"The Black Disk is a Duel Disk item in the World Championship video games. It can be worn by both male and female players. This Duel Disk is based on the Duel Disk used by Richie Merced in the Yu-Gi-Oh! R manga. It can be unlocked if the player defeats Joey Wheeler ten times."@en . . "Black Disk"@en . . . . "The Black Disk is a Duel Disk item in the World Championship video games. It can be worn by both male and female players. This Duel Disk is based on the Duel Disk used by Richie Merced in the Yu-Gi-Oh! R manga. It can be unlocked if the player defeats Joey Wheeler ten times."@en .