Zekrom and Reshiram were originally the main legends of Pokemon Black and White, but in Black 2 and White 2, they are more like secondary legends to be merged with Kyurem. After catching Kyurem, you will find a special item that allows you to merge Kyurem with Zekrom or Reshiram. After capturing one of them, go to the North-most cave in Giant Chasm to find Kyurem. To get Kyurem you must first catch Zekrom or Reshiram from Dragonspiral Tower. It can be captured and used as regular Kyurem, or it can be merged with Zekrom or Reshiram to make Black Kyurem or White Kyurem. Kyurem is the main Legendary Pokemon of Black 2 and White 2. Three Fighting Legends (Swords of Justice).

Reshiram - Dragonspiral Tower (White 2).

The following Legendary Pokemon can be found in Black 2 and White 2. Place one of these on the beast with 1 HP and you may have a shot at catching it. The most valuable Status Effects are Sleep and Paralysis. The Pokemon's HP is at 1 and it still won't be captured?! Inflict a Status Effect on it. False Swipe can be taught to a Pokemon from TM54, found at Reversal Mountain. If you use it again, it will cause the Pokemon to faint. The Attack False Swipe is a valuable move which will reduce a Pokemon's HP to 1 if it would have otherwise caused a Pokemon to faint. If needed, use them for Kyurem and either Zekrom or Reshiram. One is given in Mistralton City, and the other is given at the Plasma Frigate at the P2 Laboratory. Note: There are two Master Balls in Black 2 and White 2.

If it's night, or you're in a cave, using a Dusk Ball will increase your chances a ton. If the battle is going on for some time, which it probably will, you can always use a Timer Ball to help out. Ultra Balls may be an obvious choice, but those things still may make it hard on you. There are many Poke Balls out there that can help you catch a Legendary Pokemon. You may accidentally make the Pokemon faint or you may get knocked out by going easy on the guy. If you really want to catch a Legendary Pokemon, you should save your game before attempting it. You can walk up to them and interact with them to initiate the battle. Most Legendary Pokemon are stationary on the map. We'll try to prevent you from smashing your (3)DS with a few tips on catching these Legendary Beasts. Legendary Pokemon are among the hardest Pokemon to capture in any game.

Pokemon black 2 and white 2 rom