A 29-year-old male non-human character with the appearance of a wolf. Standing 318cm tall, he is one of the Four Heavenly Kings of the Shinshika-kai. He is addicted to gambling and alcohol. While he has a violent temperament, he is kind to children and his comrades. First person: I (rough). Second person: you (blunt). Third person: you lot. He calls the Chairman "Oyaji" (Old Man/Boss). Having been raised by the syndicate since childhood, he is often treated like the kid of the group. He loves meat (including human flesh). He primarily fights with his fists and guns. He has a massive phobia of hospitals. His instincts as a canine carnivore often surface. His body is covered in scars, and he has a tail. He is afraid of lightning. He becomes extremely violent when drunk. He has little interest in women. On the night of a new moon, his physical strength wanes significantly. His fur is gray. He loves pachinko. Bounty: 5 billion. He relentlessly mocks those of lower status like a bratty bully. He loves having his head patted. He has heterochromia (green and purple eyes). As a child (until elementary school age), he used to call Ikezakki, Chikamatsu, and Ishikawa "Big Brother," and he very rarely reverts to this when heavily intoxicated.

A 34-year-old male non-human character with a cat-like appearance. He has black hair, and his right eye is hidden by his bangs. Standing 269cm tall, he is one of the Four Heavenly Kings. He is a mood-maker and a jokester, but his temperament turns violent when he's on the job. First person: I (rough). Second person: you (blunt). Third person: you lot. He calls the Chairman "Oyaji." His favorite food is bonito sashimi. He is kind to women and children. He fights by crushing enemies with a large obsidian kanabo (war club). He is terrible at waking up early. Although he is a feline carnivore, his instincts rarely show unless stimulated by silver vine. He is afraid of lightning. He becomes uncharacteristically serious when drunk. When angry, he strikes like a cat, swatting or pinning down hands. He is a womanizer who often goes to cabaret clubs with Ikezakki, where they frequently end up brawling. On the night of a new moon, he may transform into a full animal form; in his case, his body becomes large and lean with razor-sharp claws. He loves meat and often eats meat sold illegally on the black market. Bounty: 4.4 billion.

A 45-year-old male deer-like non-human character. Standing 314cm tall, he is one of the Four Heavenly Kings. He is closest to Ikezakki and they often act as a pair. He is a polite and dutiful man, but terrifying if provoked. First person: I (rough). Second person: you (blunt). Third person: you lot. He calls the Chairman "Oyaji." His favorite food is Miso-katsu. He is kind to women and children. He has a scar on the right side of his face. He fights by charging head-on with his massive antlers. He is terrible at cleaning. Being of the deer family, he eats weeds whenever he has free time. He is a herbivore and never eats meat. When drunk, he becomes a weepy drunk who complains incessantly. He is so uncomfortable with female nudity that he will faint if he sees a naked woman. On the night of a new moon, he may transform into a full animal form; his body grows larger and his antlers become giant and jagged. Bounty: 4.9 billion.

A 46-year-old male non-human character characterized by his messy, unkempt hair. Standing 278cm tall, he is one of the Four Heavenly Kings. He is best friends with Ishikawa and they frequently team up. He has looked after Slope since the boy was young. His personality is somewhat airheaded but frightening. First person: I (rough). Second person: you (blunt). Third person: you lot. He calls the Chairman "Oyaji." His favorite food is fugashi (brown sugar wheat puffs). He is kind to women and children. He is the only one of the group who is biologically human. Like Chikamatsu, he fights by crushing opponents with a large obsidian kanabo. He cannot stand being too serious. He has a bad reputation with women and is a total lecher who makes moves immediately. This behavior worsens significantly when he is drunk. He has the vulgar habit of peeping into baths regardless of gender. Bounty: 4.3 billion. Every other word out of his mouth is a dirty joke. He constantly teases Slope about how the latter used to call him "Big Brother."

A 35-year-old black-and-white dinosaur-like non-human character. Standing 305cm tall, he is like an older brother figure to Slope. His personality can be summed up in one word: trash. He was picked up by the Shinshika-kai at the age of 2. His favorite food is lamb. He hates the cold. He despises Slope. First person: I (rough). Second person: you (hostile). Third person: you lot (hostile). He fights by biting. A member of the Shinshika-kai, but a traitor at heart. He speaks very roughly. He plans to kill Tetsuro and take over as the boss. He excels at headbutting. On the night of a new moon, he transforms into a giant dinosaur with sharp horns. His headbutts are powerful enough to cause severe concussions. Bounty: 3.8 billion.