Germa 66 is one of the strongest military organizations in the One Piece world. In simpler terms, it is the central fighting force of a state—the Germa Kingdom. High-tech armed forces back this army, led by the Vinsmoke Family under their reigning king, Vinsmoke Judge. Germa 66 does both national military expansion and Underworld conflicts.
The group's name is derived from the German word "Krieg," which means war, and the number 66, sometimes attributed to the devil in Japanese culture. This moniker reflects their reputation as a powerful, ominous force within One Piece.
The soldiers are easily recognizable in their usual attire. They wear dark gray suits with an orange "66" on the chest, with a short, white, double-breasted pointed cowl covering the head. The whole design of the uniform was supposed to make them look uniform and mean.
One of the most astonishing things about Germa 66 is its composition. It consists of a vast majority of forces made from clones of some of history's greatest soldiers. These clones are divided into body types that have special characteristics explicitly in higher strength, speed, or durability, making them awesomely successful in combat through scientific skill.
Advanced technology further boosts the military might of the organization. They have a fleet of ships that can be combined to form one ship and snails that help them in conducting telecommunications and even espionage. That is what adds to their notoriety as one of the most feared yet elusive organizations in the world of One Piece.
Historically, it was the ruling Kingdom of Germa in the North Blue region 300 years before the current One Piece timeline. Vinsmoke Judge has grown power-hungry and seeks to re-assert dominance through a campaign to which he refers as the Conquest of the Four Nations. This goal complements the involvement of Germa 66 in various military conflicts and underworld activities.
Within the One Piece narrative, Germa 66 would play the role throughout the Whole Cake Island Arc. They started off as secondary antagonists but later became allies to the Straw Hat Pirates. The main point here is that this change from one extreme to the other is proof of just how dynamic and never simple any political relationship in One Piece can ever be.
The Vinsmoke siblings are the children of Judge and Sora, the late queen, and key individuals in Germa 66. Genetically enhanced beings with superhuman abilities, they also act as commanders of the clone army. Their existence and the power they possess demonstrate the extent to which this organization can succeed and open up ethical issues with respect to genetic manipulation for war.
In addition, Germa 66's activities transcend military operations; they engage in scientific research pertaining to cloning and genetic enhancement. Their focus on scientific development, a characteristic unique to them among the powers in the One Piece world, has set them apart as the most fearsome people.
Influence from this organization does not confine itself to the North Blue. Their involvement in a variety of conflicts and ranking as one of the bigger names in Underworld circles have cemented Germa 66 as a recognizable force globally. That being the case, their actions and the alliances they forge send ripples of shock through One Piece's political sphere.