Melon Panna, a character from *Soreike! Anpanman*, possesses a head made of melon bread. She displays a gentle, caring, and sensitive nature, occasionally demonstrating cleverness. In perilous situations, she typically seeks rescue from Anpanman or others; if immediate aid is unavailable, she calls upon her older sister, Rollpanna. She sometimes spends time with Cheese, the dog living in Uncle Jam's bakery.

Her primary familial connection is her sister, Rollpanna. Rollpanna has two hearts: a red heart for good and a blue heart for evil, the latter influenced by Baikinman. Seeing Anpanman can activate Rollpanna's evil heart, while seeing Melon Panna usually triggers her good heart. Initially introduced alone under Baikinman's control, Rollpanna later breaks free but chooses to wander solo, performing good deeds while avoiding close contact due to fear of her evil heart activating. Their interactions form a recurring narrative element.

Melon Panna employs a special technique called the Melo-Melo Punch. This attack can induce dizziness or affection in adversaries and awaken individuals from deep sleep.

Within expanded media, dedicated episodes explore Melon Panna's relationships. "Melon Panna and Rollpanna" focuses on their sisterly bond. Another episode, "Melon Panna and Princess Crystal," pairs her with a princess character, highlighting themes of royalty or collaboration.