What are all the legendaries you can catch in Pokemon Firered and how?

Answer 1

Zapdos-You need the hm surf and a Pokemon who can use it. Go to the entrance of rock tunnel and there should be a patch of grass above it. There is a gap in the fence where there is water. Use surf and feep going until you get to land. Go into the POWER PLANT and find your way through. At the end fight Zapdos (lv 50) and catch it! Try saving before you battle it so if you make it feint turn the game off and then on again.

Articuno-You need a Pokemon who knows surf and a Pokemon who knows strengh. Go to Fuchsia city. Go to the bottom part of the city and head down. Surf across water until you get to land. Go into a cave which is seafoam islands. Find your way through and you will find Articuno! (lv 50) battle it and catch it! Save before battling.

Moltres-Once you defeat the cinnabar island gym a guy called bill will take you to island one.You need a Pokemon who knows surf and strengh. On island one go upwards and you will find a body of water. Use surf until you get to Mt ember. Find your way through it and at the very top you will find Moltres (lv 50.) Battle and catch it! Save before battling.

Mewtwo-After you defeat the elite four and found the ruby and the sapphire go to Curulean city. Head up the bridge and turn left. Go down through a patch of grass and use surf. Then you will find a cave entrance which is Curulean cave. Find your way through it-it's quite hard- and at the end you will find mewtwo (lv 70) Only catch Mewtwo in a ultra ball or a master ball. Save before catching it.

You can get other ledgandaries after you get the national pokedex from Prof. Oak.
you can find the following

zapdos

moltres

articuno

mewtwo

either raikouu, entei or suicune depending on what your starter is.

charizard- suicune

blastiose- raikou

venusaur- entei