Card Trivia:Adreus, Keeper of Armageddon
- This monster appears in the artworks of "Black and White Wave", "Overtake Summon", "Xyz Double Back", "Xyz Import", and "Xyz Reception".
- This card is the DARK counterpart of "Tiras, Keeper of Genesis".
- This card was the first TCG exclusive Xyz Monster.
- If one looks closely, it is possible to see a modern city as this card's background. This might suggest that our modern civilization is close to an end.
- This theory can be proven with its LIGHT counterpart, "Tiras, Keeper of Genesis", whose background features an ancient/historical city, which can be interpreted as the beginning of civilization (Genesis - beginning).