Card Appearances:Mobius Castle
- In episode 75, Frost uses this card during his Tag Duel with Thunder against Syrus Truesdale and Tyranno Hassleberry. After this card is activated, "Dark Driceratops" loses 500 ATK and DEF due to it being a Dinosaur-type monster. "Mobius the Frost Monarch" then attacks and destroys "Dark Driceratops". After "Dark Tyranno" is summoned, this card decreases the ATK and DEF of "Dark Tyranno" by 500. In the next episode, this card decreases the ATK and DEF of "Element Saurus" by 500 after the latter is summoned. After Syrus activates "Dark Computer Virus" to change the target of "Side Attack" to him, "Element Saurus" regains the ATK and DEF this card took from it. Hassleberry then activates "Jurassic Impact" to destroy all monsters on the field and inflict 1000 damage to all players for each of their destroyed monsters. Since "Mobius the Frost Monarch" was no longer on the field, this card was destroyed due to its own effect.
