Ryu Kokki is a character version of the card "Ryu Kokki".


Yu-Gi-Oh! Ultimate Masters: World Championship Tournament 2006

In this game, Ryu Kokki appears as one of the Limited Duel opponents; it challenging the player to defeat it using no monsters that are not Zombie-Type.


Ryu Kokki uses a pure Zombie Deck titled "Ruler of the Underworld".

Ruler of the Underworld
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