Moves, #106, Harden
Harden is learned by 82 species by level and 10 by egg
Of the 1,025 species this site covers, default forms only
ClassStatus
PowerNone
AccuracyNone
PP30
Priority0
SinceGen I
TargetUser
Effect, in PokéAPI's words
“Raises the user’s Defense by one stage.”
Who learns it
91 species in all, 8 of 24 games shown
Ultra Sun and Ultra Moon: 65 species| Species | Method | Level |
|---|
 Metapod | Level up | Evolve, 1 |
 Kakuna | Level up | Evolve, 1 |
 Silcoon | Level up | Evolve, 1 |
 Cascoon | Level up | Evolve, 1 |
 Muk | Level up | 1, 4 |
 Onix | Level up | 1 |
 Staryu | Level up | 1 |
 Kabuto | Level up | 1 |
 Kabutops | Level up | 1 |
 Steelix | Level up | 1 |
 Corsola | Level up | 1 |
 Nincada | Level up | 1 |
 Ninjask | Level up | 1 |
 Shedinja | Level up | 1 |
 Aron | Level up | 1 |
 Lairon | Level up | 1 |
 Aggron | Level up | 1 |
 Lunatone | Level up | 1 |
 Solrock | Level up | 1 |
 Crawdaunt | Level up | 1, 5 |
 Baltoy | Level up | 1 |
 Claydol | Level up | 1 |
 Anorith | Level up | 1 |
 Armaldo | Level up | 1 |
 Relicanth | Level up | 1 |
 Gastrodon | Level up | 1, 4 |
 Gliscor | Level up | 1, 7 |
 Boldore | Level up | 1, 4 |
 Gigalith | Level up | 1, 4 |
 Vanillish | Level up | 1, 4 |
 Vanilluxe | Level up | 1, 4 |
 Ferroseed | Level up | 1 |
 Ferrothorn | Level up | 1 |
 Spewpa | Level up | 1 |
 Carbink | Level up | 1 |
 Bergmite | Level up | 1 |
 Avalugg | Level up | 1 |
 Diancie | Level up | 1 |
 Sandygast | Level up | 1 |
 Palossand | Level up | 1 |
 Pyukumuku | Level up | 1 |
 Buzzwole | Level up | 1 |
 Celesteela | Level up | 1 |
 Seedot | Level up | 3 |
 Nuzleaf | Level up | 3 |
 Grimer | Level up | 4 |
 Nosepass | Level up | 4 |
 Shellos | Level up | 4 |
 Roggenrola | Level up | 4 |
 Vanillite | Level up | 4 |
 Corphish | Level up | 5 |
 Gligar | Level up | 7 |
 Qwilfish | Level up | 9 |
 Krabby | Level up | 11 |
 Kingler | Level up | 11 |
 Pinsir | Level up | 11 |
 Slugma | Level up | 13 |
 Magcargo | Level up | 13 |
 Sudowoodo | Egg | |
 Heracross | Egg | |
 Bonsly | Egg | |
 Axew | Egg | |
 Larvesta | Egg | |
 Grubbin | Egg | |
 Wimpod | Egg | |
Sun and Moon: 65 species| Species | Method | Level |
|---|
| Metapod | Level up | Evolve, 1 |
| Kakuna | Level up | Evolve, 1 |
| Silcoon | Level up | Evolve, 1 |
| Cascoon | Level up | Evolve, 1 |
| Muk | Level up | 1, 4 |
| Onix | Level up | 1 |
| Staryu | Level up | 1 |
| Kabuto | Level up | 1 |
| Kabutops | Level up | 1 |
| Steelix | Level up | 1 |
| Corsola | Level up | 1 |
| Nincada | Level up | 1 |
| Ninjask | Level up | 1 |
| Shedinja | Level up | 1 |
| Aron | Level up | 1 |
| Lairon | Level up | 1 |
| Aggron | Level up | 1 |
| Lunatone | Level up | 1 |
| Solrock | Level up | 1 |
| Crawdaunt | Level up | 1, 5 |
| Baltoy | Level up | 1 |
| Claydol | Level up | 1 |
| Anorith | Level up | 1 |
| Armaldo | Level up | 1 |
| Relicanth | Level up | 1 |
| Gastrodon | Level up | 1, 4 |
| Gliscor | Level up | 1, 7 |
| Boldore | Level up | 1, 4 |
| Gigalith | Level up | 1, 4 |
| Vanillish | Level up | 1, 4 |
| Vanilluxe | Level up | 1, 4 |
| Ferroseed | Level up | 1 |
| Ferrothorn | Level up | 1 |
| Spewpa | Level up | 1 |
| Carbink | Level up | 1 |
| Bergmite | Level up | 1 |
| Avalugg | Level up | 1 |
| Diancie | Level up | 1 |
| Sandygast | Level up | 1 |
| Palossand | Level up | 1 |
| Pyukumuku | Level up | 1 |
| Buzzwole | Level up | 1 |
| Celesteela | Level up | 1 |
| Seedot | Level up | 3 |
| Nuzleaf | Level up | 3 |
| Grimer | Level up | 4 |
| Nosepass | Level up | 4 |
| Shellos | Level up | 4 |
| Roggenrola | Level up | 4 |
| Vanillite | Level up | 4 |
| Corphish | Level up | 5 |
| Gligar | Level up | 7 |
| Qwilfish | Level up | 9 |
| Krabby | Level up | 11 |
| Kingler | Level up | 11 |
