Yes,actually you can by more than one way! You can transfer torchic from pokemon RSE (Ruby,Sapphire,and emerald) into heartgold and soulsilver and then transfer it again into black or white, (You need heartgold,soulsilver,black,and white versions all completed before doing this transfer) Another way to get torchic in Black and white is to use an action replay code from codejunkies in order to get torchic (as long as you have an action replay,you can do this very easily)
No.
in emerald its torchick
mudkip,treeko and torchick.
When i played the game i found it easy with torchick but the other two are just as good, with the firs gym(for torchick)evolve first.
you cant you have to transfer it from Pokemon platinum by using pal park which can only be used after you get the national dex. (by the way, its torchic, not torchick.)
If you pick Treeko, she picks Torchick. If you pick Torchick, she picks Mudkip. If you pick Mudkip, she picks Treeko.
Professor birth gives out these pokemon: Treeko, Mudkip, and Torchick.
migrate from ruby,saphire, or emerald.
Mudkip, Torchick, and Treeko
Torchick is a good Pokemon if you train it right anything should work
Find Steven in Silph.Co. (Saffron city). Talk to him and answer his question with "red orb". Come back with an empty pokemon slot and you will receive a Torchick. If you choose blue or green, you will get Mudkip or Treecko respectively.
you cant you have to migrate it and u have to have the national pokedex in Pokemon diamond