Wonder Girl (Cassie Sandsmark)

Wonder Girl (real name Cassandra "Cassie" Sandsmark) is a fictional superheroine from the DC Comics and its universe. She is the daughter of the Greek God Zeus and Dr. Helena Sandsmark, and is the second person to hold the "Wonder Girl" title, the first being Donna Troy. However, in the New 52, Wonder Girl is the granddaughter to Zeus, and her aunt is the superheroine Wonder Woman. Wonder Girl is also a prominent member of the superhero teams Teen Titans and Young Justice.

She was created by John Byrne, and first appeared in Wonder Woman Vol 2 #105 in January of 1996.