Reisi Munakata’s personal life remains largely enigmatic, and few individuals are aware of how he spends his time outside of his duties as the Blue King. He inherited the title in the summer of 2010 at the age of 21, during an incident in which an aircraft suffered engine failure. Aboard the plane alongside Seri Awashima, Munakata manifested his powers for the first time, freezing space to prevent the crash and saving all passengers.

Munakata was raised by kind and modest parents and has an older brother, Taishi Munakata, described as good-hearted though somewhat naive. Despite his family’s ordinariness, Reisi stood out from a young age for his intelligence and extraordinary achievements, to the point that even his teachers were unsettled by his ability to out-argue them in class. While considered eccentric, he was not ostracized by his family, who treated him with affection rather than reverence. Supplementary materials further reveal that he studied abroad after being awarded a government grant.

Following his ascension as King, Munakata became Captain of Scepter 4, where he enforced order and stability as the Blue Clan’s leader. During a case involving a horse Strain, Munakata was observed by Anna Kushina while Mikoto Suoh attempted to control the Strain. Though aware of HOMRA’s involvement, Munakata chose not to escalate the matter, remarking that he would not quarrel with the Red King over trivial issues.

Munakata’s sense of duty extended to encounters outside of traditional conflicts. On one occasion, he discovered an abandoned Strain infant near Scepter 4’s gates and temporarily took the child in, unsettling his subordinates. He later discussed measures with the Gold Clan regarding restraints to suppress the child’s powers, before reuniting the infant with his mother. His words during the event demonstrated an awareness of Saruhiko Fushimi’s troubled family history, suggesting his sensitivity toward his subordinates’ pasts despite his otherwise aloof attitude.

After Anna Kushina succeeded as the Red King, Munakata introduced his subordinates to his own family, revealing a surprisingly ordinary household that ran a gardening and landscaping business. The visit surprised both Awashima and Fushimi, who had previously assumed little about Munakata’s personal background.

Accounts of his childhood, later shared with his lieutenants, further illustrate his precocious intelligence. As a student, Munakata excelled at nearly everything, and his tendency to challenge teachers with unshakable logic intimidated several instructors to the point of resignation.

Reisi Munakata is depicted as a tall, broad-shouldered man with a strong build. He has dark blue-black hair, parted to the left with slightly messy strands framing his face, and striking purple eyes. He is typically seen wearing frameless rectangular glasses, which complement his refined and authoritative presence. His posture and disciplined bearing lend him an imposing, military-like aura that makes him appear even taller.

As Captain of Scepter 4, Munakata wears an elaborate variation of the clan’s standard uniform. His attire includes a high-collared, long-sleeved dark blue trench coat, left unzipped from the waist down and secured at the midsection by a black belt with a gold buckle. Beneath the coat, he wears a white shirt with an upturned collar, a decorative cravat, dark blue trousers, and knee-high black boots reinforced with silver frames.

In more casual settings, Munakata dresses with understated elegance, often wearing a black turtleneck beneath a gray buttoned jacket, paired with black trousers. His casual attire is accessorized with keys attached to his belt, and he typically wears brown mountain shoes. Regardless of his clothing, Munakata is consistently portrayed as dignified and sophisticated.

Reisi Munakata is portrayed as a calm, refined, and calculating leader, known for his sophistication and sense of composure even under extreme pressure. As the Blue King and Captain of Scepter 4, he values order and negotiation over brute force, though he is capable of decisive and ruthless action when necessary. He prioritizes the safety of civilians and his subordinates, often placing their well-being above his own, while simultaneously holding his men to strict standards of discipline.

Munakata demonstrates strong will and resolve, preferring to confront challenges directly. He disdains avoidance or compromise, as seen in his rejection of Yashiro Isana’s offer to share responsibility for the Dresden Slate, and in his confrontations with the Gray King. Though rarely angered, his controlled temperament makes him intimidating when provoked.

