To get Entei on FireRed, you must trade from Colosseum on the Gamecube/Wii.
You can't.
If you picked Bulbasaur as your starter Pokemon, Entei can be found roaming around Kanto after you beat the elite four.
Need to have picked bulbusaur as your starter.
you get him in 7 island and you must have a venasour
You migrate from Pokemon Firered/Leafgreen.you have to use action replay.
entei is ONLY if you have a Bulbasaur as a starter
You have to migrate it from Pokemon FireRed, LeafGreen, or any other Pokemon game that you happen to have an Entei in. Entei can't be caught in Pokemon Diamond or Pearl. Sorry.
Rare Pokemon that can be caught in firered are: Moltres, Zapdos, Articuno, Mewtwo, Raikou/Suicune/Entei (depends on which starter Pokemon you choose).
Yes by migrating it from firered or leafgreen.
Capture Entei/Raikou/Suicune.
If your talking about Entei, you don't. Trade him from FireRed or LeafGreen.
Moltres, Zapdos, Articuno, Raikou/Suicune/Entei.