Entei cannot be caught in Red - it doesn't even exist in the game.
eventually, yes
wherever you want him to be
Entei
No, you can catch Entei without catching Moltres.
MIGRATE IT FROM LEAFGREEN OR FIRE RED
beat him to red then throw an ultra ball
mewtwo,entei,raiku,suikuin,articuno zapados and moltres
Articuno, Zapdos, Moltres, Mewtwo, Mew, Raikou, Entei, and Suicune
it roams but u can only find entei in fire red.
You cant get entei in any of the hoen region games. Entei is a Johto region Pokemon
use a level ball when its health is on red and ur Pokemon is lv 60
you c'ant capture entei in Pokemon ruby do you understand