Cassandra "Cassie" Sandsmark, also known as Wonder Girl, is a superheroine appearing in DC Comics. She was created by John Byrne and first appeared in Wonder Woman (vol. 2) #105 (January 1996). The second Wonder Girl, Cassie is a sidekick of the superheroine Wonder Woman and has been featured as a member of the Teen Titans. When Cassie was introduced, she was the daughter of an archaeologist, Dr. Helena Sandsmark, a friend of Wonder Woman's. To help Wonder Woman during an adventure, she borrowed magical artifacts which bestowed upon Cassie superpowers, with which she fought crime as Wonder Girl. Later, Zeus, king of the Greek gods, grants her real powers. Later revelations showed that Cassie was in fact a demigoddess and the daughter of Zeus and Dr. Sandsmark. In 2011, when DC relaunched Wonder Woman and revealed she was Zeus's daughter, the publisher retroactively changed Cassie's backstory to establish she was actually Zeus's granddaughter and Ares’ daughter, making her Wonder Woman's niece. Publication history Cassandra Sandsmark initially appears as a supporting cast member in Wonder Woman. She later appears as part of an ensemble in Young Justice and Teen Titans. She appeared in supporting roles in 52, Supergirl, and the 2006 relaunch of the Wonder Woman series. In September 2007, she appeared in the six-issue limited series Wonder Girl: Champion written by J. Torres and illustrated by Sanford Greene and Nathan Massengill. Fictional character biography Cassie spent most of her time at her mother's place of work, the Gateway City Museum of Antiquities, where she had a penchant for getting into trouble. She quickly befriended her mother's new employee, Wonder Woman, and was eager to help her. During a fight with a Doomsday clone and another battle with Decay, she created a costume and used magical acquirements (the Sandals of Hermes and the Gauntlet of Atlas) to help Wonder Woman, much to her mother's horror. Cassie later had the opportunity to ask Zeus for a boon, and requested real superpowers. Zeus granted her request, but gave Dr. Sandsmark the ability to deactivate them. Dr. Sandsmark, however, reluctantly accepted her daughter's wish to be a superheroine and rarely, if ever, used this ability. Artemis was assigned as her teacher. Even without her power, Cassie was a problem child, and frequently had to change schools. Throughout her teens, she attended Holliday School for Girls, Brewer High School, Dennis Peterson High School, Gateway