The old man (老人 rōjin) is a character in the Yu-Gi-Oh! anime. He is a non-player character in the Legendary Heroes video game.
The old man observed Yugi Muto, Joey Wheeler, and Mokuba Kaiba getting thrown back by a sandstorm after attempting to cross the desert and told them that they would need a "Niwatori" card to cross it. When questioned about how to obtain the card, he kept repeating that they would need a "Niwatori" card to cross the desert, as-is the case with video game non-player characters, who have only been programmed to say a limited amount of dialogue. (In the English dub, his dialogue did not repeat. Instead he told them the "Niwatori" card could only be won.)