- For the Key Mace character in the Legendary Heroes arc, see: Iru
Yu-Gi-Oh! episode 147: "Legend of the Dragons"
|Video game debut|
Key Mace is a character version of the card "Key Mace".
Key Mace made friends with young Luna, when she came to the spirit world. The spirits wanted Luna to protect them from evils that threaten the land. However Luna left, unable to cope with the responsibility.
Key Mace appears in the video game Yu-Gi-Oh! 5D's World Championship 2010: Reverse of Arcadia, along with Key Mace #2 (Lock Mace in the Japanese version) and Gate Mace.