If I receive hacked Pokémon from a stranger in trade, does it corrupt my game in any way?

A shiny level 100 legendary is easy to spot but what if I receive a less obvious hack like any legendary from older games non shiny?

  • Is it possible to weed out illegal Pokémon using the bank app? (which supposedly doesn't allow hacked Pokémon to be transferred), and
  • Does owning hacked Pokémon leave a permanent effect on my game?

I neither want to gather hacked Pokémon nor do I want to hurt my gaming experience by trading with strangers but for completing the Pokédex I was planning to exchange older legendary Pokémon from my other games for those that I don't have. Like circle trading one event Pokémon I legally received for others until I have them all in my Pokédex.

  • With advanced savegame editing software it's close to impossible to spot a hacked Pokémon. Nintendo does some verification on online trading (available attacks and other attributes), but it's up to you if you want to trade your Fletchling for a shiny level 100 Xerneas and think it's a legit trade.
    – GiantTree
    Commented Aug 12, 2015 at 17:03
  • Thanks for your feedback. As I made clear in my question I'm not talking about easily detectable hacks like that but legit looking non shiny legendary/event pokemon in GTS or trade with people from online communities via friends code and regular trade and if there are lasting negative effects on my save game. Commented Aug 12, 2015 at 17:10
  • Like trading the legendary dragon from white against the legendary black dragon or better example trading a legit Keldeo for a Dimanche from a stranger... Commented Aug 12, 2015 at 17:29
  • Thank you. That's the answer to my question. Care to submit that as a real answer so I can accept it? Commented Aug 12, 2015 at 18:17

1 Answer 1


Nintendo stated that, if they find out that a Pokémon is not legitimately acquired (ie. cheated it into the game somehow/inconsistent checksums due to savegame editing etc.), the original owner (identified by their NNID or Secret ID for instance) is marked/banned from online trading.

About your game: No need to worry about your game, a Pokémon is just some information stored in your savegame and the OT (original trainer) information is preserved so even if it is a hacked one, you can't be marked as an illegal trader because you received the Pokémon and did not distribute it.

  • This is possibly irrelevant now (requires old firmware) but might be worth adding to the conversation. What would happen if you traded a Pokemon and someone used something like the the web browser exploit on it, then redistributed it? From memory that clones the original Pokemon, so would it have the NNID/Secret ID of the original trainer? That would imply that others could hack Pokemon you trade but you take all the risk, right?
    – Phil D.
    Commented Oct 28, 2015 at 5:18
  • It is possible to set the Secret ID in some hacking softwares. Would that implicate the receiver if it were set to him, instead of the original cheater?
    – Yuu
    Commented Dec 3, 2019 at 9:50

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .