List of Kaiji characters
The Kaiji manga series features an extensive cast of characters created by Nobuyuki Fukumoto.
Kaiji Itō
Kaiji Itō is a young gambler who moves to Tokyo after high school, where he spends his days drinking and vandalizing cars. When coerced onto the gambling ship Espoir to settle a coworker's debt, he enters a world of high-stakes gambling. Despite his lazy, self-indulgent nature and lack of life goals—traits that earn him the derogatory label "human scum"—Kaiji demonstrates extraordinary courage and strategic brilliance in life-threatening situations. His gambling addiction dates back to high school, where he frequently arrived late while spending excessive time and money on pachinko and pachislot machines.Kaiji possesses remarkable resilience, described as "a man who can get up at the last minute" and capable of defeating formidable opponents like Tonegawa and Hyōdō. While fiercely loyal to those he trusts, he has suffered repeated betrayals that leave him increasingly cynical. Despite his hardened exterior, he frequently risks personal gain to help others in desperate situations, displaying a paradoxical mix of kindness and naivety.
His gambling prowess earns him legendary status in the underworld, though he consistently finds himself pitted against the Teiai organization. Kaiji recognizes this inescapable connection, yet continues to seek out dangerous games despite the consequences.
Teiai Group
Yūji Endō
Yūji Endō serves as president of Endō Finance, a Teiai Group subsidiary that operates as a predatory lending operation with exorbitant interest rates. He first appears collecting a debt from Kaiji, subsequently luring him onto the gambling ship Espoir. As a member of Tonegawa's faction within Teiai, Endō's position declines following Tonegawa's dismissal. He later sends Kaiji to an underground labor facility per Teiai's strict policies.During Kaiji's battle against the Bog, Endō provides additional loans while secretly planning to exploit their agreement. After their victory, he drugs Kaiji and Sakazaki, then enforces a crushing 30% interest rate compounded every ten minutes. Despite this ruthless action, he shows unexpected restraint by adhering strictly to the contract terms and not confiscating Sakazaki's share. In later events, Endō leads Teiai's manhunt operations as head of the Kaiji-Chang-Mario pursuit team.
The live-action adaptation reimagines the character as Rinko Endō, a female Teiai executive who competes with Tonegawa. After losing this power struggle, she finances Kaiji's E-Card battle with similar loan terms, ultimately leaving the organization with substantial funds following Kaiji's victory.
Yukio Tonegawa
Yukio Tonegawa is a high-ranking Teiai Group executive and Kaiji's primary antagonist in the series' first part. He oversees deadly gambling events, using ruthless rhetoric to manipulate debtors. A cunning strategist, he disdains weakness and remains unmoved by their suffering.Kaiji defeats him in the E-Card game by exploiting his overconfidence, costing Tonegawa his position. As punishment, he endures the Grilling Grovel, lasting an unprecedented 12.47 seconds before being cast out of Teiai. His later fate is unclear.
A prequel spin-off, Mr. Tonegawa: Middle Management Blues, depicts his earlier career comically. In live-action films, he first loses to Kaiji in Kaiji, then betrays him in Kaiji 2 after a temporary alliance, stealing his winnings but leaving a token sum. The films end with Tonegawa watching enviously as Kaiji celebrates with friends.
Kazutaka Hyōdō
Kazutaka Hyōdō is the ruthless chairman of the Teiai Group and the series' primary antagonist. A wealthy and power-hungry businessman, he seeks to build a financial empire that would sustain him even in societal collapse. A sadist, he enjoys manipulating high-stakes gambles and inflicting suffering on debtors, enforcing brutal penalties such as forced labor, mutilation, or death. Despite his cruelty, he occasionally displays fairness and ethical conflict, such as hesitating over exposing his son Kazuya to violent games. Though he admires Kaiji’s defiance, he ultimately views him as inferior and relishes his downfall.Hyōdō first appears in silhouette at the conclusion of the first arc before directly confronting Kaiji in a high-stakes gamble known as the "Tissue Box Lottery", where he asserts his dominance as the undisputed king of Teiai. In later arcs, he and his organization remain persistent obstacles in Kaiji's path. He is married to Sophie, a foreign woman, and has two sons, Kazuki and Kazuya.
