectar that it uses to lure enemies closer to it.

During the Kanto journeys, it can evolve into Vileplume only if someone were to use a Leafstone on it, which was the only known evolutionary form within the region. However, in Johto, it is discovered that it can also evolve into a Bellossom with the use of a Sunstone.