Card Trivia:Adreus, Keeper of Armageddon
- This is a cover card of Extra Pack 2012.
- This monster appears in the artworks of "Xyz Double Back", "Xyz Reception", "Black and White Wave", and "Overtake Summon".
- This card is the DARK counterpart of "Tiras, Keeper of Genesis".
- This card is also the first Dark counterpart Xyz Monster.
- 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).
- The Generation Force Spanish print of this card showed the word "monstruos" ("monsters") with a capital letter. This mistake was corrected in the BP01 print.
