Onix
#95 in the FireRed and LeafGreen Pokédex • Rock Snake Pokémon
FireRed
It usually lives underground. It searches for food while boring its way through the ground at 50 miles per hour.
LeafGreen
As it grows, the stone portions of its body harden to become similar to black-colored diamonds.
Egg Group
Steps to Hatch
Effort Values Yielded
Gender Ratio
Capture Rate
Base Experience
Onix
#95
No evolutions
FireRed
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Rock Tunnel Rock Tunnel (1F) | Walking in tall grass or a cave | 13 | 4% | - |
Rock Tunnel Rock Tunnel (1F) | Walking in tall grass or a cave | 15 | 1% | - |
Rock Tunnel Rock Tunnel (B1F) | Walking in tall grass or a cave | 13 | 5% | - |
Rock Tunnel Rock Tunnel (B1F) | Walking in tall grass or a cave | 15 | 4% | - |
Rock Tunnel Rock Tunnel (B1F) | Walking in tall grass or a cave | 17 | 1% | - |
Victory Road Victory Road 2 (1F) | Walking in tall grass or a cave | 40 | 10% | - |
Victory Road Victory Road 2 (1F) | Walking in tall grass or a cave | 43 | 10% | - |
Victory Road Victory Road 2 (1F) | Walking in tall grass or a cave | 46 | 10% | - |
Victory Road Victory Road 2 (2F) | Walking in tall grass or a cave | 45 | 10% | - |
Victory Road Victory Road 2 (2F) | Walking in tall grass or a cave | 48 | 10% | - |
Victory Road Victory Road 2 (3F) | Walking in tall grass or a cave | 40 | 10% | - |
Victory Road Victory Road 2 (3F) | Walking in tall grass or a cave | 43 | 10% | - |
Victory Road Victory Road 2 (3F) | Walking in tall grass or a cave | 46 | 10% | - |
Sevault Canyon | Walking in tall grass or a cave | 54 | 5% | - |
LeafGreen
| Location | Method | Level | Chance | Conditions |
|---|---|---|---|---|
Rock Tunnel Rock Tunnel (1F) | Walking in tall grass or a cave | 13 | 4% | - |
Rock Tunnel Rock Tunnel (1F) | Walking in tall grass or a cave | 15 | 1% | - |
Rock Tunnel Rock Tunnel (B1F) | Walking in tall grass or a cave | 13 | 5% | - |
Rock Tunnel Rock Tunnel (B1F) | Walking in tall grass or a cave | 15 | 4% | - |
Rock Tunnel Rock Tunnel (B1F) | Walking in tall grass or a cave | 17 | 1% | - |
Victory Road Victory Road 2 (1F) | Walking in tall grass or a cave | 40 | 10% | - |
Victory Road Victory Road 2 (1F) | Walking in tall grass or a cave | 43 | 10% | - |
Victory Road Victory Road 2 (1F) | Walking in tall grass or a cave | 46 | 10% | - |
Victory Road Victory Road 2 (2F) | Walking in tall grass or a cave | 45 | 10% | - |
Victory Road Victory Road 2 (2F) | Walking in tall grass or a cave | 48 | 10% | - |
Victory Road Victory Road 2 (3F) | Walking in tall grass or a cave | 40 | 10% | - |
Victory Road Victory Road 2 (3F) | Walking in tall grass or a cave | 43 | 10% | - |
Victory Road Victory Road 2 (3F) | Walking in tall grass or a cave | 46 | 10% | - |
Sevault Canyon | Walking in tall grass or a cave | 54 | 5% | - |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Tackle |  |  Physical | 35 | 95 | 35 | A physical attack in which the user charges, full body, into the foe. |
| Start | Screech | |  Status | - | 85 | 40 | An ear-splitting screech is emitted to sharply reduce the foe’s DEFENSE. |
| 8 | Bind | | Physical | 15 | 75 | 20 | A long body or tentacles are used to bind the foe for two to five turns. |
| 12 | Rock Throw |  | Physical | 50 | 90 | 15 | The foe is attacked with a shower of small, easily thrown rocks. |
| 19 | Harden | | Status | - | - | 30 | The user stiffens all the muscles in its body to raise its DEFENSE stat. |
| 23 | Rage | | Physical | 20 | 100 | 20 | An attack that becomes stronger each time the user is hit in battle. |
| 30 | Dragon Breath |  |  Special | 60 | 100 | 20 | The foe is hit with an incredible blast of breath that may also paralyze. |
| 34 | Sandstorm | | Status | - | - | 10 | A 5-turn sandstorm that damages all types except ROCK, GROUND, and STEEL. |
| 41 | Slam | | Physical | 80 | 75 | 20 | The foe is struck with a long tail, vines, etc. |
| 45 | Iron Tail |  | Physical | 100 | 75 | 15 | An attack with a steel-hard tail. It may lower the foe’s DEFENSE stat. |
| 52 | Sand Tomb |  | Physical | 15 | 70 | 15 | The foe is trapped inside a painful sandstorm for two to five turns. |
