You can not obtain a Crystal Onix in the Pokemon games. It is only featured in the TV show Pokemon
Chat with our AI personalities
You can get Misdreavus in the Silver Cave at night time in Pokémon Crystal.
Pokemon Crystal is a Generation II (Gold, Silver, Crystal) game. Absol is a Generation III (Ruby, Sapphire, Emerald, Fire Red, Leaf Green) Pokemon. You cannot get Absol in Crystal. However, you can get Absol in Heart Gold, Soul Silver at: Slowpoke Well, Union Cave, Mt. Mortar, Dark Cave, Whirl Islands, Mt. Silver, Ice Path, Cliff Edge Gate, Cliff Cave, Diglett's Cave, Mt. Moon, Cerulean Cave, Rock Tunnel, Seafoam Islands, Victory Road, Tohjo Falls. But you have to be listening to the Hoenn Sound on your radio.
It will appear in Mt. Silver cave.
You walk around in the Ice cave that is before Blackthorne City, they're just rare, don't get discouraged if you don't run into one right away -------------------------------------------------------------------------------------------------------- FALSE In Pokemon Gold, you get a snealsel during night time of route 28 (outside of Silver Cave) or inside Silver Cave. The answer above is how you get a sneasel in crystal
You can't get into cerullean cave(the cave with mewtwo in it) on Pokemon silver because according to the game's story, the cave has caved in, but there may still be some remmants of the cave you could get to via a gameshark.