Card Appearances:Number 17: Leviathan Dragon


 * In Rank 2 and episode 1, Shark plays this card against Yuma Tsukumo. He overlays "Big Jaws" and "Skull Kraken" to Xyz Summon it. Using its effect, he detaches "Skull Kraken" to increase its ATK by 500. It attacks and destroys Yuma's "Gagaga Magician".


 * In Rank 3 and episode 2, Yuma attempts to destroy this card with "Gogogo Golem", whose ATK was increased via "Blustering Winds". It does not work, as a "Numbers" monster can only be destroyed by other "Numbers" monster in the anime and manga. Ryoga detaches the overlaid "Big Jaws" to increase its ATK by another 500. It attacks and destroys "Gogogo Golem".


 * In Rank 4 and episode 2, Ryoga attacks Yuma's "Number 39: Utopia" with this card. Yuma negates the attack with the effect of "Utopia" by detaching the overlaid "Ganbara Knight". On his turn, Yuma attacks this card with "Utopia", but negates his own attack by detaching the overlaid "Gagaga Magician". This lets him activate "Double Up Chance", doubling the ATK of "Utopia" and letting it attack again. This card is destroyed and Ryoga loses. The card is absorbed by Astral afterwards.


 * In episode 3, this card is shown in Yuma's Extra Deck as he Duels Professor Ukyo and Astral explains that Yuma has access to the the "Numbers" that Astral absorbs. In the next episode, Yuma Xyz Summons this card by overlaying "Zubaba Knight" and "Achacha Archer". It attacks and destroys Ukyo's "Number 34: Terror-Byte".


 * In episode 6, Yuma plays this card against Tokunosuke Omoteura. He overlays "Gagaga Magician" (changed to Level 3 via its own effect) with "Rai-Rider" to Xyz Summon it. Tokunosuke takes control of it with his face-down "Reverse Mist". It attacks "Baby Tragon", but Yuma protects it with his face-down "Half Unbreak". Yuma uses "Needle Swordsman" to attack directly via the effect of "Baby Tragon", returning "Uratra C" and "Reverse Mist" to Tokunosuke's hand and giving control of this card and "Utopia" back to Yuma. This card destroys Tokunosuke's "Urauutan".


 * In episode 9, this card appears in flashbacks.


 * In episode 10, this card appears in Astral's explanation of what Yuma should have done while Dueling Shark.


 * In episode 14, Yuma plays this card against Kaito Tenjo. He overlays "Zubaba Knight" and "Copy Knight" to Xyz Summon it. He detaches an Overlay Unit to increase its ATK by 500. This lets him use "Cross Attack" so that "Utopia" could attack directly. Kaito negates the attack with "Photonize" and adds the ATK of "Utopia" to his "Galaxy-Eyes Photon Dragon".


 * In episode 17, this card appears in a flashback to episode 6.


 * This card's attack name is Vice Stream.