Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
Assuming this question refers to the only games in which you in fact can steal Pokémon from other trainers (Colosseum and XD on the Gamecube), you will only be possible to try to Snag Shadow Pokemon, not regular ones. You will be notified whether or not the opponent has one and should he then you will have to apply the regular principles of catching Pokémon.