A Pokémon takes 4× damage from an attack when both of its types are weak to it. In the pokee.si data, 193 of 1,025 species have at least one 4× weakness, and 31 of them have two.
Single-type Pokémon can never have one: the 499 single-type species top out at 2×. For the multiplication behind it, see dual-type weaknesses explained. This page is about the Pokémon themselves.
Who takes 4× damage from each type
The table is sorted by how many Pokémon are hit. Each type pair links to its dual-type page, which lists every Pokémon with that combination. The examples are four of the Pokémon in each group, not a ranking.
Grass and Ice are the most common 4× attacks, with 29 Pokémon each. The Grass pairs are all built from Rock, Ground and Water, which is why Geodude and Onix show up under both Grass and Water. Ice mostly punishes Flying, Dragon and Ground combinations: an Ice Beam does 4× to Dragonite and Garchomp.
At the other end, Ghost and Dark are 4× against only two Pokémon each, Hoopa and Lunala, who share Psychic/Ghost. Electric hits only one pair for 4×, Water/Flying, but that pair includes Gyarados, which takes 4× from a Thunderbolt.
Pokémon with two 4× weaknesses
31 species have two. Seven type pairs produce them, and each pair has the same two weaknesses every time.
| Pokémon | Type | 4× weak to |
|---|---|---|
| Paras | Bug/Grass | Fire and Flying |
| Parasect | Bug/Grass | Fire and Flying |
| Geodude | Rock/Ground | Water and Grass |
| Graveler | Rock/Ground | Water and Grass |
| Golem | Rock/Ground | Water and Grass |
| Onix | Rock/Ground | Water and Grass |
| Rhyhorn | Ground/Rock | Water and Grass |
| Rhydon | Ground/Rock | Water and Grass |
| Magcargo | Fire/Rock | Water and Ground |
| Larvitar | Rock/Ground | Water and Grass |
| Pupitar | Rock/Ground | Water and Grass |
| Aron | Steel/Rock | Fighting and Ground |
| Lairon | Steel/Rock | Fighting and Ground |
| Aggron | Steel/Rock | Fighting and Ground |
| Shieldon | Rock/Steel | Fighting and Ground |
| Bastiodon | Rock/Steel | Fighting and Ground |
| Wormadam | Bug/Grass | Fire and Flying |
| Rhyperior | Ground/Rock | Water and Grass |
| Probopass | Rock/Steel | Fighting and Ground |
| Sewaddle | Bug/Grass | Fire and Flying |
| Swadloon | Bug/Grass | Fire and Flying |
| Leavanny | Bug/Grass | Fire and Flying |
| Amaura | Rock/Ice | Fighting and Steel |
| Aurorus | Rock/Ice | Fighting and Steel |
| Hoopa | Psychic/Ghost | Ghost and Dark |
| Lunala | Psychic/Ghost | Ghost and Dark |
| Stakataka | Rock/Steel | Fighting and Ground |
| Carkol | Rock/Fire | Water and Ground |
| Coalossal | Rock/Fire | Water and Ground |
| Snom | Ice/Bug | Fire and Rock |
| Frosmoth | Ice/Bug | Fire and Rock |
Rock pairings dominate this list: Rock/Ground, Fire/Rock, Rock/Steel and Rock/Ice account for most of the 31. Psychic/Ghost is the odd one out, with Hoopa and Lunala weak to Ghost and Dark.
Well-known Pokémon and their 4× weakness
Twenty familiar Pokémon for reference. "None" in the 4× column means a dual-type Pokémon with no 4× weakness: Kingdra, Mamoswine, Lanturn, Ludicolo, Corviknight, Dragapult and Togekiss are all dual-typed and take at worst 2×.
| Pokémon | Type | 4× | Abilities |
|---|---|---|---|
| Gyarados | Water/Flying | Electric | Intimidate, Moxie (hidden) |
| Charizard | Fire/Flying | Rock | Blaze, Solar Power (hidden) |
| Garchomp | Dragon/Ground | Ice | Sand Veil, Rough Skin (hidden) |
| Dragonite | Dragon/Flying | Ice | Inner Focus, Multiscale (hidden) |
| Salamence | Dragon/Flying | Ice | Intimidate, Moxie (hidden) |
| Swampert | Water/Ground | Grass | Torrent, Damp (hidden) |
| Scizor | Bug/Steel | Fire | Swarm, Technician, Light Metal (hidden) |
| Tyranitar | Rock/Dark | Fighting | Sand Stream, Unnerve (hidden) |
| Gliscor | Ground/Flying | Ice | Hyper Cutter, Sand Veil, Poison Heal (hidden) |
| Kingdra | Water/Dragon | none | Swift Swim, Sniper, Damp (hidden) |
| Ferrothorn | Grass/Steel | Fire | Iron Barbs, Anticipation (hidden) |
| Volcarona | Bug/Fire | Rock | Flame Body, Swarm (hidden) |
| Mamoswine | Ice/Ground | none | Oblivious, Snow Cloak, Thick Fat (hidden) |
| Lanturn | Water/Electric | none | Volt Absorb, Illuminate, Water Absorb (hidden) |
| Ludicolo | Water/Grass | none | Swift Swim, Rain Dish, Own Tempo (hidden) |
| Golem | Rock/Ground | Water, Grass | Rock Head, Sturdy, Sand Veil (hidden) |
| Corviknight | Flying/Steel | none | Pressure, Unnerve, Mirror Armor (hidden) |
| Kingambit | Dark/Steel | Fighting | Defiant, Supreme Overlord, Pressure (hidden) |
| Dragapult | Dragon/Ghost | none | Clear Body, Infiltrator, Cursed Body (hidden) |
| Togekiss | Fairy/Flying | none | Hustle, Serene Grace, Super Luck (hidden) |
When the only weaknesses are 4×
Sixteen species have no 2× weakness at all, only 4× ones: Wooper, Quagsire, Forretress, Scizor, Marshtomp, Swampert, Barboach, Whiscash, Gastrodon, Palpitoad, Seismitoad, Escavalier, Durant, Genesect, Hoopa and Lunala. The Water/Ground Pokémon in that list have one thing to fear, Grass, and Bug/Steel Pokémon like Scizor have Fire. Hoopa and Lunala are the exception, with two 4× weaknesses and nothing else.
How Abilities and Tera change it
Abilities can move the numbers either way. Levitate removes a Ground weakness. Thick Fat halves Fire and Ice damage. Solid Rock and Filter cut super-effective damage by a quarter. Dry Skin goes the other way: Fire moves do 25% more damage to the holder, so a Parasect with Dry Skin takes 5× from Fire.
In Scarlet and Violet, Terastallization can remove a 4× weakness outright, because the Pokémon becomes one type and a single type can't be hit for 4×. The Stellar Tera Type is the exception: a Stellar Pokémon keeps its original types when it is hit. Ability and Tera effects are not in the tables above, which show type matchups only.
Where to look next
The types list has every attacking and defending matchup. Abilities explained covers the Abilities that change them. To check any combination yourself, open the dual-type index, or play Type Clash to practise.