Bug-type moves are strong against three types: Grass, Psychic, and Dark Pokémon.

Quick Scoop 🌿🧠🌙

When you ask “what is bug type strong against,” you’re really asking which Pokémon types take super-effective damage from Bug moves.

  • Bug is super-effective on:
    • Grass
    • Psychic
    • Dark

That means a Bug move like U-turn, X-Scissor, or Lunge will hit these types for 2× damage in the mainline games.

Why those three types?

  • Grass : The classic “bugs eat plants” idea, so Bug shreds pure Grass types and many Grass dual-types (unless their second type resists Bug).
  • Psychic : Thematically, creepy-crawlies “disturb the mind,” so Bug is a natural counter to many powerful Psychic attackers.
  • Dark : Bug is one of the intended checks to Dark, alongside Fighting and Fairy, giving you a nice answer to many Dark sweepers.

Example: A Bug-type move used on an Exeggutor (Grass/Psychic) is 4× effective because both of its types are weak to Bug.

Extra tip: what Bug struggles with

Just so you don’t get caught off guard: Bug-type attacks are resisted by several types (like Fire, Fighting, Flying, Fairy, Steel, Ghost, Poison), so they won’t always feel very strong unless you’re hitting those ideal Grass/Psychic/Dark targets.

TL;DR: If you want your Bug moves to shine, aim them at Grass, Psychic, and Dark Pokémon for maximum value.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.