You can't find one you need to trade one from FireRed/LeafGreen/Ruby/Sapphire or Emerald
Deoxys cannot be found in Pokémon Black 2.
there are no deoxys in Pokemon quartz version there r different pokemons, you will find it on other versions. by:kordell the Pokemon ranger
Deoxys is a legendary Pokemon which has various different forms. To find one in FireRed version, you need to have an Aurora Ticket.
deoxys are on birth island and you shauld have af aura ticket
Deoxys.
The Attack version Deoxys can be found by completing the puzzle on Island #9 in Fire Red only. The Defense version Deoxys can be found by completing the puzzle in Island #9 in LeafGreen only. -jean- >w<
There is a fanmade Pokemon Cursed Black version on cartrige, however there is a rom you can download (i can not find the website again, I will improve the answer when i do find it, sorry)
Deoxys is not a wild Pokemon in SoulSilver. Deoxys has to be traded into the game in order for you to get it. Deoxys can also be received by event, and one recently took place in Japan for Deoxys.
Does chaos black version even exist? Yes
You can't, you can only find that on the white version. You can find Tornadous in Black.
You cannot find a wild Deoxys in in Pokemon Soul Silver, or HeartGold. Deoxys can only be obtained by trading with someone or by getting one at special distributions.
Braviary is only in Pokemon White. Pokemon Black gets stupid Mandibuzz -_-