Mewtwo, yes, if you have a FireRed or LeafGreen with Mewtwo.
You can't catch Mewtwo on XD, Colosseum, Ruby, Sapphire or Emerald. Mewtwo can be caught in the Fire Red or Leaf Green Version then traded over to Emerald, Ruby, Sapphire, Colosseum or XD.
you have to have beaten the elite four and you have to find the ruby and sapphire for the machine in the Pokemon center on one island. then you can enter cerulean cave and get mewtwo
It is in cereulan city. You can only go there before you beat the elite 4 and bring the ruby and sapphire to celio. You can catch mewtwo there.
Mewtwo can Mega Evolve into either Mega Mewtwo Y or Mega Mewtwo X.
you don't get mewtow in ruby
the mew code for ruby is 71E09BD117FDFD02 and mewtwo is 30621E6F164FED85 these are the right once i think
With a Masterball
Only if you have a code breaker and the master code for ruby plus the mew and mewtwo code
im pretty sure you can find a mew on mirage island in ruby but im not sure about mewtwo
trade from firered or leafgreen.
you can not get mewtwo in Pokemon ruby,sapphire,leafgreen or fire you can only get him on pearl ,dimond and platinum
Mewtwo, yes, if you have a FireRed or LeafGreen with Mewtwo.
you have to get the ruby and the sapphire in the seveii islands you get the sapphire in the dotted hole and you get the ruby in mount ember this can only be done if you have beaten the elite four and after you get the ruby and sapphire you can get mewtwo by going in the cerulan cave. hope this helps! :)
u can only get it by using an action replay code
ANSWER 1:Mewtwo appears only in Fire Red and Leaf Green. You can catch him in either of those games and then trade him to Pokemon Ruby.sorry mate its impossible only way is to trade like this guy said (: (: (: (: (: (: (:ANSWER 2:I regret to tell you that you cannot catch Mewtwo in Ruby. You can only catch Mewtwo in FireRed or LeafGreen. (You can use cheats to get it but it wouldn't be as fun).Mewtwo is at Level 70 in LeafGreen and FireRed so use an Ultra Ball/Timer Ball/Master Ball.If you need/want a Mewtwo you can trade Mewtwo into your Ruby/Sapphire/Emerald Game.
Unfortunatley, you cannot catch Mewtwo in Pokemon Ruby/Saphirre/Emerald. But you can trade it in from Firered/Leafgreen. Also, instead of asking on Answers for Pokemon questions, just go to Serebii.net