In order to catch an Onix, you must lower it's HP as low as it can go, preferably to 1%, then use a heavy ball, which you can have Kurt, the old pokeball maker in Azalea town, make. The best Place to easily catch a wild Onix is in the Union cave, but you can also find it in Cliff cave at any time, or you could go to Violet city and trade a Onix for a Bellsprout.
Hope this helps!:)
You have to have an Onix, make it hold metal coat, and trade it. or go too cliff cave i mean buy the Pokemon heart gold soul silver book shesh
Onix is in Pewter City where Brock is.
you cant you have to catch an ONIX give it a metal coat and then trade it or you can get stteelix on Pokemon diamond when you go to canalave city going for the 6th gym badge you first go to iron island and near the exit of iron island you might encounter one
you can either catch a geodude in dark or union cave, or trade a bellsprout for an onix in violet city.
Onix is #95 in the national pokedex, and it is a Rock-Ground type Pokemon.
There is no such thing as a Crystal Onix in the Pokemon games series. It was only in the Pokemon anime.
onix evolves when u trade it with an item called Metalcoat
Onix and Geodude are two I know.
Trade with Metal Coat on it.
Yes, Scizor and Onix. Maybe more.
Sorry, but you cannot catch Crystal Onix in Pokemon Silver. And don't try to go out on eBay or something to get Pokemon Gold because he's not in that game either. Crystal Onix was only in the anime episode: The Crystal Onix. Anyone who says you can get it like on youtube either hacked the games or made their own games, which is copyright.
A trainer in Violet City will trade you a Bellsprout for one. Alternatively, you can catch Steelix in the Cliff Cave on Route 47 at Lv. 23. Breed with a Ditto, or another Steelix, it will hatch into an Onix with no name, unless you name it yourself. Source: I have the Guidebook.
catch it
He has an Omastar, Kabutops, Golem (or Graveler, maybe both), Onix, and in the rematches, he has the above and the following: Rampardos and Relicanth
You can't catch a crystal onix.
in the second town in the game you can trade a man in a house a bellsprout for an onix
Yes, you can. If the Onix is holding a metal coat, it will not prevent you from trading it, and the recipient will receive a Steelix (because Onix being traded with a metal coat will make it evolve into a Steelix).