There is no news of this happening in any recent games to come.
This is the code for "Catch Trainers Pokemon" B6C5368A 08BE8FF4 B8D95CFE 06ED6EA1 E151C402 8A229A83 8E883EFF 92E9660D Press L+R in battle to be able to catch trainers pokemons as if they were wild.
Buy a action replay and then downlode the cheat onto the action replay. Put the action replay in the game slot then put Pokemon in the action replay. After that you pick the Pokemon game you are playingnthen start the game and then you will be able to catch trainers Pokemon.
The only way I know is using the DS action replay. They are found at Walmart for about $10. Then use the codes to be able to catch pokemon.
your'e not suposde to. you see you have too catch it via cheat. you w'ant to ccatch wild Pokemon maibe? the go down to you're bag and then press a on the pokeball of you're choice.
Catch Arceus. Masterballs, or just weakening it until you are able to catch it.
One way to get Piplup if you have Pokemon Diamond, Pearl, or Platnium is to choose him as your Starter Pokemon. Another way is to buy DS or DSI Action Replay and use a cheat code to catch trainers Pokemon, when you have that cheat and you chose Chimchar as your starter Pokemon when you battle your friend you will be able to catch his Piplup The last way is to Trade with a friend. To trade you can have Pokemon Diamond, Pearl, Platnium, Heartgold, Soulsliver and I think any of the Pokemon GBA games such as Emerald, Ruby, Sapphire, FireRed, Leafgreen and etc.
After beating the Elite 4 and the Champion (Pokemon League) the first time, you'll be given the S.S Ticket, allowing you to sail from Slateport to Lilycove and vice versa... After the first ride, you will then be able to sail to the Battle Frontier... Battle Frontier is a place where many trainers meet, not just trainers, but trainers with very powerful Pokemon... You can catch one Sudo Woodo in there... it's also the place where you can do the "Cloning Glitch" (Battle Tower)...
you can't catch groundon in Pokemon fire red! you may be able to trade it from Pokemon ruby though.
You will NEVER be able
In every single Pokemon game and version, there are different Pokemon you can capture and train. In some games, you can catch one species of Pokemon, but not be able to catch it in another. In this case, surskit cannot be caught in emerald version, same with Roselia, while in sapphire and ruby, those Pokemon can be caught.
You can't get a skuntank in Pokemon Pearl version. You must trade it from Pokemon diamond or platinum. Instead of being able to catch a stunky you are able to catch glameow and purugly. Hope this helped
In Pokemon FireRed you have to get through Silph Co to continue. To get through it, you need to be able to beat 31 trainers.