- In episode 101, Number 96 obtains this card after defeating Battle Ox, the Number Guardian guarding the card.
- In episode 102, Number 96 uses this card during his Duel against Astral. He Xyz Summons this card by overlaying two copies of "Malicevorous Knife". "Number 96: Dark Mist" then attacks "Number 39: Utopia" and Number 96 activates the effect of "Dark Mist" to halve the ATK of "Utopia" and add it to the ATK of "Dark Mist". Astral activates the effect of "Utopia" to negate the attack, but Number 96 activates this card's effect to negate the effect of "Utopia" and inflict 500 damage to Astral by detaching a "Malicevorous Knife". "Dark Mist" then destroys "Utopia". This card then attacks directly. Later Astral activates the effect of "Explossum" to equip it to "Dark Mist" and explains that the effect of "Explossum" will destroy "Dark Mist" when it has no Overlay Units. Number 96 then activates this card's effect to negate the effect of "Explossum" and inflict 500 damage to Astral by detaching another "Malicevorous Knife". Later Number 96 activates "Rank-Up-Magic Barian's Force" to Rank-Up this card via Chaos Xyz Evolution in order to Xyz Summon "Chaos Number 65: King Overfiend".
- In episode 112, Vector obtains this card along with every "Number" in Number 96's possession after the power of Number 96 returned to Don Thousand.
- In episode 129, this card appears in a series of flashbacks Don Thousand has when he explains the reason why the "Mythyrian Numbers" yielded such great power was due to the fact that they were sealing away his power. Because the seal was undone due to the "Mythyrian" Numbers being removed from their ruins, Don Thousand's powers were coming back to him.
- In episode 130, this card appears in a series of flashbacks Astral has when he explains that the "Mythyrian Numbers" are the very memories of the Seven Barian Emperors' lives when they were humans.
- In episode 138, Don Thousand absorbs this card along with every "Number" in Vector's possession after he absorbs Vector.
- In episode 141, Nash absorbs this card along with every "Number" in Don Thousand's possession after Don Thousand is defeated and he willingly allows his power to be absorbed by Nash.
- In episode 143, Astral absorbs this card along with every "Number" in Nash's possession after Yuma defeats Nash (excluding the "Over Hundred Numbers" and their Chaos forms).
- In episode 146, this card appears in the montage of "Numbers" in the Summoning sequence of "Number 99: Utopic Dragon".
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