| 56 | Double-Edge | | Physical | 120 | 100 | 15 | A reckless, life- risking tackle that also hurts the user a little. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Block | | Status | - | - | 5 | The user blocks the foe’s way with arms spread wide to prevent escape. |
| Explosion | | Physical | 250 | 100 | 5 | The user explodes to inflict terrible damage even while fainting itself. |
| Flail | | Physical | - | 100 | 15 | A desperate attack that becomes more powerful the less HP the user has. |
| Rock Slide | | Physical | 75 | 90 | 10 | Large boulders are hurled at the foe. It may make the foe flinch. |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| HM04 | Strength | | Physical | 80 | 100 | 15 | The foe is slugged at maximum power. Can also be used to move boulders. |
| HM06 | Rock Smash |  | Physical | 20 | 100 | 15 | An attack that may also cut DEFENSE. It can also smash cracked boulders. |
| TM05 | Roar | | Status | - | 100 | 20 | The foe is made to switch out with an ally. In the wild, the battle ends. |
| TM06 | Toxic |  | Status | - | 85 | 10 | A move that badly poisons the foe. Its poison damage worsens every turn. |
| TM10 | Hidden Power | | Special | 1 | 100 | 15 | An attack that varies in type and intensity depending on the user. |
| TM11 | Sunny Day |  | Status | - | - | 5 | The sun blazes for five turns, powering up FIRE-type moves. |
| TM12 | Taunt |  | Status | - | 100 | 20 | The foe is taunted into a rage that allows it to use only attack moves. |
| TM17 | Protect | | Status | - | - | 10 | Enables the user to evade all attacks. It may fail if used in succession. |
| TM21 | Frustration | | Physical | - | 100 | 20 | This attack move grows more powerful the less the user likes its TRAINER. |
| TM23 | Iron Tail | | Physical | 100 | 75 | 15 | An attack with a steel-hard tail. It may lower the foe’s DEFENSE stat. |
| TM26 | Earthquake | | Physical | 100 | 100 | 10 | An earthquake that strikes all Pokémon in battle excluding the user. |
| TM27 | Return | | Physical | - | 100 | 20 | This attack move grows more powerful the more the user likes its TRAINER. |
| TM28 | Dig | | Physical | 60 | 100 | 10 | An attack that hits on the 2nd turn. Can also be used to exit dungeons. |
| TM32 | Double Team | | Status | - | - | 15 | The user creates illusory copies of itself to raise its evasiveness. |
| TM37 | Sandstorm | | Status | - | - | 10 | A 5-turn sandstorm that damages all types except ROCK, GROUND, and STEEL. |
| TM39 | Rock Tomb | | Physical | 50 | 80 | 10 | Boulders are hurled at the foe. It also lowers the foe’s SPEED if it hits. |
| TM41 | Torment | | Status | - | 100 | 15 | It enrages the foe, making it incapable of using the same move successively. |
| TM42 | Facade | | Physical | 70 | 100 | 20 | An attack that is boosted if user is burned, poisoned, or paralyzed. |
| TM43 | Secret Power | | Physical | 70 | 100 | 20 | An attack that may have an additional effect that varies with the terrain. |
| TM44 | Rest |  | Status | - | - | 5 | The user sleeps for two turns to fully restore HP and heal any status problem. |
| TM45 | Attract | | Status | - | 100 | 15 | If it is the other gender, the foe is made infatuated and unlikely to attack. |
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Body Slam | | Physical | 85 | 100 | 15 | The user drops its full body on the foe. It may leave the foe paralyzed. |
| Double-Edge | | Physical | 120 | 100 | 15 | A reckless, life- risking tackle that also hurts the user a little. |
| Explosion | | Physical | 250 | 100 | 5 | The user explodes to inflict terrible damage even while fainting itself. |
| Mimic | | Status | - | - | 10 | The user copies the move last used by the foe for the rest of the battle. |
| Rock Slide | | Physical | 75 | 90 | 10 | Large boulders are hurled at the foe. It may make the foe flinch. |
| Substitute | | Status | - | - | 10 | The user creates a decoy using one- quarter of its full HP. |
Rock Head
Prevents recoil damage.
Protects against recoil damage.
Sturdy
Negates 1-hit KO attacks.
Prevents being KOed from full HP, leaving 1 HP instead. Protects against the one-hit KO moves regardless of HP.