Spin-offs depict him as erratic, often berating subordinates like Tonegawa and imposing harsh conditions on workers.
''Gambling Apocalypse: Kaiji'' / ''Kaiji: Ultimate Survivor''
Takeshi Furuhata
Takeshi Furuhata is a debtor and one-time coworker of Kaiji, Furuhata is the one who initiated Kaiji's entry into the underworld. He is timid and easily influenced by others. A debt collector encouraged him to make Kaiji his cosigner and he disappears, but is eventually reunited with Kaiji on the Espoir and they fight through the Restricted Rock-paper-scissors gamble together. Eventually, though Andō incited him to betray Kaiji, both of them are punished by the resurrected Kaiji and lose their surplus stars and money. In the end, he could not pay off the debt and ended up saddled with new debts on the ship. His whereabouts after that are unknown. He is only mentioned once by name in the live-action adaptation.Mamoru Andō
Mamoru Andō is an overweight, glasses-wearing participant in the gambling tournament aboard the Espoir. He initially allies with Kaiji and Furuhata but quickly betrays them for personal gain. During the final stage of the competition, when tasked with rescuing Kaiji as part of their survival strategy, Andō succumbs to greed and convinces Furuhata to abandon their agreement. His attempt to sacrifice Kaiji for financial gain fails when Kaiji escapes independently. Though Andō survives the event, he incurs additional debts from the ship's operations.Kōji Ishida
Kōji Ishida is a deeply indebted middle-aged man characterized by his timid and trusting nature. He joins the Espoir gambling event to repay debts for his wife and son, but is deceived and sent to forced labor. Kaiji, moved by Ishida's genuine concern for his well-being, rescues him.Later, Ishida participates in the Starside Hotel gambling event, winning a ¥10 million voucher in the first Human Derby race. During the perilous Electrified Steel Beam Crossing, his fear paralyzes him, and he entrusts his winnings to Kaiji to settle his family's debts. Choosing silence to avoid distracting Kaiji, he falls to his death—an act that profoundly affects Kaiji, who admires Ishida's dignity and selflessness.
In the live-action adaptation, Ishida allies with Kaiji on the Espoir and defeats Funai, but an extra card results in his consignment to underground labor alongside Kaiji.
Jōji Funai
Jōji Funai is a cunning participant on the Espoir. As a repeat contestant, he uses his experience to manipulate newcomers, notably cheating Kaiji out of two star chips and nearly eliminating him from the competition. Though consistently outmaneuvering other players throughout the event, Funai ultimately miscalculates the game's dynamics. When only Kaiji remains as his opponent, he must accept a high-stakes duel that decides their fates. His ultimate fate after the event remains undisclosed.In the live-action film adaptations, Funai similarly deceives Kaiji during the Restricted Rock-Paper-Scissors game, but loses when Kaiji discovers his cheating method. The sequel depicts Funai working as a surface agent for the underground operations after his Espoir defeat, where he administers the "Princess and the Slave" gambling event. His attempt to exact revenge on Kaiji during this game fails, resulting in his return to forced labor.
