Card Trivia:Ultimaya Tzolkin
- This monster is based on the true form of the Ultimate God entity in the Yu-Gi-Oh! 5D's manga.
- This card can be considered the manga counterpart of "Crimson Dragon", which is based on the Crimson Dragon from the Yu-Gi-Oh! 5D's anime.
- This card's name may be derived from Tzolk'in, the basic cycle of the Mesoamerican Maya calendar that figures preeminently in the society and rituals of the ancient and modern Maya peoples.
- This monster has an evolved form: "Phantasmal Lord Ultimitl Bishbaalkin".
- This monster has a Link counterpart: "Duel Link Dragon, the Duel Dragon".
- This was the first Dark Synchro Monster to appear in the Yu-Gi-Oh! 5D's manga.
- This was the first Synchro Monster that cannot be Synchro Summoned.
- This card was the first Level 0 monster.
- This is the second Monster Card (other than a Token) to be printed with 0 Level/Rank "stars", after "Number F0: Utopic Future"; "Utopic Future" also has 0 ATK/DEF and a condition that treats it as having a specific Level/Rank other than 0. Both monsters also appeared in the final battles of their respective series.
- This card's Summoning conditions simulate those of a Dark Synchro Monster, due to it being one in the manga. It requires two Level 5 or higher monsters with the same Level, with one Tuner monster and one non-Tuner monster; the difference of those Levels gives a result of 0 (this card's Level).
- This is derived from the card's first appearance in the Yu-Gi-Oh! 5D's manga, where this card was Dark Synchro Summoned using two copies of the Level 8 "Wicked Acolyte Chilam Sabak", with one copy treated as a Dark Tuner monster.
- Due to its OCG/TCG effect, this card cannot Summon all of the Duel Dragons with its effect. It cannot Summon "Ascension Sky Dragon", "Beelzeus of the Diabolic Dragons" and "Dragocytos Corrupted Nethersoul Dragon" (which are Level 10) or "Dragonecro Nethersoul Dragon" (which is a Fusion Monster).
- However, it can Summon all of the Signer Dragons and their Duel Dragon counterparts.
- This card's OCG/TCG artwork is taken from Yu-Gi-Oh! 5D's Ride 59: "The Final Showdown!!", specifically from the panel showing this monster being Summoned.
