Tornado, Thundurus and Landorus cannot be found in Pokémon Black 2. You will need to use the Dream Radar application which is available on the Nintendo 3DS eShop in order to catch Tornadus, Thundurus and Landorus. Once you have found and caught them in the Dream Radar then you can send them over to your Pokémon Black 2 game.
if you talk to the shrine with tornadus and thunderus then landorus attacks you and you can catch it in battle.
Thunderus: by trading, yes. not in the wild. Landorus: bring Tornadus and Thunderus to the Abundant shrine on route 14 to encounter it.
If you mean using other peoples' thunderus and tornadus then yes but if you mean not having either one at all, then nope.
First you need the two Pokemon Thunderus and Tornadus. Then you have to go to the shrine at the end of Abundant Shrine. Make sure you have Thunderus and Tornadus in your party and press "A" on the shrine. Landorus should appear and engage you in a Pokemon battle.
Victini, Reshiram, Zekrom, Cabalion, Terrakion, Virizion, Landorus, Kyurem, Tornadus, and Thunderus.
Landorus is found at the back of the abundant shrine, however, it will not appear unless both tornadus and thunderus are in your party.
You have to go to all the shrines to find thunderus, tornados, and landorus and defeat thunderus and tornadus in chase and landorus in a battle
That's Landorus. You have to have Tornadus (After Virizion) and Thunderus (Before Reshiram) in the same game. Thunderus is White-exlusive and Tornadus is Black-exlusive. You have to have both games or trade from a friend to get the other. Go to the Abundant Shrine with Both of them in your Party and Landorus will be there
Victini, Reshiram(black only), Zekrom(white only), Cobalion, Terrakion, Verizion, Landorus, Kyurem, Tornadus, and Thunderus.
White 2: White Kyurem Black 2: Black Kyurem Black 2 and White 2: Therian forms of Tornadus, Thunderus and Landorus.
You must trade from Pokemon White, which instead of Tornadus, it will be Thunderus. :)
You catch Thundurus, but must trade Tornadus from Pokemon Black.