|Video game debut|
The player meets Gellenduo in the Order Duel World after defeating Layard the Liberator, worrying about misplacing a "Nova Summoner" card they needed to deliver to Airknight Parshath and asking the player to help them find it. The card is later found in the lower area of the Order Duel World and Senju of the Thousand Hands will only give the card to the player by defeating it under special rules.
The player is trailed as a thief for handing Airknight Parshath the "Nova Summoner" card he was meant to get from Gellenduo and they are forced to duel Voltanis the Adjudicator, but Gellenduo interrupts the trail after the duel and manages to free the player from all charges.
Gellenduo is not dueled at any point of the game.