Bug
Bug type: weaknesses, resistances and Pokémon
Bug Pokémon take double damage from Fire, Flying and Rock moves and resist Grass, Fighting and Ground moves.
The balance is even: 3 weaknesses and 3 resistances or immunities.
Bug moves are super effective against Grass, Psychic and Dark and not very effective against Fire, Fighting, Poison, Flying, Ghost, Steel and Fairy.
To beat these Pokémon, your best pick is Fire, Flying and Rock moves. Avoid Grass, Fighting and Ground moves, which deal little or no damage.
There are 23 Pokémon with this combination, such as Caterpie, Metapod, Pinsir and Pineco.
Pokémon with Bug as one of their types: 92