Type matchups are integral to the Pokémon series’ battle system, so serious trainers need to carefully consider their partners’ types when building their teams of six. There are some types that are more durable than others, while the most resisted Pokémon types are weak against much of the competition.
In main-series Pokémon battles, if a move’s type is resisted by the type of the Pokémon it’s attacking, its damage is halved. Some Pokémon types also have immunities, which cause certain move types to deal no damage at all; Psychic-type attacks have no effect on Dark-type Pokémon, for example.
The balancing of Pokémon‘s various types has likely never been an easy task for Game Freak. In Red and Blue, Psychic types ran amok because there wasn’t much around to counter them. The Dark and Steel types were added in Pokémon Gold and Silver for the sole purpose of checking Psychic. A similar change happened in Pokémon X and Y, when the Fairy type was introduced to add more counters to Dragon-type Pokémon. Today, the number of resistances and immunities for each Pokémon type isn’t even across the board, as there are some types that are more commonly resisted than others.
The two most resisted Pokémon types are also two of the most common. Bug-type and Grass-type attacks are each resisted by seven types: Bug-type moves are resisted by Fighting, Flying, Poison, Ghost, Steel, Fire, and Fairy Pokémon, while Grass-type moves are resisted by Flying, Poison, Bug, Steel, Fire, Grass, and Dragon. The least resisted Pokémon types are Dragon, which is only resisted by Steel and has no effect on Fairy, and Ghost, which is only resisted by Dark and has no effect on Normal.
Luckily for the Bug- and Grass-type Pokémon of the world, type resistances aren’t everything. Grass is tied with Rock for being super effective against the most other types – five apiece – and has lots of healing utility. It also has some amazing status effect moves that avoid resistances entirely, including Spore, a 100%-accuracy move that puts the target to sleep. Bug is strong against often-powerful Psychic and Dark Pokémon, and it has access to the superb buffing move Quiver Dance, which raises Special Attack, Special Defense, and Speed. Some of the most competitively viable Pokémon in the series have been part Bug or Grass, including Ribombee, Scizor, Amoongus, Ferrothorn, and Mega Venusaur. Pokémon players shouldn’t look down on Bug- or Grass-type Pokémon for the number of resistances they face on the battlefield.