Card Appearances:Gjallarhorn
- In episode 128, Halldor uses this card during his Turbo Duel against Yusei Fudo. He sets it face-down. Later Halldor activates the effect of "Odin, Father of the Aesir" to make the Aesirs unaffected by Spells and Traps for one turn in order to make them immune to the effects of "Monster Chain", but Yusei Tributes "Majestic Star Dragon" to negate the effects of "Odin" and destroy all cards Halldor controls. On the End Phase, Halldor activates the last effects of the Aesirs to revive them, but Yusei activates "Wave Rebound" to negate the summons and inflict damage to Halldor equal to the ATK of the Aesirs, however Halldor activates the effect of this card from his Graveyard, returning it from his Graveyard to his Spell and Trap Card Zone and activating it. In the next episode, Halldor explains that due to this card's effect, the Special Summoning effects of the Aesirs can't be negated this turn, so "Wave Rebound" is wasted. In addition to this, Halldor explains that this card's last effect will activate after three turns. When this effect activates, this card and all monsters Halldor controls will be banished and Yusei will take damage equal to the combined ATK of those monsters which will deplete the remainder of Yusei's Life Points. With the Aesirs now revived, their secondary last effects activate. "Thor, Lord of the Aesir" inflicts 800 damage to Yusei, "Loki, Lord of the Aesir" allows Halldor to add "Odin's Eye" from his Graveyard to his hand, and "Odin, Father of the Aesir" allows Halldor to draw one card. On the final End Phase of the Duel, this card's last effect activates, banishing itself and the three Aesirs from the field and inflicting the combined ATK of the Aesirs as damage to Yusei, however due to the Aesirs having 0 ATK (due to them being affected by Yusei's "Zero Force") when they were banished, Yusei takes no damage. Since the Aesirs were banished, Halldor could no longer revive them through their own effects.