Balance Theorist
The Balance Theorist, known as Hyena in the anime series and Sugita in the stage play adaptation, is one of the participants on the Espoir. He targets opponents with few remaining star chips, earning him the derogatory nickname "Hyena" from Kaiji. His method involves carefully managing his remaining cards to maintain balance throughout the game. When challenging Kaiji, who feigns vulnerability with only one star, the Balance Theorist falls victim to Kaiji's counterstrategy that exploits his predictable pattern, resulting in his decisive defeat.Kitami
Kitami is one of the participants on the Espoirs Restricted Rock-Paper-Scissors event. Though inexperienced, he quickly devises card-monopolization tactics, first targeting rock, then paper cards after Kaiji counters him. When Kaiji outmaneuvers him in a decisive match, Kitami's team fractures due to his arrogant demeanor, leading his partners to accept Kaiji's offer to betray him. Forced to pay ¥2 million to exit, Kitami's defeat demonstrates both his adaptability and his ultimate failure to maintain alliances.Okabayashi
Okabayashi is a cynical participant in the Espoir gambling event. He deliberately enters the ship's punishment zone to execute a prearranged scam with accomplices, having redistributed his excessive debts to gain entry. While confined, he mocks Kaiji and Ishida for their faith in altruism, praising instead Andō and Furuhata's pragmatic betrayal as natural survival strategy. Okabayashi escapes by concealing jewelry in a bandage, though Kaiji intercepts and claims these valuables at the last moment. This encounter reinforces Kaiji's realization that survival depends on self-reliance rather than trust.Makoto Sahara
Makoto Sahara is Kaiji's coworker at a part-time job following the Espoir event. He shares Kaiji's lazy tendencies despite aspiring for success. Though typically talkative and carefree, he demonstrates unexpected mental resilience and physical ability during high-stakes competitions.Sahara participates in Teiai's Human Derby gamble at Endō's request, winning the initial race. During the second stage, he overcomes hallucinations and fear to successfully cross the steel beam. However, he dies when struck by an artificially created wind gust, a concealed trap set by the organizers. Teiai officially reports his death as natural causes.
''Tobaku Hakairoku Kaiji'' / ''Kaiji: Against All Rules''
Yoshihiro Kurosaki
Yoshihiro Kurosaki is a high-ranking Teiai Group executive who becomes the organization's second-in-command after Tonegawa's dismissal. Though dismissive of Kaiji as a "stray dog", he acknowledges his gambling skills. Kurosaki demonstrates pragmatic leadership, occasionally showing concern for subordinates while maintaining strict control over Teiai's operations.A family man with a wife and two children, Kurosaki struggles to connect with his introverted family. He dreams of traveling Japan after retirement. Spin-off media portray him as Tonegawa's straightforward rival and depict his occasional interactions with underground workers.
In the Final Game film adaptation, Kurosaki founds Japan's dominant temp agency, Goodwill Industries, before facing Kaiji in Teiai Land's "Last Judgment" game.
Tarō Ōtsuki
Tarō Ōtsuki is the foreman of Squad E in Teiai Group's underground labor camp, where Kaiji is assigned. While presenting himself as a helpful advisor to new prisoners, Ōtsuki secretly exploits them through illicit schemes. He maintains his privileged position by skimming profits from wage advances and luxury goods sales while organizing illegal gambling operations under the guise of stress relief.Ōtsuki orchestrates a rigged Cee-lo game using altered dice that lack low numbers, collaborating with subordinates Isawa and Numakawa to systematically defraud prisoners. His long-term goal involves amassing 20 million perica—the underground currency—to purchase extended surface leave, though his intentions regarding permanent escape remain ambiguous.
Kaiji eventually exposes the scam after deducing the dice manipulation. With support from other prisoners and Teiai executives, he forces Ōtsuki into a high-stakes match using reverse-rigged dice that guarantee massive losses. Defeated and humiliated, Ōtsuki forfeits nearly his entire 17.7 million perica savings and loses his foreman position. Later, while watching Kaiji's televised challenge against the Bog, he angrily denounces him as a cheater.
The prequel spin-off manga 1-nichi Gaishutsuroku Hanchō depicts Ōtsuki's earlier life as a gourmet who frequently uses day passes to enjoy surface-world cuisine.
