Zekrom, Kyurem, Cobalion, Virizion, Terrakion, Tornadus, Landorus, Cresselia, Heatran and Latios. Those are ones that can be caught
pokemon
Regigigas.
Yes, there is if you bring the three legendary birds Zaptos ,Moltress and Articuno and ,bring it to 4th F the legendary Pokemon appearing is Lugia which can be captured! Source: Tried in white 2 and black 2
you can get kyurem
Black and White Kyruem.
You will be able to catch the 3 currently unobtainable legendary Pokemon, Keldeo, Meloetta, and Genesect. Catch 'em all!
2 things there is more than 3 legendary Pokemon in the game and nothing is "unlocked" in the game if that is what you are asking
2
It is Kyurem and Reshiram in White 2, and Kyurem and Zekrom in Black 2.
The password can vary between 2202, 7707, 9909, or the names of the legendary pokemon in black and white 2. Have fun. Pokemon black and white 2 is a great game.
The legendary Pokémon is Zekrom. But there is a form of Kyurem that has a part of Zekrom in it, in which you can find later in the game.
The two on the box cover art are White Kyurem and Black Kyurem.