No, you don't, if you're playing leafgreen or firered. But you have to beat the elite four and catch Mewtwo, which is located in the Cerulean Cave. Mewtwo is only available after you defeated the E.F.
Raikou #243 Entei #244 Suicune #245 The number they have on the National Pokedex is the same as the Johto Pokedex as well.
Darkrai is #491 in the national pokedex, and it is a Dark type Pokemon.
u can track it on your pokedex( if u already encoutered it)
Catch all the Unown, complete your Pokedex, beat the Elite 4 again, look for the Legendary Dogs (Entei, Raikou, and Suicine), etc. The world is your Cloyster. ...xD
you complete the national pokedex
pokedex or National
gotta catch it first
complete the normal pokedex
You have to catch 151 pokemon to complete the pokedex.
you have to complete the first pokedex
There is only one legitimate way to complete the Sinnoh Pokedex. To complete the Sinnoh Pokedex you must trade for the missing Pokemon with Pokemon Diamond, Pearl or Platinum.
You will only find Raikou if you chose Squirtle as your starter pokemon. After you receive the National Pokedex from Oak, Raikou will begin to roam Kanto. the other way is to have a friend trade you one.