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In episode 4, Jack Atlas used this card in his Turbo Duel against Yusei Fudo. Yusei then destroyed this card with "Speed Warrior" powered up by its own effect. This however activates "Twin-Shield Defender"'s effect and Jack uses that to halve "Junk Warrior"'s ATK until the End Phase. On Yusei's End Phase, "Junk Warrior" regained the ATK that was deducted from it due to this card's effect.

In episode 29, Jack used this card in his Ground Duel against Tetsu Trudge while the latter was a Shadow Drone. Jack's arm was in a sling at the timing, so he had Carly Carmine play his cards for him. Jack tells Carly to summon this card in Defense Position before she ends his turn and Carly does so. On the final turn of the Duel, Jack summons "Dark Resonator" to the field. He then tunes this card with "Dark Resonator" to Synchro Summon "Exploder Dragonwing".

In episode 30, this card is seen in a flashback that Jack has when he remembers he and Carly(who was assisting Jack with his cards due to his arm being in a sling) Dueling against Trudge in the hospital in a Ground Duel while Trudge was a Shadow Drone.

In episode 59, this card appears in a flashback Carly has when she remembers all of the great moments she had with Jack. Remembering this allowed Carly to regain her senses and choose the "Changing Destiny" effect that would make the Duel continue instead of making the Duel end in her victory.

In episode 84, Jack used this card during his Turbo Duel against the Fake Jack Atlas. After Jack activates "Assault Spirits" and equips it onto "Red Dragon Archfiend", he uses the effect of "Assault Spirits" to send this card from his hand to the Graveyard in order to increase the ATK of "Red Dragon Archfiend" by this card's ATK until the End Phase. This made the ATK of "Red Dragon Archfiend" the same as the fake's "Red Dragon Archfiend" when the two monsters battled. The attack would normally end in a Double KO, but Jack uses the effect of "Trust Guardian" to reduce the ATK of his "Red Dragon Archfiend" by 400 at the end of the Damage Step to prevent it from being destroyed, therefore only the fake's "Red Dragon Archfiend" is destroyed. At the End Phase, the effect of "Assault Spirits" wears off, reducing the ATK of "Red Dragon Archfiend" to 2200.

Card Appearances:Twin-Shield Defender