Osomatsu Matsuno is the eldest of the Matsuno sextuplets in the anime series Osomatsu-san. Known for his carefree and somewhat irresponsible personality, Osomatsu often leads his brothers into various misadventures. Despite his lazy demeanor, he possesses a playful and mischievous charm that makes him endearing. Osomatsu's character often reflects the show's comedic nature, focusing on themes of adulthood and family dynamics. As the leader of his siblings, he often takes charge, though his decisions are not always the most well-thought-out, adding humor and unpredictability to the series.