Océane Rousseau is the aunt of Marie-Grace Gardner and wife of Luc Rousseau. She is a French opera singer and voice teacher. She is described as having fair skin, brown hair, and blue-green eyes similar to the color of the ocean. Océane is regarded as a kind and nice woman who is patient and understanding with her students; Cécile is considered to be one of her favorites. Océane can also see and is willing to teach students who have potential, such as Marie-Grace.