yes but only if you chose bulbasaur he will be roaming around after you get national dex and beat the elite four
zapdos,moltres,ardicuno,suicuine,enti,raicku
He can be found anywhere at random
You can't.
All starters, including Bulbasaur, can't be caught in Pokemon LeafGreen.
If you trade Pokemon between leafgreen and ruby ruby will have your leafgreen Pokemon and leafgreen will have the ruby Pokemon both in the party they will not be sent to the PC unless you personally walk to the PC and do so.
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.
Theres raiku,enti,suicune,articuno,zapdose,moletres,mewtwo,jiratchi,deyoxes, rayquaza.
The legendareys you seek are-mewtwo,mew,enti,raiko,suicoon(raiko=squrital+enti=bulbasaur+suicoon eaquls charmander)zapdos moltres and atucono mew deoxsas and that's all!
No. you must start with bulbasaur to get Entei
Entei can be found in Leaf Green if your first Pokemon was Bulbasaur and you've beaten the Elite Four. Entei can be anywhere in the wild. There is no exact location.
enti is in ecrutek city in the burned temple
enti is a rare Pokemon
you get a entie at sunshore city
If by enti you mean Entei the legendary dog then yes, all three dogs are there.
No, only FireRed and LeefGreen
Yes you can trade leafgreen version Pokemon to another leafgreen version.
1st beat the elite 4 then get national pokedex (beat elite 4 with 60 Pokemon caught) then they appear at random so be careful and good luck. =^p