After Leo and Luna were visited by [[Yusei Fudo]], Yusei observed how Leo's kept slipping during a Duel, so he customized the two Disks to fit them better before leaving.

==Non-canon appearances==

In ''[[Yu-Gi-Oh! 5D's World Championship 2010: Reverse of Arcadia]]'' the Duel Disks are unlocked in the same way as ''Stardust Accelerator'', but the [[Player (WC10)|player]] need only get a Draw in three Duels.