Aelita Schaeffer (also known as Aelita Hopper, Aelita Stones, and Maya) is the deuteragonist/secondary protagonist of Code Lyoko. Aelita is a human-turned virtual being, and the daughter of Franz Hopper. She is the only girl in Lyoko (as only one exists), and one of the members of Team Lyoko. However, Aelita differs from the other members of Team Lyoko in that she is deeply linked with Lyoko, as she remained as a guardian of the virtual world for ten years after being virtualized by her father, Franz Hopper. Jeremie would later discover Lyoko, and in turn, Aelita (and X.A.N.A.) after turning on the Supercomputer.
She was voiced by Sharon Mann. In the Japanese dub from the series, she was voiced by Yū Shimamura.
Aelita started out as the Damsel in Distress in the series. Unlike the other characters, she seemed to have originated on Lyoko, and survived there for years. The first season of the show deals with Jérémie and the Team trying to figure out a way to materialize her into the real world. She originally had two special abilities in Lyoko: she could enter the access towers that XANA uses to interface with the real world and shut them down, and she had the ability to morph the virtual landscape around her to create walls, rockslides, etc. Starting with Season 3, she was no longer in danger of being killed if losing all her Life Points. She gained the ability to attack with spheres of energy as well, and obtained wings in Season 4 with her new outfit.