Yu-Gi-Oh! The Daikaiju Saga is a fanfiction written by Super_Puzzler of YuGiOhRealms.com and XeroCreative.com. Puzzler also goes by the name of Wolfgang DelaSangre, the name of a character he created for a Yu-Gi-Oh!-based role-playing federation known as the XeroCreative Dueling Federation, or XDF. Puzzler has stated that he has plans to introduce this same character, as well as another XDF veteran, into the Daikaiju Saga, establishing a link between the two.