From a poison Ivy plant.
Roselia is a Grass and Poison type pokemon.
Koga. He uses Poison type. Use Steel type, for they are not affected by poison. Or use Ground type because they are strong against poison.
Grass and Poison type
poison-bug. weaknesses are fire rock psychic flying.
Ghost, Poison.
Oligarchy
Skorupi is Poison and Bug Type. It evolves into Drapion which is Poison and Dark Type.
Nihilego is a Rock and Poison-type.
Salazzle is a Poison and Fire-type.
Poison/Water
Poison/Water
Poison type Pokemon are weak to psychic and ground type moves.
Poison is strong against grass type Pokémon.
Crobat is a Poison and Flying type pokemon.
Its Poison and Ghost
Roselia is a Grass and Poison type pokemon.
Koga. He uses Poison type. Use Steel type, for they are not affected by poison. Or use Ground type because they are strong against poison.