It is almost impossible to find it again
you need thunderous and tornadous to get him
It depends did you kill it run away? You get to catch it again if it killed you'. Tip: always save in front of a legenarie so that you can turn your game off if you lose!
No, you can catch them only once per game.
No, you can't, you can only catch Thundurus in White, and Tornadus in White. You'll have to trade or cheat (Not recommended) or something. If you do happen to get both, though, put them in your party and go to Abundant Shrine (Use Surf and Waterfall and follow the map) to meet and battle a level 70 Landorus, and Ground/Flying type.
you can't you have to reset your game if you want to catch him
Yes, but you need Thunderous and Tornadous.
First catch thundrous, trade 4 tornadous, then go to abundant shrine
No. Once a Pokemon faints you can't catch him. Sorry. No. Once a Pokemon faints you can't catch him. Sorry.
You dont once its dead its dead
You can not counter Tornadous in white, he's only in black. The only way to get him is to link trade
sadly, once you knock it out, it doesnt come back
Tornadus does not evolve.
You will have to transfer Tornadus from the Dream Radar application or you will have to arrange a trade with another player because Tornadus cannot be caught in Pokémon White 2.
you need thunderous and tornadous to get him
It depends did you kill it run away? You get to catch it again if it killed you'. Tip: always save in front of a legenarie so that you can turn your game off if you lose!
i think that in black u get tornadous
You can't catch Mespirit if you killed it, it will mysteriously disappear in the game. It's the same thing as if you defeat a Legendary Pokemon, you won't have another chance to catch it.