Well its possible but you need to understand how to code and hack Pokemon games. Which is extremely hard...
i think the only way is trade from Pokemon red, blue or yellow
You cant. You will have to get fire red or leaf green if you want to trade kanto pokemon.
the only way to get mewtwo is to trade it from Pokemon red,blue,or yellow. in leaf green and fire red he is in cerulean cave cheat codesxD
no
you trade them over from Pokemon red, blue or yellow.
You can't catch it on Pokemon Fire Red. You have to trade it from Leaf Green.
Trade it from Pokemon Fire red
you trade it from Pokemon red/blue or yellow
Trade Trade from Leaf Green or Fire Red you have to trade it from fire red to sapphire to ruby to emerald!
trade from fire red or leaf green trade from fire red or leaf green
Blue or Yellow
No you cannot sadly.