Actually i think your refering to Fire Red or Leaf Green, you can catch onix though the cave to celadon i believe it's Mt. Moon idk i haven't played in a while or Victory Road and i don't think you can catch Marowak but when you battle your Rival in Lavender Town in the Tower of the Dead Pokemon they say they just caught a Cubone, just look for one raise it and evolve it. Hope i helped.
no emerald is a different version... you get onix in victory road, same with marowak.
catch a wailmer with a super rod then level it to 40
you can't i think its only in emerald
You can find an onix in the oreburgh mine and the iron island in diamond,pearl and platinum.You can get it in the rock tunnel in fire re and leaf green. You dont find onix in ruby,sapphire and emerald.
you cant unless you migrate from emerald or trade for it
yes it evolves into Marowak
Onix is uncatchable in emerald you must get one from firered or leafgreen.
you can only get it by trading from rife red. :)
Onix isn't available in Emerald but could be traded from LeafGreen or FireRed, where it is very common in Victory Road, Rock Tunnel, and Sevault Canyon.
You can't. Fire Red and Leaf Green only, unless you use a cheat device. Sorry.
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 :)
You catch Onix in Orbeghuh Mines or on Iron Island
Find the crystal onix, make it weak and catch it with your best ball
catch one.
The only way to get Onix on Pokemon Emerald is to trade from Fire Red or Leaf Green.Onix is usually in Mt.Moon or the Victory Road.
You must trade from FireRed or LeafGreen
Onix Machop Geodude Zubat Sandslash Golbat Machoke Marowak
Has weakness cause you have maroval machoke and onix you should have only marowak. Then get electric Pokemon like raichu or Dragonite with electric attacks. Then get tyranitar with Crunch