Enemy Card

Enemy cards appear in Kingdom Hearts: Chain of Memories as a type of card which provides temporary passive effects within battle. While enemy cards are placed in Sora and Riku's decks like the other, immediate-use types of cards, they are kept separate during battle and do not have numbered values. Each type of Heartless encountered in the game has its own enemy card, which Sora can obtain as a random reward after winning a battle. Bosses also have their own enemy cards, and although these are non-random rewards, some bosses must be defeated multiple times before they will drop their enemy card. Although Riku cannot modify his deck, each deck he is given includes an enemy card based on a Heartless native to that floor's world. Furthermore, Riku is allowed to keep any boss-based enemy cards that he obtains.

Kingdom Hearts Re:Chain of Memories modifies the effects of the Darkball and Ansem enemy cards, as their original effects were only usable in Link Mode, which was removed from the game. As a result of the changes, the Darkball card is no longer available in Sora's Tale, and the Ansem card's practical effect is reduced to its elemental resistances. Kingdom Hearts Re:Chain of Memories also introduces eight additional enemy cards based on the Organization members who did not have cards in the original release, as well as two Special Cards. One of the new enemy cards, Zexion, can be obtained through normal gameplay, while the other seven are obtained as game completion bonuses. The two Special Cards are used in the same way as enemy cards, but do not represent any enemy and are obtained as Bounties once every other card has been collected.

Enemy cards are available in both Sora's Tale and Reverse/Rebirth. While Heartless and Heartless bosses use numbered versions of their enemy card to attack, character bosses instead use attack and magic versions of their enemy cards. The only enemy cards that are not obtainable are "Honey Bee", "Marluxia (Second Form)", and "Marluxia (Third Form)". However, character bosses can also use various enemy cards as passive abilities, in the same manner that Sora and Riku can.