you have to go to the dark cave on chapter 4 and you will have to go left twice.
It doesnt
it cant
when you get cut teach it to a pokemon in your party and go back and beat route 2 and professor oak will give you flash the go to rock tunnel with a pokemon that know flash and it should light up and the onix will be gone
In Pokemon Yellow Onix does not evolve, it is a one stage Pokemon.
If you mean,, what onix evolves into,, it's steelix,, but the is no Pokemon that evolves into onix
Unfortunately, you can't get an Onix in Pokemon Emerald. To have your own Onix, you need to trade it from FireRed or LeafGreen. Hope I helped :)
Onix is a Rock/Ground type Pokemon.
Onix is in Pewter City where Brock is.
You can only get an "onix" in Pokemon sapphire if you have a Pokemon version that has an onix then use a linking cable with other GBA to trade it and then you'll have an onix but "onix's" data can't be stored in your pokedex.NOTE:You can only trade with a Pokemon version that have the same region as your Sapphire has;HOENN REGION.
Onix is the beginning Pokémon.
If you mean Onix, nothing evolves into onix
There is no Pokémon that evolves into Onix.