that's the thing YOU CANT!!!!!!!!
And like this guy i will tell you this nicely. I think there was a special event not sure but if there was its expiration date probably ended. And the other simple way is if you have LeafGreen/FireRed you insert the cartridge into the ds and then the Pokemon from that game will appear in Pal Park but if you do that, that Pokemon will never appear again in the cartridge. If that doesnt work i don't know. Hope that helps.
Raikou is best because entei and suicune are fegget Raikou all the way 2 reasons He is way cooler then Entei and Suicune. Number 2 he could whoop Suicune and Entei in a battle So suicune and entei are good but overall raikou is better
Starter:Charmander-Suicune Squirtle-Raikou Bulbasaur-Entei
Entai = Fire Suicune = Water Raikou = Electricity
You chase Entei and Raikou across Jhoto and you catch Suicune at the top of Cerulean City.
Entei, Suicune, and Raikou are not available in Pokemon Emerald, Ruby or Sapphire. They can be brought into the game by trading.
try to answer thoughtful
Entei Raikou
You get suicune,raikou,or entei depending on your starter pokemon (charmander = suicune squirtle raikou and bulbasaur entei) and you can get mewtwo in cerulean cave
You can't unless you have joto
Suicune, Raikou, and Entei
raikou suicune and entei.
Entei, raikou and suicune