Melina Rosi is a curator at the Phidias Cultural Center in Greece. She is voiced by Billie Wildrick.
Melina brings Nancy onto the team in 2014 in preparation for the opening of the "Life in Ancient Greece" exhibit and its accompanying play, "Persephone in Winter". Melina was secretly concerned about the fact that most of the staff had mysteriously left, and by the time Nancy arrives, some of the pieces have gone missing.
Melina fires Nancy when she discovers some of the missing pieces herself, although she does this for Nancy's safety. Nancy still manages to uncover an art heist operation in which the real artifacts were being replaced with replicas. The termination of the heist led to great success for the museum and the exhibit.