That would be Rayquaza.
The most powerfull Pokemon in Pokemon ruby i think is Groundon,SAphire Kyogre,Emerald RAyquasa??
you cant go to mars on pokemon saphire you can only go to mars if you were a astronot
Swampert
almost every water Pokemon
I don't know if these is 100% ture but all my friends and I all decided that the strongest Pokemon in Emerald, Ruby or Saphire is most likely, one of the other super ancient Pokemon. Jirichie is suriosly strong too, I was able to kick my friend's level 78 Groudon with a level 51 Jirichie.
pokemon ruby, saphire, and emeraldyj
in mossdeep
It is in the Hoenn region =]
you don't.
only in Japanese version.
No. (lol)~S4CR3D W0LF
In the Cave of Origin.