Onix

RockGroundRock Head, Sturdy, Weak Armor (hidden)

In Hoenn's Last Wish: It is not in any of this guide's encounter tables. Its type (Rock / Ground), base stats (total 385) and abilities are the same as in the official games. 8 of its 18 level-up moves are new compared with Pokémon Emerald, including Smack Down and Rock Polish.

Level-up moves 18

Lv	Move	Type	Cat	Pow	Acc	PP
1	Bind Binds and squeezes the foe for 4 or 5 turns.	Normal	Phys	15	85	20
1	Harden Stiffens the body's muscles to raise Defense.	Normal	Stat	—	—	30
1	Rock Throw Throws small rocks to strike the foe.	Rock	Phys	50	95	15
1	Tackle Charges the foe with a full- body tackle.	Normal	Phys	40	100	35
4	Smack Down Throws a rock to knock the foe down to the ground.	Rock	Phys	50	100	15
8	Rock Polish Polishes the body to sharply raise Speed.	Rock	Stat	—	—	20
12	Dragon Breath Strikes the foe with a blast of breath. May paralyze.	Dragon	Spec	60	100	20
16	Curse A move that functions differently for GHOSTS.	B_UPDATED_MOVE_TYPES >= GEN_5 ? TYPE_GHOST : TYPE_MYSTERY	Stat	—	—	20
20	Rock Slide Large boulders are hurled. May cause flinching.	Rock	Phys	75	100	20
24	Screech Emits a screech to sharply reduce the foe's Defense.	Normal	Stat	—	85	40
28	Sand Tomb Traps and hurts the foe in quicksand for 4 or 5 turns.	Ground	Phys	35	85	15
32	Stealth Rock Sets floating stones that hurt a foe switching in.	Rock	Stat	—	—	20
36	Slam Slams the foe with a long tail, vine, etc.	Normal	Phys	80	95	20
40	Sandstorm Causes a sandstorm that rages for several turns.	Rock	Stat	—	—	20
44	Dig Digs underground the first turn and strikes next turn.	Ground	Phys	80	100	20
48	Iron Tail Attacks with a rock-hard tail. May lower Defense.	Steel	Phys	100	75	15
52	Stone Edge Stabs the foe with stones. High critical-hit ratio.	Rock	Phys	100	80	15
56	Double-Edge A life-risking tackle that also hurts the user.	Normal	Phys	120	100	15

* a legal move, just moved to level-up · ** new to this game

TMs & HMs 21

#	Move · where to get it	Type	Pow
TM05	Roar Route 114 (pick up)	Normal	—
TM06	Toxic Fiery Path (pick up)	Poison	—
TM11	Sunny Day Scorched Slab (pick up)	Fire	—
TM12	Taunt Route 110 — Trick House End (pick up); Route 110 — Trick House Entrance (pick up)	Dark	—
TM17	Protect Lilycove City — Department Store 4F (buy)	Normal	—
TM23	Iron Tail Meteor Falls — 1F Room 1 (pick up)	Steel	100
TM26	Earthquake Seafloor Cavern — Room 9 (pick up)	Ground	100
TM28	Dig Route 114 — Fossil Maniac's House (pick up)	Ground	80
TM32	Double Team Route 113 (hidden)	Normal	—
TM37	Sandstorm Route 111 (pick up)	Rock	—
TM39	Rock Tomb Rustboro City Gym (pick up)	Rock	60
TM41	Torment Slateport City — Battle Tent Lobby (pick up)	Dark	—
TM44	Rest Lilycove City — House 2 (pick up)	Psychic	—
TM45	Attract Verdanturf Town — Battle Tent Lobby (pick up)	Normal	—
TM52	Dragon Pulse No map script in the source places this one, and the creator's documentation sheet does not list it either	Dragon	85
TM55	Rock Slide No map script in the source places this one, and the creator's documentation sheet does not list it either	Rock	75
TM57	Flash Cannon No map script in the source places this one, and the creator's documentation sheet does not list it either	Steel	80
TM68	Sleep Talk Lilycove City — Department Store 4F (buy)	Normal	—
TM76	Dragon Tail Lilycove City — Department Store 4F (buy)	Dragon	60
HM04	Strength Rusturf Tunnel (pick up)	Fighting	80
HM06	Rock Smash Mauville City — House 1 (pick up)	Fighting	40

Where to find Onix

Not found in the wild — evolve or trade for it.

Other changes in this game

Egg moves: Flail, Block, Defense Curl, Rollout, Rock Blast, Rock Climb, Heavy Slam, Stealth Rock, Rototiller, Wide Guard
Evolves into Steelix by trading
Evolves into Steelix with a Metal Coat