Birthday: October 25
Zodiac Sign: Scorpio
Blood Type: AB
Height: 160 cm (5'3") - 164 cm (5'4")
Nunnally vi Britannia is a royal princess born to the Emperor of Britannia, Charles Di Britannia, and Marianne Vi Britannia. She was 87th in line of succession to the Britannia Throne before she and her brother were exiled to Japan as political prisoners. She is Lelouch's younger sister who is wheelchair-bound due to old bullet wounds on her legs, and blind due to psychological trauma while witnessing the brutal murder of her mother, Marianne Vi Britannia. Lelouch believes that she may be able to see again someday. After the confrontation of Lelouch with the Emperor of Britannia about the murder of their mother, both Lelouch and Nunnally were sent to Japan as political trade. They then went on to live in Kururugi Residence where she first met Suzaku Kururugi.
After Britannia invades Japan, Lelouch hides their identity in fear of their safety and changes their surname to Lamperouge. They then seek help from Marianne's old allies, the Ashford family, who kept their identity a secret and allows the two siblings to live in a building on campus to accommodate her disabilities. Nunnally attends Ashford Academy's middle school and is friends with Lelouch's classmates, particularly with Shirley. She is very kindhearted and calls the Elevens "Japanese people."
She is also the reason why Lelouch wants to revolt against Britannia. Lelouch wants to build a better world for Nunnally. In episode 24, despite the fact that the The Black Knights were on the verge of winning, Lelouch abandons them to rescue Nunnally after learning of her being kidnapped by V.V.