after you catch a glimpse of entei, raikou, and suicune at the burned tower in ecruteak city, you can track entei and raikou using your map.
1st of all it is Raikou and by roaming Johto
he roams the map after you beat the game
You cannot catch Raikou in Pokemon Black. You have to transfer it from Diamond, Pearl, Platinum, Heartgold, or Soulsilver.
You cannot catch Raikou in Pokemon Diamond and Pearl. To get Raikou in Pokemon Diamond and Pearl, you must trade for one from Pokemon HeartGold and SoulSilver where it can be caught or transferring from Pokemon FireRed and LeafGreen.
You can only catch it when steven talks to you in vermilion city when you try to get the doll for the copycat. You catch it the way you caught raikou and entei
you can get raikou in the grass. trust me i am 100% sure [all over johto]
It's not A Raikou, its Raikou, as you only get one/two chances of battling him/her and it's legendary I would recomend getting it down to barley any life left and asleep. Catch with a fast ball
In Pokémon HeartGold, the Legendary Pokémon that you can catch in it are Articuno, Zapdos, Moltres, Mewtwo, Raikou, Entei, Suicune, Lugia, Ho-Oh, Latias and Kyogre. You can also catch Latios if you have the Enigma Stone which is only available via a Nintendo Mystery Gift event and you can also catch Rayquaza if you have the Kyogre from "HeartGold" and the Groudon from "SoulSilver."
Ho-Oh Lugia Suicune Articuno Zapdos Moltres Mewtwo Kyogre Raikou Entei Latias
after that, someone at the battle frontier will tell you about latias and latios. then, latias will start roaming kanto.
no!! of cours yo can not catch raikou in ruby raikou can only be cought in the johto region
You catch raikou in vermilion city in the smallest patch of grass