Vanellope von Schweetz is a main character from the video game-themed movie 'Wreck-It Ralph'. She is a glitchy racer and one of the main protagonists in the fictional arcade game 'Sugar Rush', which is set in a candy-themed racing world. Despite being an outcast due to her glitch, Vanellope is determined to prove herself as a racer. Her journey is about overcoming obstacles, embracing her uniqueness, and forming an unlikely friendship with Ralph, the movie's titular character. Vanellope's role is pivotal as she represents themes of acceptance and self-discovery.