Genesis Omega Dragon

"Genesis Omega Dragon", or "G.O.D." (, Jeneshisu Omega Doragon), is a mysterious card in the Yu-Gi-Oh! ARC-V manga, and primary antagonist of the series.

Yūya's ultimate goal is to find this card, which he claims will decide the future of the world. According to Reiji, G.O.D came from between dimensions during the process of adding mass to Solid Vision technology. According to what Reiji heard from his father, Leo Akaba, he and Yūya's father, Yūshō Sakaki, found G.O.D when a wormhole that should have connected to the virtual dimension that contained mass instead connected to a new dimension, which is where G.O.D came from.

According to Yūshō, he and Leo experimented the card when they found it, but Yūshō found the card too dangerous and proposed to end the experiment. Leo, however, was obsessed with it and used to military to continue the research, causing it to go out of control. Yūshō took the card from the military, but it's already went on a rampage and started destroying the world. Following its rampage, Yūshō also learned that G.O.D is artificially created rather than a chance phenomenon from another dimension that he and Leo initially believed.

To avoid the whole world being destroyed, Yūshō, who managed to learn how to control part of its power, used it to regress time that flung Yūya and Reiji into the past, becoming an incident called World Illusion.