When a Pokémon with Weak Armor is hit by a physical move, its Defense drops one stage, but its Speed increases by one stage.
| 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. |
| English | Weak Armor |
|---|---|
| Spanish | Armadura Frágil |
| Italian | Sottilguscio |
| Japanese | くだけるよろい (Kudakeru Yoroi) |
| German | Bruchrüstung |
| French | Armurouillée |