He is punctilious in choosing his Clansmen, personally recruiting members such as Saruhiko Fushimi, whom he valued both for his hidden weapon skills and, arguably, to shield him from the Green King’s influence. While Munakata is capable of harsh judgment expelling individuals he deems unfit, such as those involved in Anna Kushina’s torture he balances this with a sense of justice, refusing to tolerate cruelty or dishonor within his ranks.

Munakata’s relationships highlight his dual nature as both commander and caretaker. He treats Seri Awashima with consistent professionalism, while showing a more paternal, almost teasing side toward Fushimi, in whom he invests particular trust. Despite their antagonism, he acknowledges Mikoto Suoh as both rival and former friend, and is deeply affected by Suoh’s eventual death at his hands. His protective instincts extend to Anna Kushina, whom he saves from JUNGLE and allows to address him by his first name, signifying a rare closeness.

Beyond his duties, Munakata exhibits refined personal interests, including solving puzzles, practicing tea ceremony, and occasional smoking. He is also known for his playful, mischievous humor and his unnerving habit of startling others with unexpected remarks or behavior, maintaining a perfectly calm demeanor regardless of the situation. His eccentricities such as bringing a Strain infant into Scepter 4 headquarters or teasing his subordinates reveal a childlike and mischievous side that contrasts with his otherwise formal persona.

Despite his outward confidence, Munakata carries profound guilt following Mikoto Suoh’s death, an event that left him visibly burdened. Nevertheless, he remains steadfast in his responsibilities, balancing his sense of honor with his pragmatic leadership. His complex blend of formality, compassion, and unpredictability makes him one of the most enigmatic and multifaceted Kings.

Blue Aura
As the Blue King, Munakata commands the power of the Blue Aura, which is primarily defensive in nature. It can shield both himself and his subordinates from immense attacks, including the destructive flames of Mikoto Suoh, the Red King and one of the most formidable combatants among the clans.

Master Swordsman
Munakata is highly skilled with a saber, demonstrating precision, speed, and efficiency in combat. His swordsmanship forms the core of his offensive capabilities.

Expert Hand-to-Hand Combatant
Even without drawing his blade, Munakata is capable of overwhelming experienced opponents. He has shown the ability to easily outmaneuver and defeat Kuroh Yatogami in close combat.

Strong Will and Determination
Munakata exhibits remarkable mental fortitude, refusing to retreat even in dire circumstances. After being forced to kill Mikoto Suoh to prevent a Damocles Down, he continued to bear the burden of guilt while maintaining focus as King. Even after suffering defeat at the hands of the Gray King, he confronted JUNGLE operatives with minimal assistance, and during their rematch, fought on despite disadvantage until rallying with his Special Squad to claim victory.

Foresight and Strategy
Munakata is noted for his long-term planning and ability to anticipate failure in seemingly flawless schemes. He recognized weaknesses in the Silver King’s strategy to protect the Dresden Slate, leading him to secretly assign Saruhiko Fushimi to infiltrate JUNGLE as a spy. Anticipating the risks, Munakata took measures to secure Fushimi’s survival, enlisting the help of Misaki Yata and even hiring Douhan Hirasaka to extract him safely.

High-Level Intelligence
Munakata’s intellect is described as extraordinary, capable of producing immediate solutions to complex problems without apparent deliberation. His analytical skills make him one of the most formidable strategists among the Kings.

Illusion Breaking
His Aura has the ability to dismantle and negate illusions, as demonstrated when he effortlessly dispelled one of Neko’s most powerful illusions strong enough to deceive Blue Clansmen led by Seri Awashima, as well as Kuroh Yatogami and Yashiro Isana.

Force Field Manipulation
Munakata can manifest his Aura into solid constructs, such as barriers for defense or platforms that serve as stepping stones, granting him enhanced mobility and protection in combat.

Sirius (天狼, Tenrō)
Munakata wields a distinctive saber as his primary weapon. The hilt is primarily golden, with a streak of blue near the tip, and is capped with a sphere that glows green when the blade is about to be drawn. The glow functions as a release mechanism for the weapon, disengaging the lock on the hilt. The accompanying sheath is dark blue, decorated with several golden straps, and is designed both for protection and to complement his Scepter 4 uniform.