Ally of Justice

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Ally of Justice
"Ally of Justice Garadholg", "Ally Salvo" (back), "Ally of Justice Clausolas", and "Ally of Justice Nullfier" with the Diablo.
  • A・O・Jアーリー・オブ・ジャスティス
  • A・O・J (base)
  • アーリー・オブ・ジャスティス (ruby)
  • Ārī Obu Jasutisu (romanized)
Traditional Chinese
  • A・O・J
Simplified Chinese
  • A・O・J
  • Allié de la Justice
  • Verbündeter der Gerechtigkeit
  • Alleato delle Giustizia
  • A・O・J
  • Aliado da Justiça
  • Aliado/a de la Justicia
Anime appearances
Manga appearances

"Ally of Justice" (A・O・Jアーリー・オブ・ジャスティス Ārī Obu Jasutisu) is an archetype of DARK Machine monsters used by the Ghost army, Diablo, in Yu-Gi-Oh! 5D's.

Duel Terminal story[edit]

On this distant star, each tribe or clan fights to ultimately reign supreme. For the longest time, the war just waged on, with no one group holding the advantage. However, this battle that no one thought would ever end was suddenly brought to an abrupt halt, as the "Worms", invaders from outer space, suddenly crashed on the planet.

To combat the invaders, the tribes and clans were forced to form a truce and unite together. The four tribes that were the most powerful forces on the continent form their own organization, "Ally of Justice". Bringing together each of their technologies and crafts, they began to develop anti-Worm weapons.

Playing style[edit]

"Ally of Justice" monsters are either empowered during the user's Battle Phase when the opponent controls LIGHT monsters or produce disadvantages for the opponent when playing LIGHT monsters. As an archetype "Ally of Justice" is rather unique, since most archetypes tend to not focus exclusively upon destroying one particular category of opposing monsters.

The most famous card that "Ally of Justice" has to offer is "Ally of Justice Catastor": "Catastor" saw years of competitive and casual play as a fantastic Synchro option. "Catastor" could deal with many boss monsters from the time, as well as being extremely easy to Summon as a generic Synchro Monster. And even nowadays, it is a fantastic option against many monsters in the game. "Ally of Justice Cycle Reader" has also had major success as a counter option against "Lightsworn", "Blue-Eyes" and more recently "Drytron" decks, and is also useful due to being a Tuner monster. "Ally of Justice Quarantine" is a solid counter option against LIGHT decks since it blocks Special Summoning of monsters with that attribute. "Ally of Justice Decisive Armor" is the deck's in-house boss, but is effectively a very large beatstick if the opponent has no LIGHT Monsters on the field.

Within the Speed Duel format, "Ally of Justice Clausolas" is the central monster in "Spell Proof Armor" decks, with "Core Destroyer" featuring as one of the best removal cards available, where "XYZ" is a popular Deck choice and "Kaiser Glider" is feautured in a majority of Decks with relatively little Monster removal available.

"DNA Transplant" can be used to make all opposing monsters to LIGHT to allow "Alliy of Justice" Monsters access to their effects. The deck also synergizes well with "Orcust" cards, with "Crescendo" being able to search any Ally of Justice. "Kaiju" can also replace an opponent's monster with a LIGHT Monster, although both of these are larger than any unboosted "Ally of Justice". The same can be said of the potentially more disruptive "Nibiru, the Primal Being" Another recent option to be combined with "Ally of Justice" are the "Gizmek" cards, with some members being able to be recruited to hand by "Sacred Scrolls of the Gizmek Legend" while the main Gizmek Monsters don't detract from "Ally of Justice's" power.


  • "Allies of Justice" have a hard time against high stat lines, since they don't necessarily pack a lot of destruction effects and might not even reach high enough with "Limiter Removal" involved. They are also slow to gain momentum.

Recommended cards[edit]