sorry!!!but u cant get mewtwo if u dont beat the elite4

U can't get him before u fight the elite four

Oh, and to everybody looking here: I got a rayquaza on emerald version and my mewtwo in
fire red version, I only used 1 ultra ball on rayquaza and 2 ultra balls on mewtwo. How?
I didn't cheat. I froze them! It's that easy

can get a mewtwo before you beat the elite four but ... you have to trade with somebody
who already has a mewtwo, I got my mewtwo because i walked through that person that
guarding the cave intrance by using a gameshark and putting the walk through walls cheat
so if you have a gameshark use it and put the walk through walls cheat and walk through
that person and voila you got a mewtwo once you get through the whole cave Note:The cave
have high level pokemon so be ready oh yeah, Mewtwo is at lv:70 so bring a very high level
pokemon or just save or clone your master ball.Happy Hunting for mewtwo lv:70 again Mewtwo
LV:70.

u dont