Kubrik Clan

The Kubrik Clan is a 900 years old clan, who practices on itself for centuries now Selective breeding.

Overview
The Kubrik Clan is considered one the greatest of taboos by the World Government, much like Humen the world government does not allow any knowledge of the Kubrik Clan to come out.

Controversially the Kubrik Clan is the only clan in the world to select their members on natural abilities alone to the extent they pull off. Every new generation will be tested (and die) and those that are born ill will be sent to orphanages instantly.

Newcomers to the clan are allowed on the basis that they are born with superhuman qualities, and thus their genes are ideal for breeding. It's a known fact that some other Races in the world of One Piece are sometimes inserted for their genetic material.

With the passing of 900 years every member of the Kubrik Clan known to date is born with a full set of superhuman attributes and their offsprings are assured them too.

History
The Kubrik Clan is over 900 years old and was created by a man named Kubrik around the void century. It is unknown what happened on that time but something forced Kubrik to hypnotizing people into forming the Kubrik Clan.

Over the years the Kubrik Clan grew self sufficient and all the new members were taught the reason for their birth and what they must do for the clan.

Abilities
Everyone in the Kubrik Clan as of the present time is born with superhuman strength, endurance, strength, intelligence, senses, reflexes as well as a seemingly natural talent towards wielding most forms of weaponry.

They are also doted with an enhanced immune system and have genes encoding for curing most poisons in the world. Their vocal skills is various degrees higher then those of a ormal human, and they all have Tetrachromacy, which allows them to see far beyond what normal people can.

Kubrik are capable speakers, great politicians and can master languages incredibly fast, their prowess at mathematics beats virtually all others, and their lifespan is well into the 110 years.

Weaknesses
The Kubrik Clan however has one slight problem, at some point int he development stage of their childhood the ideals of the Kubrik Clan override their personality and all members of the Kubrik Clan lose all purpose and will.

Members of the Kubrik Clan cannot harness haki, and hardly can make decisions for themselves instead do everything for the sake of their Clan.

Members
Because of the selective breeding that happens between every generation and the number of children that are sent to orphanages or downright don't survive the tests the number of members of the Kubrik Clan is roughly below 50.