Rosemary Applefield is one of the primary antagonists of "Ashita No Nadja". She's a 13 year old orphan girl who wants to be princess more than anything. She used to be Nadja's friend but turned against her when she believed Nadja was taking her dream from her, so she joined Hermann Preminger's plan to take control of the noble family and ensure Nadja never reclaims her family and birthright.
As Nadja's friend, Rosemary is sweet, innocent, and positive. But as a villain, she's diabolical and malevolent, willing to be as ruthless as possible in order to get what she wants.