Pokémon FireRed Tips

How to catch Mewtwo
First, trade a Sableye from Sapphire or Emerald. It can a low level Sableye (I recommend that it be around level 9).Make sure you have at least 99 ultra balls, 99 timer balls, and 99 poke balls. Now go to Cerulean Cave. When you get to Mewtwo, send out your Sableye. Mewtwo can't do anything to him because Mewtwo's attacks are Swift, Psychic, Safeguard, and Recover. Swift is a normal type move and doesn't affect a ghost type. Psychic is a psychic move and can't affect a dark pokemon. Since Sableye is a half ghost half dark pokemon, Mewtwo can't attack him. Recover won't be any help because he won't have much to recover. Mewtwo can use Safeguard, but for how long? Every time he uses a useless attack, throw a Poke Ball. When he gets to the point where he has the struggle, alternate between using ultra balls and timer balls (weaken him a little first) and your bound to catch him. If it doesn't work, e-mail me, I'll help you!