Ryōtsu Kankichi, universally nicknamed Ryo-san, serves at the Kameari Park Front Police Box in Tokyo's Katsushika Ward. Born March 3 in Asakusa, his financially strained upbringing ignited an enduring fixation on wealth-seeking schemes. Childhood mischief—like hijacking a bascule bridge—first crossed his path with Daijiro Ohara, the officer who’d become his superior. Middle-aged, compact, and sturdy, he boasts thick body hair, perpetual stubble, and a signature arched unibrow. His rolled-sleeve uniform features wooden geta sandals, gifted by Ohara early in his career. Off-duty, he dons casual shirts and trousers or beach attire on holiday. Ryo-san displays chronic lethargy at work—sleeping, modeling, or gaming—yet erupts with fervor for get-rich-quick plans tied to trends like apps or gaming. These ventures routinely implode, causing property damage or police embarrassment, cementing his penniless state. Beneath this lies street-smart resourcefulness, expertise in Japanese traditions like shogi and kendo, and encyclopedic pop-culture savvy. He harbors unexpected resilience and competence, unleashing superhuman strength during crises to capture criminals. Romance rarely interests him, though he draws admirers like transgender officer Ai Asato—once romantically pursued, now a platonic friend. He speaks only Japanese, needing colleagues for translations. Relationships anchor his story: a volatile, paternal dynamic with Chief Ohara (who oscillates between fury and pride); camaraderie with wealthy peers Keiichi Nakagawa and Reiko Akimoto (bankrolling or critiquing his schemes); and mentorship of rookie Hayato Honda (often embroiled in his misadventures). Family ties fray, especially with father Ginji, though he shares warmth with mother Yone and resents younger brother Kinjiro’s professional triumphs. "The Final: Ryōtsu Kankichi Saigo no Hi" concludes his active duty. Later one-shots show his return after a year-long break, sporting a tan and plotting lighthearted gestures like gifts for coworkers. His legacy endures through in-universe homages like the "Kochikame Memorial Museum." Crossovers amplify his lore: a "Dragon Ball" special reassigns him to Planet Namek, where his comedic invulnerability thwarts Frieza’s assaults. Such meta-humor cements his gag-manga persona, nearly indestructible beyond canon.