Nobody, who told you that big lie.?
Nobody gives you Mewtwo in Emerald, in fact, Mewtwo is not even in Pokemon Emerald!!!
A team aqua grunt gives it to you in the slateport museum after you defeat them all.
well after delivering the letter to steven who's in granite cave you go back to mr stone and tell him. he gives you a pokenav. you then sail to slateport and talk to him there.
the presedent of the devin corpration gives a pokenav to us when we save the Devon guy from team aqua/magma but he also tells us to delever a letter to steven and the Devon goods to stern in slateport
there is no such thing as a darkball
No one.
after you catch all the Pokemon and beat the eleat fore mewtwo gives it to you
Watson gives it to you
the word shop gives you a clue.
wynaut at lv. 5
u can't but u can clone Pokemon
say thank you