The Sacred Beasts (三幻魔, Sangenma , Three Phantom Demons in the Japanese anime) are prominent plot points in Yu-Gi-Oh! GX. Known as Uria, Lord of Searing Flames, Hamon, Lord of Striking Thunder, and Raviel, Lord of Phantasms. They are dark counterparts to the God cards, but their history and reason for existing are not made clear. The Chancellor of Duel Academy mentions a legend that they have the power to destroy Duel Monster cards by absorbing their energy, and they were thus sealed on the island. Like the God cards, the Beasts are depicted as the most powerful of all Duel Monsters in GX and serve essentially the same purpose as the God cards did in the original anime.
The main antagonist of the first season, Kagemaru, used the cards to drain energy to rejuvenate his aged body, but was defeated. The antagonist of the third season, Yubel, also used them for the same purpose of rejuvenating itself. Yubel also reveals the Sacred Beasts have a combined form, Armitael, Phantasm of Chaos, although its design and role differ greatly from the combined form of the God Cards. These monsters reflect the Egyptian God Cards; Slifer the Sky Dragon, Winged Dragon of Ra & Obelisk the Tormentor.Uria, Lord of Searing Flames, is the counterpart of Slifer the Sky Dragon. Hamon, Lord of Striking Thunder, is the counterpart of The Winged Dragon of Ra. Raviel, Lord of Phantasms, is the counterpart of Obelisk the Tormentor. The Sacred Beasts are very much like a zombie/dead version of the Egyptian Gods. The Sacred Beast Cards work well with any duelist playing a Chaos deck. However, unlike the Egyptian God Cards, Sacred Beast Cards are not immune to trap, spell and monster effect cards.[2