How do you get torchic in pokemon black?

You can't get Torchic in Pokémon Black.

Torchic is a Fire-type starter Pokemon exclusive to the Pokémon Ruby, Sapphire, and Emerald games.

You can obtain other Fire-type Pokémon in Pokémon Black, such as:

* Tepig (Starter Pokemon)

* Vulpix

* Flareon

* Houndour

* Magmar

* Darmanitan

To get Torchic, you would need to play Pokémon Ruby, Sapphire, or Emerald, or use a trading method to obtain it from another player who has it.