You can't in ruby.
mew cant be caught in ruby unless you have a game shark
im pretty sure you can find a mew on mirage island in ruby but im not sure about mewtwo
there no cheat to catch mew in pokemon ruby
you didn´t get mew qith any cheats in ruby =( you can get mew with an mew-glitch in yellow (blue,red) or you can get a mew from my Pokemon ranch for diamant perl and platin but not for ruby the way to get mew in ruby is ... on a Pokemon tour (Pokemon-day ... , ) or with an cheat ... i hope i can help you :-)
you can find groudon, mew, mewtoo, rayquaza, kyogre...
it is not possible to get mew in Pokemon Ruby unless you use a gameshark code. however it WAS possible to get in emerald prior to an event. Sadly it has passed.
mew is not on ruby u jaskass ... however if you obtain pokemon emerald myou may aquire mew on faraway island and transfer it along to ruby
Nope.
You cannot catch Mew in "Pokémon Ruby."or you can get mew-two in fire red or leaf green.
You need to trade Mew from Emerald
you cant
Mewtwo, yes, if you have a FireRed or LeafGreen with Mewtwo.