in Pokemon ruby there are these legendaries: Groudon, rayquasa, regice, regirock, regesteel, latios. (these are without cheats or events)
Sadly, no. The creators of the game forgot to add in the Pokedex, so trading is impossible without GameShark. :(
Tornadus, Landorous, Reshiram, Virizion, Terrakion, Cobalion, Kyurem, and Victini.
if you want to cheat to get all legendary Pokemon on ruby you have to play on the computer
you can't get the black flute in leaf green but you can in Pokemon ruby, sapphire and emerald then trade it to leaf green.
No.
It is in the wild, anywhere. Whenever you change location (go into houses, etc) it will change place. You need to 'unlock' it before you can get it though.
Have a ruby or another sapphire trade you a legendary!
There are 6.
Groudon and Rayquaza
Ground
The Legendary Pokemon in Ruby are Kyogre, Groudon, Rayquaza, Deoxys, Jirachi, Latios, Latias, Regice, Regirock, and Registeel.
You cannot get the Legendary Dogs (or Beasts such as Raikou, Suicune and Entei) in Ruby without either trading for them or cheating for them because they are not available in the wild in Ruby in any way, shape or form. But you can catch it in Pokemon Ruby Destiny-Reign of Legends. But in the original Ruby or Sapphire you can't get it.