Card Trivia:Number 17: Leviathan Dragon


 * This card is the first revealed member of the "Numbers" archetype. This is also the first Dragon-Type Xyz Monster.


 * This is the Cover Card for Generation Force.
 * This is the first cover card for a booster pack to debut in a manga since "X-Head Cannon", "Y-Dragon Head", and "Z-Metal Tank" debuted in Advent of Union, a gap of over nine years.


 * This card is featured on the artwork of "Xyz Veil".


 * This is the first WATER-Attribute monster to be a Cover Card on a main series Booster Pack and to be a Holographic Rare/Ghost Rare.


 * The number, 17, can be seen on one of its horns.


 * The number, 17, may refer to it being the 17th Ghost Rare released.
 * Curiously, its number in the set it is released in is 039. Yuma's main Number, "Utopia", is the Number 39.
 * Also, the number 1 refers to this card being the first Number introduced in the Yu-Gi-Oh! ZEXAL anime/manga and the number 7 could reference Leviathan Dragon itself being the seventh card played by Shark in his first duel with Yuma.


 * This is the first Xyz Monster to be the cover card of a Booster Pack.
 * Another Xyz Monster with "Number"; "Number C39: Utopia Ray", is also the cover card of a Booster Pack, along with this card.


 * This card having 3 three pairs of wings and arms have some relation with its Xyz Materials as this card uses 2 Level 3 Monsters.


 * In Yu-Gi-Oh! ZEXAL - Episode 001, this monster had a cry very similar to that of "Stardust Dragon". It has since changed.


 * This card's English name comes from the mythical sea creature Leviathan, which explains this card's Attribute.
 * The other use of the name Leviathan is a book by Thomas Hobbes about the need for a strong central power in government to control the chaos of the masses. The cover art of this book depicts the "Leviathan" not as a sea monster, but a giant king whose body is made up of the subjects of the king who has gained their collective power, which is possibly referenced in this card's effect to use its Xyz Material Monsters to increase its ATK.
 * This card's Japanese name comes from a combination of the English words "Leviathan" and "Vice" to make "Levice".


 * This monster's horns resemble Reginald Kastle's hairstyle, if Reginald's head was viewed from above.


 * "Numbers" take the form of something their original owner desires. In the case of this card's owner, it is to become stronger and more powerful. This resulted in a Dragon-Type monster who can increase its own ATK. (Dragons usually focus on brute force.)
 * Also, it fits the theme of Reginald's Deck, as it resembles a sea creature.


 * After this card's ATK increases via its effect, it will have 3000 ATK, which is the same as "Blue-Eyes White Dragon", "Ancient Gear Golem", and post-effect "Montage Dragon", powerful cards used by opponents of the previous series' protagonists in their first Duels.


 * Similar to the protagonists' secondary monsters (Yugi's "Dark Magician Girl", Jaden's "Elemental HERO Shining Flare Wingman", Yusei's "Junk Warrior"), this card has an effect that can increase its ATK.


 * This card is similar to "Number 30: Acid Golem of Destruction".
 * It can reach ATK 3000 ATK through its effect.
 * Both cards has limitations in attacking when they do not have any Xyz Materials.
 * Both cards are WATER "Numbers" monsters.
 * Both of their numbers are related to 15 and 2;17=15+2 while 30=15*2.
 * Both had been used by Reginald Kastle once.


 * This card is the first "Number" that speaks in the dub of Yu-Gi-Oh! ZEXAL, saying "Let the Number take hold".


 * This card is the first "Number" that is Xyz Summoned in the anime.