Nagisa Momoe is a fictional character from the anime series Mahou Shoujo Madoka Magica. She is a young magical girl who appears in the film Rebellion. Nagisa's magical form represents her wish to enjoy cheese forever, which is reflected in her witch form, Bebe, who is known for her love of cheese. In the series, Nagisa plays a crucial role by helping the main characters understand the nature of their world and the truth behind the magical girl system. Her cheerful and innocent demeanor contrasts with the darker themes of the series.