Onix
Gold

It twists and squirms through the ground. The thunderous roar of its tunneling echoes a long way.

Silver

It rapidly bores through the ground at 50 mph by squirming and twisting its mas­ sive, rugged body.

Crystal

As it digs through the ground, it absorbs many hard objects. This is what makes its body so solid.

Evolution Chain

onix
Onix
🔄
Trade
holding metal coat
steelix
Steelix

Pokédex Data

Classification Rock Snake Pokémon
Height 8.8 m (28'10")
Weight 210.0 kg (463.0 lbs)
Abilities N/A in Gen II

Held Items

None in this generation.

Game Locations

  • Kanto Victory Road 1 1f
  • Kanto Victory Road 1 2f
  • Kanto Victory Road 1 3f
  • Mt Silver 1f
  • Mt Silver Top
  • Rock Tunnel B1f
  • Union Cave 1f
  • Union Cave B1f
  • Union Cave B2f

Training

EV Yield +1 defense
Catch Rate 45
Base Friendship 70
Growth Rate medium
Gender Ratio
Egg Groups Mineral

Learned Moves

Level Up Moves

Gold/Silver
Lvl Name Class Power Acc. PP Effect
1 Tackle
40 100% 35 Inflicts regular damage with no additional effect.
1 Screech
85% 40 Lowers the target's Defense by two stages.
10 Bind
15 85% 20 Prevents the target from fleeing and inflicts damage for 2-5 turns.
14 Rock Throw
50 90% 15 Inflicts regular damage with no additional effect.
23 Harden
30 Raises the user's Defense by one stage.
27 Rage
20 100% 20 If the user is hit after using this move, its Attack rises by one stage.
36 Sandstorm
10 Changes the weather to a sandstorm for five turns.
40 Slam
80 75% 20 Inflicts regular damage with no additional effect.
Crystal
Lvl Name Class Power Acc. PP Effect
1 Tackle
40 100% 35 Inflicts regular damage with no additional effect.
1 Screech
85% 40 Lowers the target's Defense by two stages.
10 Bind
15 85% 20 Prevents the target from fleeing and inflicts damage for 2-5 turns.
14 Rock Throw
50 90% 15 Inflicts regular damage with no additional effect.
23 Harden
30 Raises the user's Defense by one stage.
27 Rage
20 100% 20 If the user is hit after using this move, its Attack rises by one stage.
36 Sandstorm
10 Changes the weather to a sandstorm for five turns.
40 Slam
80 75% 20 Inflicts regular damage with no additional effect.

TM/HM Moves

Gold/SilverCrystal
Name Class Power Acc. PP Effect
HM04 Strength
80 100% 15 Inflicts regular damage with no additional effect.
TM02 Headbutt
70 100% 15 Has a 30% chance to make the target flinch.
TM03 Curse
10 Ghosts pay half their max HP to hurt the target every turn. Others decrease Speed but raise Attack and Defense.
TM05 Roar
20 Immediately ends wild battles. Forces trainers to switch Pokémon.
TM06 Toxic
90% 10 Badly poisons the target, inflicting more damage every turn.
TM08 Rock Smash
40 100% 15 Has a 50% chance to lower the target's Defense by one stage.
TM10 Hidden Power
60 100% 15 Power and type depend upon user's IVs. Power can range from 30 to 70.
TM11 Sunny Day
5 Changes the weather to sunny for five turns.
TM13 Snore
50 100% 15 Has a 30% chance to make the target flinch. Only works if the user is sleeping.
TM17 Protect
10 Prevents any moves from hitting the user this turn.
TM20 Endure
10 Prevents the user's HP from lowering below 1 this turn.
TM21 Frustration
100% 20 Power increases as happiness decreases, up to a maximum of 102.
TM23 Iron Tail
100 75% 15 Has a 30% chance to lower the target's Defense by one stage.
TM26 Earthquake
100 100% 10 Inflicts regular damage and can hit Dig users.
TM27 Return
100% 20 Power increases with happiness, up to a maximum of 102.
TM28 Dig
80 100% 10 User digs underground, dodging all attacks, and hits next turn.
TM31 Mud Slap
20 100% 10 Has a 100% chance to lower the target's accuracy by one stage.
TM32 Double Team
15 Raises the user's evasion by one stage.
TM34 Swagger
85% 15 Raises the target's Attack by two stages and confuses the target.
TM35 Sleep Talk
10 Randomly uses one of the user's other three moves. Only works if the user is sleeping.
TM37 Sandstorm
10 Changes the weather to a sandstorm for five turns.
TM44 Rest
5 User sleeps for two turns, completely healing itself.
TM45 Attract
100% 15 Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user.

Egg Moves

Gold/SilverCrystal
Name Class Power Acc. PP Effect
Flail
100% 15 Inflicts more damage when the user has less HP remaining, with a maximum of 200 power.
Rock Slide
75 90% 10 Has a 30% chance to make the target flinch.

Base Stats

Hp 35
Attack 45
Defense 160
Sp. Atk 30
Sp. Def 45
Speed 70
Total 385

Type Defenses

(vs. Gen 6+ rules)

0.5x
0.5x
4x
4x
0x
2x
2x
0.25x
2x
0.5x
0.5x
2x