Harden (move)

Harden かたくなる Stiffen

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Battles Type  Normal Category  Status PP  30 (max. 48) Power  — Accuracy  —% Priority  {{{priority}}} Does not make contact Not affected by Protect Not affected by Magic Coat Affected by Snatch Not affected by King's Rock

Target Foe Foe Foe Self Ally Ally Affects the user

Availability Introduced  Generation I Not a TM, HM, or move tutor move.

Contests Category  Tough Appeal  2 ♥♥ Jam  0   Can avoid being startled by other once.

Super Contests Category  Tough Appeal  2 ♥♥ Prevents the Voltage from going up in the same turn.

Harden on Legendary Pokémon MoveDex Harden on Eevee's Movedex

Harden (Japanese: かたくなる Stiffen) is a non-damaging Normal-type move introduced in Generation I.

Effect

Harden increases the user's Defense stat by one stage.

Learnset

By leveling up

#	Pokémon		Type		Level
					I		II		III		IV		V
011		Metapod	Bug		Bug	--	7	7			7			7				7
014		Kakuna	Bug	Poison	--	7	7			7			7				7
074		Geodude	Rock	Ground	26			26			no			no
075		Graveler	Rock	Ground	29			27			no			no
076		Golem	Rock	Ground	29			27			no			no
088		Grimer	Poison		Poison	42			5			4			4				4
089		Muk	Poison		Poison	45			5			4			4				4
095		Onix	Rock	Ground	43			23			21	19	--				--
098		Krabby	Water		Water	40			16			16			11				11
099		Kingler	Water		Water	49			16			16	--	11				11
120		Staryu	Water		Water	22			--			--			--				--
121		Starmie	Water	Psychic	--			--			no			no
127		Pinsir	Bug		Bug	43			25			19			13				13
140		Kabuto	Rock	Water	--			--			--			--				--
141		Kabutops	Rock	Water	--			--			--			--				--
143		Snorlax	Normal		Normal	41			41			no			no
207		Gligar	Ground	Flying	no			13			13			9				9
208		Steelix	Steel	Ground	no			23			21	19	--				--
211		Qwilfish	Water	Poison	no			10			10	9	9				9
218		Slugma	Fire		Fire	no			22			22			16				14
219		Magcargo	Fire	Rock	no			22			22			16				14
222		Corsola	Water	Rock	no			7			6			4				4
266		Silcoon	Bug		Bug	no			no			7			7				7
268		Cascoon	Bug		Bug	no			no			7			7				7
273		Seedot	Grass		Grass	no			no			3			3				3
274		Nuzleaf	Grass	Dark	no			no			3			3				3
275		Shiftry	Grass	Dark	no			no			--			no
290		Nincada	Bug	Ground	no			no			--			--				--
291		Ninjask	Bug	Flying	no			no			--			--				--
292		Shedinja	Bug	Ghost	no			no			--			--				--
299		Nosepass	Rock		Rock	no			no			7			7				7
304		Aron	Steel	Rock	no			no			4			4				4
305		Lairon	Steel	Rock	no			no			4			4				4
306		Aggron	Steel	Rock	no			no			4			4				4
337		Lunatone	Rock	Psychic	no			no			--			--				--
338		Solrock	Rock	Psychic	no			no			--			--				--
341		Corphish	Water		Water	no			no			7			7				7
342		Crawdaunt	Water	Dark	no			no			7			7				7
343		Baltoy	Ground	Psychic	no			no			3			3				3
344		Claydol	Ground	Psychic	no			no			3			3				3
347		Anorith	Rock	Bug	no			no			7			--				--
348		Armaldo	Rock	Bug	no			no			7			--				--
369		Relicanth	Water	Rock	no			no			--			--				--
413		Wormadam Sandy Cloak	Bug	Ground	no			no			no			29				29
422		Shellos	Water		Water	no			no			no			4				4
423		Gastrodon	Water	Ground	no			no			no			4				4
472		Gliscor	Ground	Flying	no			no			no			9				9
524		Roggenrola	Rock		Rock	no			no			no			no				4
525		Boldore	Rock		Rock	no			no			no			no				4
526		Gigalith	Rock		Rock	no			no			no			no				4
582		Vanillite	Ice		Ice	no			no			no			no				4
583		Vanillish	Ice		Ice	no			no			no			no				4
584		Vanilluxe	Ice		Ice	no			no			no			no				4
597		Ferroseed	Grass	Steel	no			no			no			no				--
598		Ferrothorn	Grass	Steel	no			no			no			no				--
Bold indicates a Pokémon gains STAB from this move. Italics indicates a Pokémon whose evolution or alternate form receives STAB from this move.

