Red Dragon Archfiend, known as Red Daemon's Dragon in the Japanese version, is a Duel Monster Spirit, who is one of the servants of the Crimson Dragon, often referred to as the Signer Dragons.
Jack Atlas is the Signer associated with "Red Dragon Archfiend" card, often referring to it as his soul.
10,000 years ago, Red Dragon Archfiend battle against Red Nova along with Crimson Dragon and other Dragons.
5,000 years later, Red Dragon Archfiend served the Crimson Dragon and fought alongside him and the other Dragons in the ancient battle against the Earthbound Immortals.
- ↑ Yu-Gi-Oh! 5D's episode 30: "Fight or Flight"