Ata is a dark-skinned adult man white hair with two damaged horns on his head. He has one dead eye, and wears a mask that conceals his mouth and chin. His attire consists of a sleeveless purple vest resembling a haori tied together by an armor plate covering his chest along with dark baggy pants and sandals. He also carries four average katanas on his person.
Ata is a bloodthirsty and selfish samurai who abandoned his princess and betrayed Daruma. He seeks nothing but destruction and is focused on his mission. In combat, he is ruthless towards his enemies, brutally slaughtering all the samurai aboard the Karuraten. He also demonstrates some tactical cunning; during his attack at Akagi, he sends a robot replica in his place. This proved to be prudent, as he would have otherwise been slain by Daruma
Despite his destructive tendencies, he does have a sense of honor. He politely greets Daruma upon reuniting, and respectfully bows and asks for forgiveness over abandoning his responsibilities. Additionally, he believes that, above all else, a samurai should be courageous and strong, and he looks down at those who do not, deeming them samurai only in appearance but not in spirit. He is able to recognize when an opponent is improving.
When Niri found the location of the eighth child, she instructed Ata to capture him. As Niri gave the coordinates, Ata inputted them and created a copy of himself uses part of his Samurai Soul and sent it towards the eighth child. As Ata was flying towards his destination, he passed some meteorite clouds, slashing them with ease for a shortcut. Reaching the planets coordinates, Ata struck the planet's moon with Silent Slash, deciding to use it to aid in the elimination of the planet.
Immediately after that, Ata was confronted by Karuraten, the Garuda holder of Mujin, the protector of the planet. Ata quickly recognized Mujin and engaged him in battle. In the end,, Ata had killed all the samurai who were on Karuraten and was finishing off Mujin. After destroying Mujin's Locker Ball, he went back to going after Hachimaru. Upon locating the coordinates, he launched an attack that was intercepted by Daruma, who was immobilized by the attack and greeted Dr. Furuta, asking him about Hachikaku. After Daruma explained who Ata was, Ata realized he was in the presence of his old master and expressed respect towards him. In that moment, the Bloodsucker fell off from Daruma's body and Ata quickly took it, claiming it belonged to Ususama school. Ata then bowed down and apologized for Princess Baku, which brought painful memories to Daruma.
When Hachimaru spoke casually to Daruma, he got angry and scolded him for talking to his teacher that way, then recognized his target by his resemblance to the "the Seven". As Ata was heading towards Hachimaru, he scolds him for having lofty dreams while still being weak, he effortlessly stops an attack from Hagamichi and turns his attention to Furuta. When Ata struck with his blade, Furuta activated his secret weapon, which Ata recognizes as an unfinished device meant to destroy Samurai Souls. The device stopped his attack, Ata was partially consumed by it before it gave out. He recovers and attempts to defeat and retrieve Hachimaru. Hachimaru, however, eventually finds his resolve and fights back long enough for Daruma to recover and counterattack. Ata is quickly pushed back, then defeated by Daruma's star-destroying move, Kongo-Yasha Style: Atmos Fangs.
Before Ata's Soul dissipates, it forms a monitor that the real Ata uses to communicate with everyone present. He states his intention of retrieving Hachimaru personally the next time they meet. He then reveals that Hachimaru has siblings and lets one of them explain the rest Once the explanations are over, Ata bids farewell and mention a parting gift left behind. Later, Ata informs Niri about Daruma's interference, while using Ikkaku to track Hachimaru's gravity. He interrupted by a message from his master, Kala. After being ordered to go after Hachimaru, he mobilizes his Holder for their journey.
Abilities and Powers
Ata is an elite samurai, having earned the title of "Ata the Peerless." Fitting his title, he is nearly unstoppable in battle, easily defeating Mujin and all the samurai on the Karuraten without taking any noticeable damage, and it required the combined efforts of Daruma, Furuta, and Hachimaru to defeat even a replica of himself.  His ability was great enough that he was made Kala's right-hand man, and through this became strong enough to destroy planets himself. 
- Samurai Gravity: Ata has a limited degree of control over the molecules that form matter and the gravity H-Particles emit. His power to reshape matter and gravity at will allows for the use of generic samurai abilities.
- Healing Factor: Ata's body can repair itself from any injury.
- Holder Control: Ata is able to reshape the body of his Holder into various forms.
- Gravitational Pull: Like all samurai, Ata has a gravity that can inadvertently draw other samurai keys to him. This can also works in reverse, leading him to other samurai.
Currently, Ata has an active Trinity.
- Kongo-Yasha School
- Ususama School
- Samurai Soul Blade: Ata possesses a Samurai Soul, an orb of energy that - when fused with a Handle Bone from a Holder - can turn into an energy blade stronger than any metal blade.
- Katana: Ata carries four katanas as secondary/support weapons.
Daruma was Ata's former teacher. Ata still deeply respects Daruma and tries to beg for forgiveness and understanding of his actions, going so far as to bow before him. Daruma, however, finds Ata highly unforgivable and has nothing but anger to give in return.
Ata recognizes Daruma as a major threat to his plans and immediately renders Daruma temporarily unable to battle when he confronts him and Hachimaru. Ata apparently underestimated Daruma's willingness to fight him, as he was shocked to see Daruma use the Star Crusher.
As an unplanned eighth artificial Samurai, Hachimaru - referred to as Hachikaku by Ata and his faction - weakens the effectiveness of the seven intended artificial samurai of the Spare Key Project This puts Hachimaru at odds with Ata's faction, who need to retrieve Hachimaru's key to advance their plans. Upon Hachimaru's activation of his powers, he is immediately detected and Ata travels to retrieve him.
Ata holds Hachimaru in disdain. He does not find Hachimaru worthy of being a samurai, thinking he lacks strength and courage. Rather, he views Hachimaru as a boy in love with the status and privilege that comes with being a samurai. He has no issue with the need to destroy Hachimaru to achieve his goals.
- Ata name can be based in Āṭavaka(Sanskrit; Pali: Ālavaka), a popular figure in Buddhism. He is a Yakṣa (Yasha) and regarded as a Wisdom King in esoteric tradition.
- Āṭavaka in Japan is know by the follow names:
- Ata alias: Ata the Peerless Strength is based in one of Āṭavaka japanese names: Yasha the Peerless Strength.