Bug-type weakness
Bug-type defenders take ×1.6 from Fire, Flying, Rock — those are the moves you bring when a Bug raid boss or Bug-type gym defender is in front of you. Below is the full chart of what hits Bug hard, what resists Bug, the inverse (where Bug attacks shine and where they fall flat), dual-type matchups for the most common Bug-pair defenders in the game, and the top 5 attackers per super-effective type pulled from the live tier list.
Single-type Bug defenders take ×1.6 from any move of the listed weak-to types. Dual-type Bug defenders stack multiplicatively — a second weakness from their partner type can push the multiplier all the way to ×2.56. Resisted attacks deal only ×0.625, and doubly resisted attacks (a stack of two ×0.625) drop damage to roughly ×0.39 — never bring those into a Bug fight.
Use Bug attackers when the boss in front of you is one of the listed types. Stack STAB (×1.2) on top by picking a Bug-type mons that knows a Bug fast and Bug charged move. The combined multiplier is ×1.92 before weather.
Avoid Bug attackers when the defender is one of the listed types. Resisted damage cuts your DPS by 37.5%; doubly-resisted damage cuts it by 61%. In raids this is the difference between a 3-account clear and a relobby.
Most Bug-type bosses in the game are dual-type. Combined effectiveness multiplies through both types, so a Bug/X defender may be ×2.56 weak to a single attacker type, or fully neutral if the partner type cancels the Bug weakness. Pick the attacker type that maxes the multiplier.
| Dual-type | Examples | Top weakness | Mult |
|---|---|---|---|
| Bug / Flying | Yanmega, Vikavolt, Butterfree | Rock | ×2.56 |
| Bug / Steel | Scizor, Genesect, Forretress | Fire | ×2.56 |
| Bug / Poison | Beedrill, Venomoth | Fire | ×1.60 |
| Bug / Rock | Shuckle, Crustle | Water | ×1.60 |
| Bug / Grass | Parasect, Leavanny | Fire | ×2.56 |
| Bug / Fire | Volcarona, Centiskorch | Rock | ×2.56 |
| Bug / Water | Golisopod | Electric | ×1.60 |
Leagues: Niche raids.
Mega Beedrill, Volcarona, Pheromosa, Genesect — anti-Psychic / Dark / Grass.
Knowing the Bug weakness chart matters as much in PvP as in raids — a Bug lead into one of the listed weak-to types loses the matchup before shields even come into play. Always check the dual-typing of the opposing lead: a single Bug mons is harder to counter than a Bug/Y where Y stacks a second weakness.
›What is Bug-type weak to in the game?
Bug-type defenders take ×1.6 damage from Fire, Flying, Rock attacks. Bring an attacker of one of those types to break a Bug raid boss or gym defender fastest.
›What resists Bug-type attacks?
Bug attacks are resisted by Fire, Fighting, Poison, Flying, Ghost, Steel, Fairy (×0.625 damage). Avoid sending Bug attackers into those defenders.
›What is super-effective against Bug?
Bug attacks deal ×1.6 to Grass, Psychic, Dark. Use Bug attackers to clear those defenders quickly in raids.
›Which Bug-type mons are best in PvP?
Mega Beedrill, Volcarona, Pheromosa, Genesect — anti-Psychic / Dark / Grass. League fit: Niche raids.
›How do dual-type Bug defenders compute damage?
The matrix is multiplicative. If a Bug/Y dual-type has two weaknesses to the attacking type (one from Bug, one from Y), the multiplier stacks to ×2.56 — the maximum without STAB / weather.
The complete attacker-vs-defender chart for every type pairing in the game.
Top S-tier and A-tier attackers grouped by attacker type — full picker for Bug bosses.
Pick an actual current raid boss and get counter recommendations scored by tier × type effectiveness.