Kyros

Biodata

Feature	Information
Name	Kyros (居魯士)
Alias(es)	Dressrosa's Strongest Swordsman; Crown Prince of Dressrosa 31 522
Species/Race	Human 32
Gender	Male
Affiliation	Marines; Dawn Sword / New Marines; Dressrosa Royal Army 34 522
Occupation/Role	Former gladiator; Marine Vice Admiral; Commander-in-Chief of Dressrosa's Royal Army 32 522
Status	Unknown; disappeared after intercepting Weevil's attack on Dressrosa 523
First Appearance	Chapter 31

Power Progression

Stage / Realm / Level	Chapter	Notes
Colosseum champion	32	Won his 100-match freedom condition in under half a year, but remained in the arena; later reached 440 consecutive victories.
Marine Private Third Class	50	Entered Marine service with Yoriichi and was assigned to Branch 133 for practical training.
Rokushiki and Haki combatant	160	Demonstrated Soru and Tekkai in a spar with Shimotsuki Koushirou; his combat ability had developed through Marine training, though Koushirou's Armament Haki outmatched him.
Marine Lieutenant	163	Arrived in time to kill the human trafficker Sheep Herder Kappei with one sword strike.
Marine Vice Admiral	274	Held the rank of Vice Admiral while serving with the Dawn Sword branch; later became a high-ranking Vice Admiral of the New Marines. 274 522

Background

At fifteen, Kyros killed the murderer responsible for his best friend's death. He was arrested and also struck King Riku with a blunt weapon before his execution could be carried out. King Riku instead sent him to Dressrosa's Colosseum, promising freedom after 100 victories. Kyros fulfilled that condition in less than half a year, but remained because of his guilt and the public stigma attached to his past. By the time Yoriichi and Kuzan encountered him, he had accumulated 440 consecutive wins. 32 34

Yoriichi sought Kyros out for a private spar after recognizing the practical quality of his swordsmanship. Although Kyros immediately understood the vast gap in their strength, he retained his fighting spirit. He initially refused Yoriichi's invitation to join the Marines because he considered himself a murderer, but Kuzan persuaded him that he could use his strength to protect civilians and fight pirates. Kyros accepted and left the Colosseum behind. 33 34

Appearance

At the time of his Colosseum career, Kyros was a tall, heavily muscled seventeen-year-old, estimated to stand over two meters. His equipment was far plainer than that of his opponents, reflecting his status as a confined gladiator. 32

• Wore tattered cloth clothing with only a lower-body armor skirt in the arena. 32
• Carried a twin-bladed greatsword as a gladiator; later used a Marine greatsword/longsword. 32 159
• Has a small moustache in adulthood. 523
• Wore the Marine Cloak of Justice after joining the service. 154 228

Personality

Kyros is straightforward, earnest, and deeply affected by guilt over his past. He remained in the Colosseum despite earning his freedom because he believed he did not deserve to return to society. His decision to join the Marines stemmed from a desire to turn his strength toward protecting others. 32 34

He is proud but not arrogant. Kyros repeatedly recognizes the limits of his ability—particularly the widening gap between himself and Yoriichi—and resolves to improve rather than resent it. He declined offers of Logia Devil Fruits because he did not want to become unable to swim and believed the fruits would better strengthen the New Marines in another person's hands. 182 253 359

His commitment to justice can make him impulsive. He intervened against corrupt Marines, slave traders, and the planned arrest of pregnant women on Baterilla Island, but his encounter with Saint Mjosgard exposed his difficulty reconciling Marine duty with the World Government's abuses. 54 61 204 236

Abilities & Skills

Swordsmanship

Kyros is a battle-hardened swordsman whose style was forged through hundreds of real Colosseum matches rather than formal dojo training.

• Defeated the Berserk Sea Bear, an armored five-meter gladiator, in a single blow. 32
• His combat style emphasizes refined, practical movements developed through fighting “in mud and blood.” 159
• Killed Sheep Herder Kappei with one thrust after Kappei captured Bell-mère. 163
• Could suppress groups of pirates while defending himself, though strong executives and Lou Winter were able to injure him. 182
• Was outmatched by Issho's Gravity-Gravity Fruit and by Shimotsuki Koushirou's Haki-enhanced counterattacks. 149 160

Haki

Kyros possesses both Observation Haki and Armament Haki.

