Cesira originated in Italian advertising shorts as Calimero's mother. A Venetian hen mated to Gallettoni, early narrative established her disowning Calimero immediately after his birth due to his black coloration contrasting with the family's yellow feathers, forming a foundational element of Calimero's initial separation.

Subsequent adaptations, including the animated series, maintained her role as Calimero's mother residing with Gallettoni. Later versions significantly altered her characterization, abandoning the initial rejection. Instead, she was depicted as loving and protective towards Calimero, actively defending him, establishing a stable parental unit with Gallettoni.

In the 2013 CGI series, she resided with Calimero and Gallettoni in Belladagio. Her character engaged in domestic activities, tending flowers on the family terrace and baking cakes that Calimero enjoyed during afternoon snacks, contributing to her portrayal as a nurturing maternal figure.

Her background lacks extensive elaboration. She remains consistently defined through her familial relationships as Gallettoni's mate and Calimero's mother, her narrative function centered on providing a parental presence in Calimero's home life.

Character development primarily manifested through the fundamental shift from initial rejection to consistent, supportive motherhood in all subsequent media. This revised portrayal is maintained without significant evolution across later series, including the 1992 anime and 2013 CGI reboot, settling into a caring parental role.