Card Trivia:Zefraath
- This monster appears in the artworks of "Zefra War" and "Void Apocalypse".
- This card's Japanese name is a reference to the Torah and Tetragrammaton.
- This card has several unique characteristics:
- It is the first monster with an original ATK of 3450.
- It is the first Main Deck Pendulum Monster that cannot be Pendulum Summoned and has the highest ATK of all Main Deck Pendulum Monsters. It is also the first Level 11 Pendulum Monster.
- It has the highest Level of all Rock monsters, tied with "Nibiru, the Primal Being".
- It is the first card that allows its controller to conduct a second Pendulum Summon in one turn.
- This card also has several unique characteristics compared to the other "Zefra" monsters:
- It has a Pendulum Effect that can be activated, and without their usual restrictive effect.
- Its Pendulum Scale is neither 1 or 7, and is changeable through its Pendulum Effect.
- It is a Nomi monster.
- It is Level 11, matching "Sophia, Goddess of Rebirth" and "Tierra, Source of Destruction". This card's confrontation with the latter is depicted in the artwork of "Zefra War".
- Its Level also refers to it being the 11th "Zefra" monsters.
- It has two pairs of the "Zefra" wings, unlike the other members, which only have one pair.
- It cannot be Pendulum Summoned, but instead must be Special Summoned by a special method that mimics Extra Deck Summoning methods. It also cannot be Summoned from anywhere else, except from the Extra Deck, despite being a Main Deck monster.
- It is also the only "Zefra" monster without any connection with any of the 5 archetypes ("Shaddoll", "tellarknight", "Yang Zing", "Nekroz", and "Ritual Beast") by name, making it the first and the only pure "Zefra" monster.
- It has the ten "Zefra" orbs in its tail.
- According to the Master Guide 5 card storylines, "Tellarknight Ptolemaeus" used the power of the 9 "Yang Zings" to release the power of the hidden eleventh "Zefra" that was sealed into the Sephirot system, hence the "Yang Zing" insignia on the center plate of this monster's waist armor.
- The eleventh "Zefra" chose "Shaddoll Zefracore" to materialize that power, hence this monster's general appearance and Type. The last three digits of this card's ATK and DEF also match those of "Zefracore".