By breeding

#	Pokémon		Type		Father
					I		II		III		IV		V
185		Sudowoodo	Rock		Rock	no			no
214		Heracross	Bug	Fighting
438		Bonsly	Rock		Rock	no			no
610		Axew	Dragon		Dragon	no			no			no
636		Larvesta	Bug	Fire	no			no			no
Bold indicates a Pokémon gains STAB from this move. Italics indicates a Pokémon whose evolution or alternate form receives STAB from this move.

In the anime

Metapod	Kingler	Corphish	Aggron
The user stiffens all the muscles in its body.
Pokémon	Method
User	First Used In		Notes
Metapod	Metapod glows a greenish-whitish color and becomes hard as steel.
Ash's Metapod	Challenge of the Samurai		Debut
Samurai's Metapod	Challenge of the Samurai		None
Bugsy's Metapod	Gettin' the Bugs Out		None
Kingler	Kingler glows pale blue and any attack that hits it bounces off.
Giovanni's Kingler	The Battle of the Badge		None
Krabby	Krabby's body becomes sturdy and hard.
Ash's Krabby	Round One - Begin!		None
Larvitar	Larvitar freezes its body in place like a statue and doesn't move.
Ash's Larvitar	Hatch Me if You Can		Larvitar cannot legally learn Harden
Cascoon	Cascoon tenses up its body and its body shines, making attacks bounce off it.
Jessie's Cascoon	Seeing is Believing!		None
Corphish	Corphish's body flashes white and shines, making it able to take attacks.
Ash's Corphish	Just One of the Geysers		None
Aggron	Aggron tenses up and its body flashes white and shines, making it able to take attacks.
Johnny's Aggron	Shocks and Bonds		None
Snorlax	Snorlax tenses up its body and it flashes bright white for a couple seconds. Snorlax can then take attacks and not get hurt much.
Ash's Snorlax	Wheel of Frontier		Referred incorrectly as Protect

In the manga

The Electric Tale of Pikachu

	Metapod
The user stiffens its body for defense.
Pokémon	Method
User	First Round/Chapter Used In		Notes
Metapod	Metapod stiffens its body, raising its defense slightly.
Ash's Metapod	Play Misty For Me		Debut

Pokémon Adventures

	Snorlax
The user's body hardens and heightens defense.
Pokémon	Method
User	First Round/Chapter Used In		Notes
Snorlax	The curves on Snorlax's body turn into edges and its body becomes stiff.
Red's Snor	A Charizard... and a Champion		Debut
Staryu	Staryu's body hardens, making it able to take attacks.
Crys's multiple Staryu	Surrounded by Staryu		None
Nosepass	Nosepass hardens its body, making it able to take attacks.
Roxanne's Nosepass	VS. Nosepass I		None

In other generations

Generation I	RBY	Generation I (Japanese)	Generation I (International)	Generation II	Generation II (Japanese)	Generation II (International)	Crystal	Generation III	Generation III (Japanese)	Generation III (International)	FRLG	Generation IV	Generation IV (Japanese)	Generation IV (International)	HGSS	Generation V	BW	Generation V (Japanese)	Generation V (International)	Stadium	Stadium 2	Colosseum	XD	Battle Revolution	Battle Revolution (Alternative animation)	Battrio	PMD: Red and Blue	PMD: Time, Darkness, Sky	Rumble	Rumble Blast

Generation I	RBY	Generation I (Japanese)	Generation I (International)	Generation II	Generation II (Japanese)	Generation II (International)	Crystal	Generation III	Generation III (Japanese)	Generation III (International)	FRLG	Generation IV	Generation IV (Japanese)	Generation IV (International)	HGSS	Generation V	BW	Generation V (Japanese)	Generation V (International)	Stadium	Stadium 2	Colosseum	XD	Battle Revolution	Battle Revolution (Alternative animation)	Battrio	PMD: Red and Blue	PMD: Time, Darkness, Sky	Rumble	Rumble Blast

In other languages

Language Title Dutch Verharding Finnish Kovetus French Armure German Härtner Greek Σκλήρυνση Hindi सख्त होजाओ Sakht Hojao Indonesian Mengeras Italian Rafforzatore Korean 단단해지기 Dandanhaejigi Portuguese Endurecimento Serbian Očvršćivanje Spanish Fortaleza

Variations of the move Harden
Harden • Sharpen

This article is part of Project Moves and Abilities, a Bulbapedia project that aims to write comprehensive articles on two related aspects of the Pokémon games.