| Pinsir | Level up | 11 |
| Slugma | Level up | 13 |
| Magcargo | Level up | 13 |
| Sudowoodo | Egg | |
| Heracross | Egg | |
| Bonsly | Egg | |
| Axew | Egg | |
| Larvesta | Egg | |
| Grubbin | Egg | |
| Wimpod | Egg | |
Omega Ruby and Alpha Sapphire: 58 species| Species | Method | Level |
|---|
| Metapod | Level up | 1, 7 |
| Kakuna | Level up | 1, 7 |
| Muk | Level up | 1, 4 |
| Onix | Level up | 1 |
| Staryu | Level up | 1 |
| Kabuto | Level up | 1 |
| Kabutops | Level up | 1 |
| Steelix | Level up | 1 |
| Corsola | Level up | 1 |
| Silcoon | Level up | 1, 7 |
| Cascoon | Level up | 1, 7 |
| Nincada | Level up | 1 |
| Ninjask | Level up | 1 |
| Shedinja | Level up | 1 |
| Aron | Level up | 1 |
| Lairon | Level up | 1 |
| Aggron | Level up | 1 |
| Lunatone | Level up | 1 |
| Solrock | Level up | 1 |
| Crawdaunt | Level up | 1, 5 |
| Baltoy | Level up | 1 |
| Claydol | Level up | 1 |
| Anorith | Level up | 1 |
| Armaldo | Level up | 1 |
| Relicanth | Level up | 1 |
| Gastrodon | Level up | 1, 4 |
| Gliscor | Level up | 1, 7 |
| Boldore | Level up | 1, 4 |
| Gigalith | Level up | 1, 4 |
| Vanillish | Level up | 1, 4 |
| Vanilluxe | Level up | 1, 4 |
| Ferroseed | Level up | 1 |
| Ferrothorn | Level up | 1 |
| Spewpa | Level up | 1 |
| Carbink | Level up | 1 |
| Bergmite | Level up | 1 |
| Avalugg | Level up | 1 |
| Diancie | Level up | 1 |
| Seedot | Level up | 3 |
| Nuzleaf | Level up | 3 |
| Grimer | Level up | 4 |
| Nosepass | Level up | 4 |
| Shellos | Level up | 4 |
| Roggenrola | Level up | 4 |
| Vanillite | Level up | 4 |
| Corphish | Level up | 5 |
| Gligar | Level up | 7 |
| Qwilfish | Level up | 9 |
| Krabby | Level up | 11 |
| Kingler | Level up | 11 |
| Pinsir | Level up | 11 |
| Slugma | Level up | 13 |
| Magcargo | Level up | 13 |
| Sudowoodo | Egg | |
| Heracross | Egg | |
| Bonsly | Egg | |
| Axew | Egg | |
| Larvesta | Egg | |
X and Y: 58 species| Species | Method | Level |
|---|
| Metapod | Level up | 1, 7 |
| Kakuna | Level up | 1, 7 |
| Muk | Level up | 1, 4 |
| Onix | Level up | 1 |
| Staryu | Level up | 1 |
| Kabuto | Level up | 1 |
| Kabutops | Level up | 1 |
| Steelix | Level up | 1 |
| Silcoon | Level up | 1, 7 |
| Cascoon | Level up | 1, 7 |
| Nincada | Level up | 1 |
| Ninjask | Level up | 1 |
| Shedinja | Level up | 1 |
| Aron | Level up | 1 |
| Lairon | Level up | 1 |
| Aggron | Level up | 1 |
| Lunatone | Level up | 1 |
| Solrock | Level up | 1 |
| Crawdaunt | Level up | 1, 7 |
| Baltoy | Level up | 1 |
| Claydol | Level up | 1 |
| Anorith | Level up | 1 |
| Armaldo | Level up | 1 |
| Relicanth | Level up | 1 |
| Gastrodon | Level up | 1, 4 |
| Gliscor | Level up | 1, 7 |
| Boldore | Level up | 1, 4 |
| Gigalith | Level up | 1, 4 |
| Vanillish | Level up | 1, 4 |
| Vanilluxe | Level up | 1, 4 |
| Ferroseed | Level up | 1 |
| Ferrothorn | Level up | 1 |
| Spewpa | Level up | 1 |
| Carbink | Level up | 1 |
| Bergmite | Level up | 1 |
| Avalugg | Level up | 1 |
| Diancie | Level up | 1 |
| Seedot | Level up | 3 |
| Nuzleaf | Level up | 3 |
| Grimer | Level up | 4 |
| Corsola | Level up | 4 |
| Nosepass | Level up | 4 |
| Shellos | Level up | 4 |
| Roggenrola | Level up | 4 |
| Vanillite | Level up | 4 |
| Gligar | Level up | 7 |
| Corphish | Level up | 7 |
| Qwilfish | Level up | 9 |
| Krabby | Level up | 11 |
| Kingler | Level up | 11 |
| Pinsir | Level up | 11 |
| Slugma | Level up | 14 |
| Magcargo | Level up | 14 |
| Sudowoodo | Egg | |
| Heracross | Egg | |
| Bonsly | Egg | |
| Axew | Egg | |
| Larvesta | Egg | |
Nacli
Naclstack
Garganacl
Orthworm
Glimmet
Glimmora
Overqwil
Klawf
Tatsugiri
Shiftry
Charjabug
Vikavolt
Butterfree
Beedrill
Starmie
Beautifly
Dustox
Probopass
Geodude
Graveler
Golem
Stakataka
Meltan
Melmetal
Cursola