Kaoru Isawa
Kaoru Isawa, also known as Kensuke Isawa in the live-action films, is Ōtsuki's close aide. He has an oppressive personality and harasses Kaiji and the Forty-fivers so that they cannot have dinner. He sits to Ōtsuki's left and uses the special dice when he and Numakawa work together in the Underground Cee-lo to pull off a 456-dice scam.He also appears in 1-nichi Gaishutsuroku Hanchō, where he is depicted as enjoying going out for the day with Ōtsuki, and his given name is revealed there for the first time. He has a more feeble appearance in the live-action adaptation.
Takuya Numakawa
Takuya Numakawa is Ōtsuki's close aide. He has long swept back hair and a mustache. He has a skeptical nature and is wary of Miyoshi's notes. He cannot use the special dice himself, as he serves the role of replacing them with the normal dice in Underground Cee-lo. As a result, he avoids playing big games with large sums of money and often refuses to play the no-limits games, falsely claiming that he is broke.He also appears in 1-nichi Gaishutsuroku Hanchō, where he is depicted as enjoying going out for the day with Ōtsuki. Like Isawa, his given name is revealed in the spin-off. He also appears as the main character in 1-nichi Koshitsuroku Numakawa, a special one-shot in the first volume of the series.
Tomohiro Miyoshi
Tomohiro Miyoshi is a member of the "Forty-fivers", a group repaying debts through underground labor. His timid nature and gambling addiction lead Kaiji to consider him prone to failure. His meticulous record-keeping of cee-lo games, while personally unproductive, aids Kaiji in uncovering Ōtsuki’s cheating. Miyoshi entrusts Kaiji with his 18 million perica winnings, enabling his escape after Kaiji defeats the Bog.In later events, Miyoshi works at Takashi Muraoka’s casino but accrues new debts. He attempts to deceive Kaiji into a partnership, believing Muraoka’s false claim that Kaiji withheld Bog winnings.
Maeda
Maeda is a worker in group E and a member of the Forty-fivers along with Miyoshi. He is older than Kaiji and more short-tempered, and when he learns of Ōtsuki's cheating, he tries to attack him, but is stopped by Kaiji. He is later released from the underground with the rest of the Forty-fivers.In Tobaku Datenroku Kaiji he works at Takashi Muraoka's casino with Miyoshi, but ends up in huge debts and offers Kaiji to partner up with them in a gamble.
Kitagawa
Kitagawa is a member of the Forty-fivers, a group of indebted laborers. Initially hesitant to join Kaiji's team due to his age, he ultimately participates after being persuaded by Kaiji. Following their victory in the cee-lo match against Ōtsuki, he commends Kaiji's compassionate leadership. His subsequent fate remains undisclosed.Yokoi
Yokoi is one of the Forty-fivers. He has thick lips and was first seen drinking and eating while sitting next to Kaiji during Kaiji's first paycheck. His fate after being freed from the underground is unknown.Hashimoto
Hashimoto is one of the Forty-fivers. His hair is shaved like Maeda's. He was a little hesitant to join Kaiji's team to fight against Ōtsuki because he only contributed 1,300 perica, but Kaiji's words made him determined to join. His fate after being freed from the underground is unknown.Hiromitsu Ishida
Hiromitsu Ishida is the indebted son of Kōji Ishida, consigned to underground labor for his gambling debts. He feigns illness to avoid work and initially resents his father's inability to help him. Kaiji, who witnessed Kōji's death, harshly reprimands Hiromitsu for this attitude. When Hiromitsu fails to fulfill his promise to repay his debts, Kaiji rescues him despite their conflict. Grateful, Hiromitsu vows to reform.In the live-action film version, he was changed to a woman named Hiromi Ishida, a name that belonged to Ishida's wife in the original manga.
Odagiri
Odagiri is the foreman of Squad C in the underground kingdom, and is best friends with Squad B foreman Iwata and Squad A foreman Sakai. In the final battle between Kaiji and Ōtsuki, when Ōtsuki was caught cheating and tried to take away the evidence of the scam from Kaiji, he offered to examine the evidence and was neutral and calm throughout, acknowledging Kaiji's measures in response to the cheating based on the earlier interactions.In 1-nichi Gaishutsuroku Hanchō, he appears as Ōtsuki's rival. He dreams of opening an underground cinema, and earns perica to pay for tablets and movie downloads to screen films underground.
