In the anime Delico's Nursery, Frida Delico is the wife of the protagonist, Dali Delico, and the mother of their sons, Raphael and Ul Delico. Her background is that of a member of the noble Delico household, residing within the Delico estate alongside her family.

Details regarding Frida's personality are not extensively detailed in available sources, but her actions and final moments reveal a character defined by her love for her family. Her primary motivation and most significant role in the story stem from her tragic death. During a raid on the Delico estate by the criminal organization Pendulum, Frida is caught by one of the assailants. Under the influence of an enemy's order, she is compelled to kill her loved ones. In a desperate turn of events, it is her husband's close associate, Gerhard Fra, who is forced to kill Frida to prevent her from harming Dali.

In her dying moments, Frida makes a final request to Dali, entreating him to care for their children and to surround them with love. This wish becomes a pivotal driving force for Dali's character throughout the series, as he prioritizes the hands-on rearing of his sons, even while managing a critical investigation. The other members of his agency express surprise at his direct involvement, suggesting that in their aristocratic vampire society, such duties would typically be left to a nanny. Frida's death is mourned by Dali, who marks the anniversary of her passing, and her memory continues to influence the family. Her son Raphael is noted to have an adoptive older brother role for Ul, a promise made in the wake of their mother's death. There is no information available regarding any notable abilities possessed by Frida Delico.