Donna Troy is a fictional character, a superheroine in the DC Universe. As Wonder Girl, she was one of the founding members of the Teen Titans. Over the years, her origin story has been changed several times, and she has battled evil under various different identities. Her ability to remember the different versions of herself has established her as a living link to the DC Multiverse. She served as Wonder Woman during the year-long absence of her sister Diana following Infinite Crisis.