The weaknesses of Drapion are Ground-type Pokémon and Ground-type moves. Drapion is a Poison and Dark-type Pokémon. Ground-type moves are twice as effective against a Poison and Dark-type Pokémon, such as Drapion.
There are four other types of moves that are effective against Drapion, which include Grass, Poison, Ghost and Dark-type moves. However, these four types of moves are only one 50 percent more effective than other moves. Drapion is the Pokémon that evolves from Skorupi and loses its Bug-type status. Do not use Pokémon types that are effective against Bug types because they are not as effective against Drapion.