Onix - Generation 3 learnset
Below are all the moves that Onix can learn in Generation 3, which consists of:
- Pokémon Ruby
- Pokémon Sapphire
- Pokémon FireRed
- Pokémon LeafGreen
- Pokémon Emerald
Note: The move categories shown here are based on the move's type, as was the mechanic in Generations 1-3. The moves' detail pages may show a different category for Generation 4+.
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Moves learnt by level up
Onix learns the following moves in Pokémon Ruby/Sapphire at the levels specified.
Lv.MoveTypeCat.PowerAcc.1 Screech Normal 
— 85 1 Tackle Normal 
40 100 9 Bind Normal 15 85 13 Rock Throw Rock 50 90 21 Harden Normal — — 25 Rage Normal 20 100 33 Sandstorm Rock — — 37 Slam Normal 80 75 45 Iron Tail Steel 100 75 49 Sand Tomb Ground 35 85 57 Double-Edge Normal 120 100 Egg moves
Onix learns the following moves via breeding in Pokémon Ruby/Sapphire. Details and compatible parents can be found on the Onix egg moves page.
Moves learnt by HM
Onix is compatible with these Hidden Machines in Pokémon Ruby/Sapphire:
HMMoveTypeCat.PowerAcc.4 Strength Normal 80 100 6 Rock Smash Fighting 40 100 Moves learnt by TM
Onix is compatible with these Technical Machines in Pokémon Ruby/Sapphire:
TMMoveTypeCat.PowerAcc.5 Roar Normal — — 6 Toxic Poison — 90 10 Hidden Power Normal 60 100 11 Sunny Day Fire — — 12 Taunt Dark — 100 17 Protect Normal — — 21 Frustration Normal — 100 23 Iron Tail Steel 100 75 26 Earthquake Ground 100 100 27 Return Normal — 100 28 Dig Ground 80 100 32 Double Team Normal — — 37 Sandstorm Rock — — 39 Rock Tomb Rock 60 95 41 Torment Dark — 100 42 Facade Normal 70 100 43 Secret Power Normal 70 100 44 Rest Psychic — — 45 Attract Normal — 100 -
Moves learnt by level up
Onix learns the following moves in Pokémon FireRed/LeafGreen at the levels specified.
Lv.MoveTypeCat.PowerAcc.1 Screech Normal — 85 1 Tackle Normal 40 100 8 Bind Normal 15 85 12 Rock Throw Rock 50 90 19 Harden Normal — — 23 Rage Normal 20 100 30 Dragon Breath Dragon 
60 100 34 Sandstorm Rock — — 41 Slam Normal 80 75 45 Iron Tail Steel 100 75 52 Sand Tomb Ground 35 85 56 Double-Edge Normal 120 100 Egg moves
Onix learns the following moves via breeding in Pokémon FireRed/LeafGreen. Details and compatible parents can be found on the Onix egg moves page.
MoveTypeCat.PowerAcc.Block Normal — — Explosion Normal 250 100 Flail Normal — 100 Rock Slide Rock 75 90 Move Tutor moves
Onix can be taught these attacks in Pokémon FireRed/LeafGreen from move tutors (details):
MoveTypeCat.PowerAcc.Body Slam Normal 85 100 Double-Edge Normal 120 100 Explosion Normal 250 100 Mimic Normal — — Rock Slide Rock 75 90 Substitute Normal — — Moves learnt by HM
Onix is compatible with these Hidden Machines in Pokémon FireRed/LeafGreen:
HMMoveTypeCat.PowerAcc.4 Strength Normal 80 100 6 Rock Smash Fighting 40 100 Moves learnt by TM
Onix is compatible with these Technical Machines in Pokémon FireRed/LeafGreen:
TMMoveTypeCat.PowerAcc.5 Roar Normal — — 6 Toxic Poison — 90 10 Hidden Power Normal 60 100 11 Sunny Day Fire — — 12 Taunt Dark — 100 17 Protect Normal — — 21 Frustration Normal — 100 23 Iron Tail Steel 100 75 26 Earthquake Ground 100 100 27 Return Normal — 100 28 Dig Ground 80 100 32 Double Team Normal — — 37 Sandstorm Rock — — 39 Rock Tomb Rock 60 95 41 Torment Dark — 100 42 Facade Normal 70 100 43 Secret Power Normal 70 100 44 Rest Psychic — — 45 Attract Normal — 100 -
Moves learnt by level up
Onix learns the following moves in Pokémon Emerald at the levels specified.
Lv.MoveTypeCat.PowerAcc.1 Screech Normal — 85 1 Tackle Normal 40 100 9 Bind Normal 15 85 13 Rock Throw Rock 50 90 21 Harden Normal — — 25 Rage Normal 20 100 33 Sandstorm Rock — — 37 Slam Normal 80 75 45 Iron Tail Steel 100 75 49 Sand Tomb Ground 35 85 57 Double-Edge Normal 120 100 Egg moves
Onix learns the following moves via breeding in Pokémon Emerald. Details and compatible parents can be found on the Onix egg moves page.
MoveTypeCat.PowerAcc.Block Normal — — Explosion Normal 250 100 Flail Normal — 100 Rock Slide Rock 75 90 Move Tutor moves
Onix can be taught these attacks in Pokémon Emerald from move tutors (details):
Moves learnt by HM
Onix is compatible with these Hidden Machines in Pokémon Emerald:
HMMoveTypeCat.PowerAcc.4 Strength Normal 80 100 6 Rock Smash Fighting 40 100 Moves learnt by TM
Onix is compatible with these Technical Machines in Pokémon Emerald:
TMMoveTypeCat.PowerAcc.5 Roar Normal — — 6 Toxic Poison — 90 10 Hidden Power Normal 60 100 11 Sunny Day Fire — — 12 Taunt Dark — 100 17 Protect Normal — — 21 Frustration Normal — 100 23 Iron Tail Steel 100 75 26 Earthquake Ground 100 100 27 Return Normal — 100 28 Dig Ground 80 100 32 Double Team Normal — — 37 Sandstorm Rock — — 39 Rock Tomb Rock 60 95 41 Torment Dark — 100 42 Facade Normal 70 100 43 Secret Power Normal 70 100 44 Rest Psychic — — 45 Attract Normal — 100