Kōtarō Sakazaki
Kōtarō Sakazaki is Kaiji's collaborator in defeating the Bog. A former construction supervisor, he lost his job during an economic recession and subsequently squandered his savings on gambling, leading to his divorce. Living in poverty, he resolves to win ¥20 million to reunite with his family. Partnering with Kaiji, he succeeds and earns ¥150 million, vowing never to gamble again.In later events, Sakazaki purchases a luxury home and briefly shelters Kaiji before dismissing him with ¥3 million, fearing his daughter Mikoko might develop an attachment to him.
Seiya Ichijō
Seiya Ichijō is the young manager of an underworld casino with an elaborate pachinko machine called "The Bog". Despite his youthful appearance and academic potential, personal circumstances prevented him from attending university, leading him to join the Teiai Group's casino operations. After seven years of service, he rises to become the casino's manager and a potential executive candidate under Kurosaki's mentorship.Ambitious and resentful of former classmates who looked down on him, Ichijō endures Chairman Hyōdō's abuse while aspiring to become a Teiai executive. He demonstrates sharp perception by uncovering Sakazaki's deception and identifying Kaiji's traps that elude other staff members. Though critical of Hyōdō's character, he recognizes the truth in his worldview. After Kaiji defeats The Bog, Hyōdō sentences Ichijō to 1,050 years of underground labor as punishment for the casino's financial losses. As he is taken away, Kaiji challenges him to seek revenge, a promise Ichijō tearfully accepts.
The live-action adaptation expands Ichijō's backstory, revealing he became indebted after being tricked into cosigning a loan. As a survivor of the Brave Men Road gamble, he witnesses friends betraying each other, fostering his distrust of humanity.
''Tobaku Datenroku Kaiji''
Takashi Muraoka
Takashi Muraoka is the president of a Teiai-affiliated underground casino and creator of the unconventional mahjong game "17 Steps". A ruthless pragmatist who values only monetary gain, he operates outside legal boundaries while resenting Teiai's financial demands. Risk-averse by nature, he employs coded signals from subordinates to guarantee victories, yet demonstrates unexpected strategic ability when cornered. Muraoka excels at psychological manipulation, turning Kaiji's allies against him through persuasion. His eventual defeat comes when Kaiji exploits his unwillingness to gamble without absolute advantage. He last appears in a desperate confrontation with his former associates, Miyoshi and Maeda.Mikoko Sakazaki
Mikoko Sakazaki is the daughter of Kōtarō Sakazaki, bearing a strong resemblance to her father. She develops romantic feelings for Kaiji, expressing them through overt gestures such as inviting him out or resting on his lap. During Kaiji's stay with the Sakazaki family, she occasionally provides him small sums of money, which he squanders on pachinko. Her latest appearance features her creating Ikaji, a manga loosely based on her relationship with Kaiji, demonstrating her understanding of his irresponsible nature while remaining oblivious to his true feelings.Kazuya Hyōdō
Kazuya Hyōdō is the second son of Teiai Group chairman Kazutaka Hyōdō. Known as "young master" within Teiai circles, his mixed heritage gives him a distinctive appearance with brown hair and sunglasses. While inheriting some of his father's sadistic tendencies, he demonstrates more complex personality traits, including a surprising capacity for fair judgment during games.During the 17 Steps gambling event, he loans money to Kaiji while threatening severe consequences for non-payment, yet shows genuine admiration for Kaiji's strategies. His privileged upbringing has left him deeply cynical about human relationships, believing most people befriend him only for his family's status. This worldview leads him to create "Kazuya Produce", a series of lethal gambling scenarios designed to test human bonds, with outcomes serving as inspiration for his aspiring writing career.
His final appearance involves a high-stakes One Poker match against Kaiji, where he suffers defeat but survives the encounter.