Onix

#95 in the National Pokédex • Rock Snake Pokémon

Normal

Shiny

Pokédex entries

Pokémon Emerald

There is a magnet in its brain that prevents an ONIX from losing direction while tunneling. As it grows older, its body becomes steadily rounder and smoother.

Details

Types

Weak to

4×

4×

2×

2×

2×

Resists

0.25×

0.5×

0.5×

0.5×

Immune to

0×

Growth

EV yield, catch rate, and experience details for this Pokémon.

EV yield	1 Def
Catch rate	45
Base Exp.	108

Eggs

Egg groups, gender ratio, and hatching details for this Pokémon.

Egg groups	Mineral
Gender	50% male 50% female
Egg cycles	25 (elapsed hatch time varies; Flame Body or Magma Armor speeds hatching in Emerald)

Evolution

Evolution requirements shown in a compact table or chain view.

Pokémon	Requires	Evolution
Onix #95	Trade holding Metal Coat	Steelix #208

Moves

Moves this Pokémon learns naturally by reaching specific levels.

		Class				Description
Start	Tackle	Physical	35	95	35	Charges the foe with a full-body tackle.
Start	Screech	Status	-	85	40	Emits a screech to sharply reduce the foe’s DEFENSE.
9	Bind	Physical	15	75	20	Binds and squeezes the foe for 2 to 5 turns.
13	Rock Throw	Physical	50	90	15	Throws small rocks to strike the foe.
21	Harden	Status	-	-	30	Stiffens the body’s muscles to raise DEFENSE.
25	Rage	Physical	20	100	20	Raises the user’s ATTACK every time it is hit.
33	Sandstorm	Status	-	-	10	Causes a sandstorm that rages for several turns.
37	Slam	Physical	80	75	20	Slams the foe with a long tail, vine, etc.
45	Iron Tail	Physical	100	75	15	Attacks with a rock-hard tail. May lower DEFENSE.
49	Sand Tomb	Physical	15	70	15	Traps and hurts the foe in quicksand for 2 to 5 turns.
57	Double-Edge	Physical	120	100	15	A life-risking tackle that also hurts the user.

Machines

Moves this Pokémon can learn from Technical Machines and Hidden Machines in Pokémon Emerald.

			Class				Description
TM05	Roar		Status	-	100	20	Makes the foe flee to end the battle.
TM06	Toxic		Status	-	85	10	Poisons the foe with an intensifying toxin.
TM10	Hidden Power	Type varies	Varies By Type	30–70	100	15	The effectiveness varies with the user.
TM11	Sunny Day		Status	-	-	5	Boosts the power of FIRE-type moves for 5 turns.
TM12	Taunt		Status	-	100	20	Taunts the foe into only using attack moves.
TM17	Protect		Status	-	-	10	Evades attack, but may fail if used in succession.
TM21	Frustration		Physical	-	100	20	An attack that is stronger if the TRAINER is disliked.
TM23	Iron Tail		Physical	100	75	15	Attacks with a rock-hard tail. May lower DEFENSE.
TM26	Earthquake		Physical	100	100	10	A powerful quake, but has no effect on flying foes.
TM27	Return		Physical	-	100	20	An attack that increases in power with friendship.
TM28	Dig		Physical	60	100	10	Digs underground the first turn and strikes next turn.
TM32	Double Team		Status	-	-	15	Creates illusory copies to raise evasiveness.
TM37	Sandstorm		Status	-	-	10	Causes a sandstorm that rages for several turns.
TM39	Rock Tomb		Physical	50	80	10	Stops the foe from moving with rocks and cuts SPEED.
TM41	Torment		Status	-	100	15	Torments the foe and stops successive use of a move.
TM42	Facade		Physical	70	100	20	Boosts ATTACK when burned, paralyzed, or poisoned.
TM43	Secret Power		Physical	70	100	20	An attack with effects that vary by location.
TM44	Rest		Status	-	-	10	The user sleeps for 2 turns, restoring HP and status.
TM45	Attract		Status	-	100	15	Makes the opposite gender less likely to attack.
HM04	Strength		Physical	80	100	15	Builds enormous power, then slams the foe.
HM06	Rock Smash		Physical	20	100	15	A rock-crushing attack that may lower DEFENSE.

Tutors

Moves this Pokémon can learn from move tutors in this game.

	Class				Description
Body Slam	Physical	85	100	15	A full-body slam that may cause paralysis.
Double-Edge	Physical	120	100	15	A life-risking tackle that also hurts the user.
Endure	Status	-	-	10	Endures any attack for 1 turn, leaving at least 1HP.
Explosion	Physical	250	100	5	Inflicts severe damage but makes the user faint.
Mimic	Status	-	-	10	Copies a move used by the foe during one battle.
Mud-Slap	Physical	20	100	10	Hurls mud in the foe’s face to reduce its accuracy.
Psych Up	Status	-	-	10	Copies the foe’s effect(s) and gives to the user.
Rock Slide	Physical	75	90	10	Large boulders are hurled. May cause flinching.
Sleep Talk	Status	-	-	10	Uses an available move randomly while asleep.
Snore	Physical	40	100	15	A loud attack that can be used only while asleep.
Substitute	Status	-	-	10	Creates a decoy using 1/4 of the user’s maximum HP.
Swagger	Status	-	90	15	Confuses the foe, but also sharply raises ATTACK.

Breeding

Moves this Pokémon can inherit through breeding or similar methods.

	Class				Description
Block	Status	-	-	5	Blocks the foe’s way to prevent escape.
Explosion	Physical	250	100	5	Inflicts severe damage but makes the user faint.
Flail	Physical	-	100	15	Inflicts more damage when the user’s HP is down.
Rock Slide	Physical	75	90	10	Large boulders are hurled. May cause flinching.

Traits

Ability options available to this Pokémon in this game.

Rock Head

Prevents recoil damage.

Protects against recoil damage.

Sturdy

Negates 1-hit KO attacks.

Protects against the one-hit KO moves regardless of HP.

#94

Gengar

#208

Steelix

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