Onix
Red/Blue

As it grows, the stone portions of its body harden to become similar to a diamond, but colored black.

Yellow

Burrows at high speed in search of food. The tunnels it leaves are used as homes by DIGLETTs.

Pokédex Data

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

Held Items

None in this generation.

Game Locations

  • Kanto Victory Road 2 1f
  • Kanto Victory Road 2 2f
  • Kanto Victory Road 2 3f
  • Rock Tunnel B1f
  • Rock Tunnel B2f

Training

EV Yield +1 defense
Catch Rate 45
Base Friendship 70
Growth Rate medium

Learned Moves

Level Up Moves

Red/Blue
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.
15 Bind
15 85% 20 Prevents the target from fleeing and inflicts damage for 2-5 turns.
19 Rock Throw
50 90% 15 Inflicts regular damage with no additional effect.
25 Rage
20 100% 20 If the user is hit after using this move, its Attack rises by one stage.
33 Slam
80 75% 20 Inflicts regular damage with no additional effect.
43 Harden
30 Raises the user's Defense by one stage.
Yellow
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.
15 Bind
15 85% 20 Prevents the target from fleeing and inflicts damage for 2-5 turns.
19 Rock Throw
50 90% 15 Inflicts regular damage with no additional effect.
25 Rage
20 100% 20 If the user is hit after using this move, its Attack rises by one stage.
33 Slam
80 75% 20 Inflicts regular damage with no additional effect.
43 Harden
30 Raises the user's Defense by one stage.

TM/HM Moves

Red/BlueYellow
Name Class Power Acc. PP Effect
HM04 Strength
80 100% 15 Inflicts regular damage with no additional effect.
TM06 Toxic
90% 10 Badly poisons the target, inflicting more damage every turn.
TM08 Body Slam
85 100% 15 Has a 30% chance to paralyze the target.
TM09 Take Down
90 85% 20 User receives 1/4 the damage it inflicts in recoil.
TM10 Double Edge
120 100% 15 User receives 1/3 the damage inflicted in recoil.
TM20 Rage
20 100% 20 If the user is hit after using this move, its Attack rises by one stage.
TM26 Earthquake
100 100% 10 Inflicts regular damage and can hit Dig users.
TM27 Fissure
30% 5 Causes a one-hit KO.
TM28 Dig
80 100% 10 User digs underground, dodging all attacks, and hits next turn.
TM31 Mimic
10 Copies the target's last used move.
TM32 Double Team
15 Raises the user's evasion by one stage.
TM34 Bide
10 User waits for two turns, then hits back for twice the damage it took.
TM36 Self Destruct
200 100% 5 User faints.
TM40 Skull Bash
130 100% 10 Raises the user's Defense by one stage. User charges for one turn before attacking.
TM44 Rest
5 User sleeps for two turns, completely healing itself.
TM47 Explosion
250 100% 5 User faints.
TM48 Rock Slide
75 90% 10 Has a 30% chance to make the target flinch.
TM50 Substitute
10 Transfers 1/4 of the user's max HP into a doll, protecting the user from further damage or status changes until it breaks.

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