Cassie Sandsmark is the third super-hero to use the name Wonder Girl, succeeding Donna Troy as the side-kick to Wonder Woman. The daughter of an archaeologist named Helena Sandsmark and the Greek god Zeus, she has enhanced powers of strength, speed and invulnerability. Her magic lasso was given to her by Ares, and is affected by her level of anger. She is a founding member of Young Justice, and has also been a regular member of the Teen Titans. Her longest relationship is with fellow Titan Superboy. Cassie Sandsmark was created by John Byrne, first appearing in Wonder Woman (Volume 2) #105. (1996)

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