Rock-type weakness
Rock-type defenders take ×1.6 from Water, Grass, Fighting, Ground, Steel — those are the moves you bring when a Rock raid boss or Rock-type gym defender is in front of you. Below is the full chart of what hits Rock hard, what resists Rock, the inverse (where Rock attacks shine and where they fall flat), dual-type matchups for the most common Rock-pair defenders in the game, and the top 5 attackers per super-effective type pulled from the live tier list.
Single-type Rock defenders take ×1.6 from any move of the listed weak-to types. Dual-type Rock 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 Rock fight.
Use Rock attackers when the boss in front of you is one of the listed types. Stack STAB (×1.2) on top by picking a Rock-type mons that knows a Rock fast and Rock charged move. The combined multiplier is ×1.92 before weather.
Avoid Rock 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 Rock-type bosses in the game are dual-type. Combined effectiveness multiplies through both types, so a Rock/X defender may be ×2.56 weak to a single attacker type, or fully neutral if the partner type cancels the Rock weakness. Pick the attacker type that maxes the multiplier.
| Dual-type | Examples | Top weakness | Mult |
|---|---|---|---|
| Rock / Ground | Rhyperior, Golem | Water | ×2.56 |
| Rock / Dark | Tyranitar | Fighting | ×2.56 |
| Rock / Water | Omastar, Kabutops | Grass | ×2.56 |
| Rock / Flying | Aerodactyl, Archeops | Water | ×1.60 |
| Rock / Steel | Aggron, Probopass | Fighting | ×2.56 |
| Rock / Psychic | Lunatone, Solrock | Water | ×1.60 |
| Rock / Fire | Magcargo | Water | ×2.56 |
| Rock / Grass | Cradily | Ice | ×1.60 |
Leagues: Master, raid attackers.
Rhyperior, Tyranitar (Smack Down), Mega Aerodactyl, Rampardos — Rock is the top anti-Fire/Flying DPS pool.
Knowing the Rock weakness chart matters as much in PvP as in raids — a Rock 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 Rock mons is harder to counter than a Rock/Y where Y stacks a second weakness.
›What is Rock-type weak to in the game?
Rock-type defenders take ×1.6 damage from Water, Grass, Fighting, Ground, Steel attacks. Bring an attacker of one of those types to break a Rock raid boss or gym defender fastest.
›What resists Rock-type attacks?
Rock attacks are resisted by Fighting, Ground, Steel (×0.625 damage). Avoid sending Rock attackers into those defenders.
›What is super-effective against Rock?
Rock attacks deal ×1.6 to Fire, Ice, Flying, Bug. Use Rock attackers to clear those defenders quickly in raids.
›Which Rock-type mons are best in PvP?
Rhyperior, Tyranitar (Smack Down), Mega Aerodactyl, Rampardos — Rock is the top anti-Fire/Flying DPS pool. League fit: Master, raid attackers.
›How do dual-type Rock defenders compute damage?
The matrix is multiplicative. If a Rock/Y dual-type has two weaknesses to the attacking type (one from Rock, 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 Rock bosses.
Pick an actual current raid boss and get counter recommendations scored by tier × type effectiveness.