Trade them
The Relocator only lets you transfer Celebi and the 3 'crown' legendary beasts. But later in the game, the PokeTransfer lab lets you transfer any pokemon.
Transfer them from your GBA games.
None. Zapdos is not obtainable in Pokemon Black from the wild. You'll need to transfer it using the Poke Transfer or trade for it.
If you don't have anybody transfer over Pokemon for the Zorua and Zoroark, then none.
you don't have to to anything with the orbs. They only give you the orbs so if you transfer those legendary Pokemon to Pokemon black or white you can give those legendary Pokemon the orbs.
In Pokemon Black Version the legendary is Reshiram and Pokemon White its Zerkrom.The only way to get both is to transfer Zerkrom to Pokemon Black Version or Reshiram to Pokemon White Version.
you have to catch it in firered or leafgreen and transfer it to the pal park via the dual slot
If you have legendary's from other games which you like , transfer them when you have beaten the game. Or use pokemon codes and stuff.
It is a rare pokemon, but it is not a legendary pokemon
Unknown is not a legendary Pokemon but it is considered rare. Legendary Pokemon are one of a kinds.
no lileep is not a legendary pokemon but it is an ancient pokemon
The legendary is palkia