Go to four island and go right theres some water use Surf and go north theres a cave this is icefall cave in here there is an HM which is waterfall find it then teach it to a Pokemon then go up the waterfall that's in the cave go to the ladder and you will find some rockets beat them and your done.
she's on 4 island in the cave to your right when you enter 4 island.
you have to have beaten the elite four and you have to find the ruby and sapphire for the machine in the Pokemon center on one island. then you can enter cerulean cave and get mewtwo
You can't. Sealeo can only be attained by raising a Spheal to Lv. 32.
Go to four island and go in icefall cave find HM7 then use it to go up the waterfall go to the ladder then defeat the rocket talk to lorelei then leave and go to six island go back to the cave and the guy will not be there use Cut to open the door.
hmm, it depends on what cave you're asking about; snorlax blocks a cave in an earlier version, but since you asked in FireRed, I assume you mean cerulean cave. In that case, you just need to beat the elite four and then it'll be open for you.
Four Island
It is in Four island
In icefall cave.
It's in the Icefall Cave on Four Island.
its located on four island in the cave
In Icefall Cave, in Four Island
Four Island, Icefall Cave.
It is in Island four.
In icefall cave at four island.
In Icefall Cave, in Four Island
you have to beat the elite four. and, you have to rescue Lorelei on four island. And inside the cave lies... MEWTWO!
You can find it at Icefall Cave at Four Island.