Aquagirl (also Aqua-Girl) is the name of several characters appearing in American comic books published by DC Comics, depicted as the female counterpart to Aqualad and junior counterpart of Aquaman. Originally, the first two incarnations of the characters, Lisa Morel and Selena, were introduced as one-off characters in one-off stories. The mainstream version of the character, Tula, first appeared in Aquaman #33 (May–June 1967) as the third incarnation of the character. Originally one of Aquaman's partners, the character also served as a love interest to Aqualad and was a member of the Teen Titans until being killed off in the Crisis on Infinite Earths in 1985. After the New 52 reboot, the history of the character was retroactively changed with Tula being the sole character to be referred to as Aquagirl. Unlike prior depictions, Tula Marius is the half-sister of Ocean Master and does not actively use the Aquagirl codename. Tula has also been portrayed as a high-ranking commander of an Atlantean-based covert black-ops faction, a regent for Aquaman's administration, and a honor guard during Mera's administration. Several incarnations of Aquagirl have appeared in media, including the Tula incarnation in Young Justice and Justice League: The Flashpoint Paradox, although she is not identified as her codename in either. Original incarnations of the character appear such as Mareena, the future daughter of Aquaman and Mera present in the Batman Beyond series. Publication history The Tula version of the character was introduced in Aquaman #33 (May–June 1967), created by Bob Haney and Nick Cardy. Fictional character history After losing her parents soon after her birth, she had been found and adopted by one of the royal families of Atlantis. Given the title Princess of Poseidonis, Tula is schooled in Atlantean traditions, and never leaves the royal palace until she meets Aqualad at age fifteen. Tula would sometimes helps Aqualad with missions during his time with the original Teen Titans, using the name Aquagirl. When Aquaman leaves his throne to search for his then-missing wife Mera, Narkran takes over Atlantis as a dictator. His reign falls only when Tula leads a rebellion against him. Tula and Garth resume their romance when he returns to Atlantis and they later appear in the 1980s revival series New Teen Titans to aid the Titans in bringing down the H.I.V.E. During the Crisis on Infinite Earths limited series (1985–1986), Aquagirl is killed by the villain Chemo when