Masamune Date is a comedic soldier of fortune whose eccentric personality centers on an intense fascination with eyepatches. He collects absurd and elaborate designs, reacting with deep distress or heroic despair when they are criticized, his face comically transforming into that of an ugly old man. His behavior is childish and showy, earning him comparisons to a middle school student from his exasperated retainers, Katakura Kagetsuna and Date Shigezane, who treat his antics with weary tolerance. He possesses absolute confidence in his swordsmanship and desires a troubled world to conquer through battle. His actions are often absurd and anachronistic, exemplified by his creation of "Guntain," a humongous mecha anime series parodying Gundam.