Kū

Kū (known as Lord Kū) is a villain from the series Boruto: Naruto Next Generations. Kū is the main antagonist of the Mitsuki Disappearance Arc.

Background
After Iwagakure was attacked by rogue ninjas, Ōnoki was emotionally affected by this loss as he witnesses his grandson, Kozuchi, fall. Ōnoki started to work on creating the Akuta. A scientist approaches Ōnoki with a genetic sample from a White Zetsu (previously from the Fourth Great Ninja War). Ōnoki was not only thinking about the Akuta. He also creates 5 artificial human-beings that also included Kū.

Personality
He is very perpetrated to his ambitions and will complete his orders without qualm. He is shown to be loyal to lord Ōnoki. At the same time, he refuses to go against Ōnoki's goal of the least amount of bloodshed possible. Unlike the other artificial humans, Kū is shown more well-adjusted as a human.

Even though he's loyal to Ōnoki, his first and most important concern is the success of Ōnoki's goal for which he was created. Kū then adopted an "ends justify the means" mentality, willing to go against Ōnoki's orders, including a willingness to sacrifice innocent lives, though had no ill-will towards Ōnoki and wishes him to remain safe. At the same time, in learning the potential evolution of his being, Kū became more full of himself, feeling superior to humans and the true future of the Shinobi World.