Halldor's Decks

Turbo
Halldor uses a "Nordic Ascendant" Deck focused around his "Odin, Father of the Aesir". He uses a large amount of Trap Cards and various Lockdown strategies to defeat his opponents.

Trivia

 * Halldor's Special Summoning of "Nordic Wicked Dragon Jörmungandr" and "Nordic Wicked Wolf Fenrir" to Yusei's side of the field only for Yusei to use them to Summon "Shooting Star Dragon" and beat Halldor is highly ironic, due to the fact that, in Norse Mythology, these beasts were foretold to kill Thor and Odin, respectively. The two are in fact the children of Loki.
 * Halldor fights for the Swedish airforce in episode 123. The fighterplane in the hangar has the Swedish airforce emblem on it, so it can be concluded that his home country is Sweden.
 * The cards "Birthright" and "Soul Resurrection" can be seen in his hand during his duel with Yusei, cards that benefit Normal Monsters, though no Normal Monsters are known to be in his Deck.