There have been many different characters with the name of "Aquagirl" over the years. None of them have stood the test of time however. My personal theory is that this is due to their costume design. Rarely have they looked Atlantean or even aquatic in nature. Some are even wearing street clothes under water. The one design that I feel really worked though was this Aquagirl from Batman Beyond, also known as Mareena (the daughter of Aquaman). She was originally created to be a part of a future Justice League in a 2-part BB story arc, but she has since made appearances in Justice League Unlimited and many comics. Her costume, hair color, and pointed features give her that otherworldly feel that her previously incarnations lacked. Aquagirl can breathe underwater, telepathically communicate with sea life, and can control water itself. In her backstory, we learn that she was kidnapped by Darkseid and trained as one of Granny Goodness' Female Furies. Cool stuff. Let's check her out below!
Mattel released several groups of figures in 2012 as the "Final JLU Figures" exclusively on Mattycollector.com.
It's kind of ridiculous that her "bare" feet are actually flesh-colored boots.
Her articulation is limied to the standard 5 points given to all JLU females. She also sports the same defective feet that they all suffer from. Mine is standing with the aide of an Infinite Crisis figure stand.
Here are some images of Aquagirl from the Cartoons and Comics.
I always thought Mareena's design was reminiscent of DC's Dolphin character from the 1960s.
Time for a Comparison Pic!