Choose bulbusaur as your starter receive the national pokedex deliver the ruby and sapphire to celio then look around kanto for it and use your masterball on it.
entei is ONLY if you have a Bulbasaur as a starter
You cannot catch the legendary dogs in Diamond or Pearl, you must migrate from Pokemon LeafGreen, FireRed, Colosseum, or XD.
Entei is a powerful Fire-type legendary; however, it mainly flees in Pokemon FireRed, LeafGreen, Silver, Gold, Crystal, Heartgold, and SoulSilver. It wouldn't hit your Gastly, unless Mean Look is used. You can catch Entei with any Pokemon, because it just requires at least a Poke Ball to attempt to catch it. Be careful, though, if Entei doesn't run or get caught, it can easily defeat Gastly.
Capture Entei/Raikou/Suicune.
You cannot catch it on Pokemon firered only on diamond pearl and thhe new one Pokemon platinum
You can't.
entei is ONLY if you have a Bulbasaur as a starter
You can't. You have to migrate from LeafGreen or FireRed.
You can't, because Entei isn't in Sapphire. You'll have to trade one from FireRed/LeafGreen, where you have to choose Bulbasaur to encounter it.
To get Entei on FireRed, you must trade from Colosseum on the Gamecube/Wii.
Entei, Raikou, and Suicune are NOT obtainable in Pokemon Platinum.You will either need to catch them in Firered/Leafgreen and migrate them or trade with someone else that has them.
This is VERY debatable. Most say Mewtwo, Mew, Raikou, Entei, Suicune.
No you cannot catch Entei in Pokemon Emerald.
if you have firered or leafgreenyou will be able to catch entei ,raikou, suicune only if you beat the elite four then when you catch the three lengendaries then migrate then into Pokemon diamond
You cannot catch the legendary dogs in Diamond or Pearl, you must migrate from Pokemon LeafGreen, FireRed, Colosseum, or XD.
You cannot. You can transfer it from Pokémon Colosseum or Pokémon FireRed or LeafGreen (provided that your starter was Bulbasaur).
You can't catch entei in Pokemon black he is on a different version