• Used Observation Haki to detect Doflamingo's nearly transparent threads before they struck him. 331
• Infuses his sword with Armament Haki in combat. 331
• His Armament Haki and Tekkai enabled him to endure multiple injuries while fighting the Giant Soldier Pirates. 182
• The clash between Roger and Yoriichi's Conqueror's Haki severely affected him, leaving him exhausted and barely conscious. 190

Marine Six Styles

Kyros incorporated Marine techniques into his swordsman-focused combat style.

• Uses Soru for high-speed movement and evasive maneuvers. 160 182
• Uses Tekkai to harden his body against attacks. 160 182
• Uses Moonwalk to pursue enemies and fight above the sea. 149 522

Investigation and Command

Kyros grew into a capable Marine investigator and local commander.

• Investigated the Emerald Peak Duchy case and uncovered Viscount Wenbulai's crimes, helping clear Issho's name. 152
• Led port patrols in Dressrosa, reviewed incoming-ship records, and prioritized anti-smuggling and maritime security. 522
• Recognized the danger of corruption among low-ranking Marines because he had risen through the ranks himself. 522

Equipment / Weapons / Items

• Twin-bladed Greatsword — His primary weapon during his Colosseum career. 32
• Marine greatsword/longsword — His standard weapon as a Marine officer. 159 331
• Marine Cloak of Justice — Worn during his service; Kyros once used it to cover Fisher Tiger's Fish-Man features after rescuing him. 228

Relationships

• Tsugikuni Yoriichi — Recruiter, commander, and mentor. Yoriichi admired Kyros's swordsmanship, brought him into the Marines, and consistently supported his decisions made in the name of justice. 33 34 200 204
• Kuzan — Fellow Marine who persuaded Kyros to accept the Marines' invitation and helped him adjust after leaving the Colosseum. 34 35
• King Riku — Former judge and later father-in-law. Riku spared Kyros's life, gave him the Colosseum's 100-victory condition, and eventually accepted him as Scarlet's husband. 32 273
• Scarlet — Wife. Their wedding was intentionally modest, with Kyros prioritizing the development of the Dawn Sword branch over extravagance. 274
• Rebecca — Daughter. Kyros remained in Dressrosa rather than travel to Thunder God Island because she was too young for such an environment. 328
• Issho — Fellow Marine and respected comrade. Kyros initially attempted to arrest Issho, later investigated the case surrounding him, and came to admire his strength. 149 152
• Fisher Tiger — Fish-Man Kyros rescued from pirates. Kyros treated him with compassion despite Tiger's distrust of humans and personally covered him with his cloak. 228
• Shimotsuki Koushirou — Sparring opponent and fellow Marine associate. Their match exposed Kyros's practical battlefield style and Koushirou's superior Haki-based technique. 159 160

Story Role / Major Arcs

Dressrosa Colosseum and Marine Recruitment

Kyros was introduced as Dressrosa's most popular gladiator, holding 440 consecutive victories. After sparring Yoriichi, he accepted Kuzan's appeal to become a Marine and seek redemption through protecting others. 31 33 34

Marine Academy and Branch 133 Incident

As a new Marine, Kyros was manipulated by fellow trainees into challenging Yoriichi, then joined him on practical assignment at Branch 133. When corrupt Marines massacred their comrades and attempted to frame him, Kyros fought back in self-defense and killed Fabrice Simich's squad. 46 50 54

Justice and the Dawn Sword

Kyros fought beside Kuzan and Yoriichi against a slave auction, investigated Issho's alleged crimes, and helped establish the Marine presence in Dressrosa. He defended his hometown from the Giant Soldier Pirates, but the encounter reminded him how far behind Yoriichi he remained. 61 149 152 179 182

Baterilla Island

Kyros defied the operation to arrest pregnant women during the search for Roger's child, releasing a woman targeted by the Marines. Yoriichi backed his decision, reinforcing Kyros's resolve to act according to his own understanding of justice. 200 204 205

Family and Dressrosa Leadership

Kyros married Scarlet and became a trusted figure in Dressrosa, eventually serving as Crown Prince, Royal Army Commander-in-Chief, and a New Marines Vice Admiral. His loyalty to King Riku and concern for his family were exploited during Doflamingo's attack on Dressrosa. 274 331 522

Defense Against Weevil

While personally patrolling Dressrosa's harbor, Kyros detected an infiltrating pirate ship and intercepted Weevil before the pirates could land. He disappeared after standing against Weevil's destructive slash, leaving his fate unknown. 522 523

Notable Quotes

“You scoundrels! You don't deserve to be Marines!” 54

“Vice Admiral, you were the one who brought me to sea. My life and my future are within the Marines.” 209