Born from melon bread infused with love flower nectar, Melonpanna lives as a heroic defender of justice. Her physical form showcases a melon bread head paired with a dark green uniform, light green belt, gloves, and boots. A striking cape—green on top and orange underneath—flows behind her, while a cursive "m" insignia marks both her chest and dress. Fundamentally gentle, kind-hearted, and sensitive, she interacts with honesty and cleverness. Despite wielding super strength, she avoids confrontation unless essential, favoring compassion over aggression. Emotional vulnerability surfaces in distress, such as visible fear triggered by encounters with the bandage-wrapping entity Houtaiman. Her abilities include flight—common among bread-based heroes—and two signature techniques: The "Melo-Melo Punch" pacifies foes by inducing temporary dizziness or affectionate paralysis, or awakens those in deep slumber. She also secretes "Melo-Melo Juice" from her head; these droplets cleanse allies afflicted by darkening attacks, though efficacy lessens if the victim’s inherent goodness falters. Key relationships shape her existence. She shares a sisterly bond with Anpanman, who mentors her growth. Her biological sister, Rollpanna, embodies both deep connection and psychological fragility; rare meetings spur loneliness, and Rollpanna’s activated "blue heart" (manifesting evil influence) threatens Melonpanna’s sense of self. Yet Melonpanna uniquely calms Rollpanna during instability. She also nurtures Creampanda, a non-biological sibling, with protective, brotherly affection. Her weaknesses include physiological reliance on melon juice for energy—depletion causes fainting—and psychological fragility when Rollpanna’s evil heart dominates, risking identity loss. Debuting in episode 200 ("Melonpanna is Born"), she appears consistently across television episodes, films, and educational specials. Her narrative underscores themes of familial bonds and resilience, highlighted through her evolving ties to Rollpanna and her patrols and deliveries alongside Anpanman.