Weak Armor (ability)

Effect

When a Pokémon with Weak Armor is hit by a physical move, its Defense drops one stage, but its Speed increases by one stage.

Stats can be raised to a maximum of +6 stages each, or lowered to a minimum of -6 stages each.

Game descriptions

Black/White Black 2/White 2	Physical attacks lower Defense and raise Speed.
X/Y O.Ruby/A.Sapphire	Physical attacks lower its Defense stat and raise its Speed stat.
Sun/Moon Ultra Sun/Ultra Moon	Physical attacks to the Pokémon lower its Defense stat but sharply raise its Speed stat.
Sword/Shield B.Diamond/S.Pearl	Physical attacks to the Pokémon lower its Defense stat but sharply raise its Speed stat.
Scarlet/Violet	The Pokémon’s Defense stat is lowered when it takes damage from physical moves, but its Speed stat is sharply boosted.

Other languages

English	Weak Armor
Japanese	くだけるよろい (Kudakeru Yoroi)
German	Bruchrüstung
French	Armurouillée
Italian	Sottilguscio
Spanish	Armadura Frágil

Pokémon with Weak Armor

#	Name	2^nd ability	Hidden ability
222	Corsola Galarian Corsola	—	Cursed Body
524	Roggenrola	Sturdy	Sand Force
525	Boldore	Sturdy	Sand Force
569	Garbodor	Stench	Aftermath
854	Sinistea	—	Cursed Body
855	Polteageist	—	Cursed Body
864	Cursola	—	Perish Body

Weak Armor as a hidden ability

#	Name	Other abilities
095	Onix	Rock Head Sturdy
138	Omanyte	Swift Swim Shell Armor
139	Omastar	Swift Swim Shell Armor
140	Kabuto	Swift Swim Battle Armor
141	Kabutops	Swift Swim Battle Armor
218	Slugma	Magma Armor Flame Body
219	Magcargo	Magma Armor Flame Body
227	Skarmory	Keen Eye Sturdy
557	Dwebble	Sturdy Shell Armor
558	Crustle	Sturdy Shell Armor
582	Vanillite	Ice Body Snow Cloak
583	Vanillish	Ice Body Snow Cloak
584	Vanilluxe	Ice Body Snow Warning
629	Vullaby	Big Pecks Overcoat
630	Mandibuzz	Big Pecks Overcoat
936	Armarouge	Flash Fire
937	Ceruledge	Flash Fire