Kū

is a shinobi from Iwagakure.

Personality
A mysterious man, he is very ambitious and treacherous as he desires to overthrow the Fourth Tsuchikage and reshape the world in his own vision of "peace". He is shown fiercely loyal to his goal, growing irritable if things get out of hand, striking down one of his Akuta out of anger.

Appearance
Like important Iwa figures, Kū dresses in a green and red robe. He has shaggy brown hair reaching below his chin and covers his left eye. Like his father, he has a broad face with a large nose and thick eyebrows. Underneath, he wears a green flack jacket.

Abilities
Trained by his teacher and father, the Third Tsuchikage, Kū is shown to be a very capable ninja, enough to face the Fourth Tsuchikage one-on-one. He also a skilled leader, proving to be very methodical and problematic as can effectively read the situation to decide how to act.

Nature Transformation
Like his father, Kū is highly proficient in the advanced nature transformation of Dust Release, which is a simultaneous usage of Earth, Fire, and Wind Release. With it, he can use the Dust Release: Detachment of the Primitive World Technique to disintegrate his targets. With the Earth Release alone, he can use the Earth Release: Light-Weight Rock Technique to grant himself flight to move about as he pleases. He is also able to use an Iwagakure kinjutsu, Akuta, to create golems made from stone.

Physical Prowess
While mostly a schemer who operates from behind the scene, Kū is more than proficient in direct combat. Against Kurotsuchi, he showed noticeable taijutsu prowess, able to calmly defended himself from her attacks and likewise proficient in take-downs and body holds. He also is skilled in kenjutsu wielding a large cleaver-like blade with which he can strike down multiple targets with a single strike. He has considerable raw strength, able to strike a target as large as Akatsuchi through the air with enough force to shatter a massive stone column. He has blazing speed, able to quickly catch Boruto off-guard before subduing him.

Mitsuki's Disappearance Arc
Kū met with Kirara and Kakō in what appears to be some type of research facility for the production of Akuta. Later, feeling that his preparations were complete, Kū, Kakō, and some of his artificial soldiers successfully attacked and abducted Kurotsuchi. Later, when Akatsuchi and five Konoha genin came to Ōnoki for help in finding their lost ally Mitsuki, Kū surrounded them with his Akuta. He then revealed to the captured foes that he was, in fact, Ōnoki's son and working in league with the former Tsuchikage.

When Boruto confronted the Third Tsuchikage about this, Kū quickly subdued him. The old man then explain the nature behind his goal and voiced his desire not to hurt anyone, the genin made their move to escape. Kū quickly engaged in the fight, facing off against Akatsuchi. The fight quickly escalating, knocking over a massive column towards Ōnoki, who was narrowly saved by Boruto, who escaped with the elder. An enraged Kū then ordered his Akuta to retrieve Ōnoki.

pt-br:Kū