Rosalee Calvert is a Fuchsbau, a fox-like Wesen known for being extremely sly and cunning both in the world of the Grimm Brothers historical fairy tales and in the modern world of the U.S. Pacific Northwest.Rosalee originally attempted to follow her parents into the apothecary business, but found that she didn't like the job. She was once addicted to Jay, a opiate-like drug popular in the Wesen community. During this dark period in her life, she was arrested for breaking and entering. Finally, Rosalee appeared to clean up her act and moved to Seattle. She comes to Portland after the murder of her brother Freddy, who runs the local herb shop.She is kind and gentle -- and quite intelligent. Though she initially rejected apothecary, she is obviously skilled in the field. Over time Rosalee aids Nick in a number of investigations and becomes very close with Monroe.