Aqua (アクア) is a Keyblade weilder from the past, and is featured in Kingdom Hearts Birth by Sleep as one of the three major playable characters. She also appears in Kingdom Hearts II Final Mix+ in the game's secret ending, as well having her armor and Keyblade appear in the Chamber of Repose.
Story
At the beggining of Kingdom Hearts Birth by Sleep, Aqua is one of Master Eraqus' three apprentices. She attemps to take the "Master Qualification Exam", in order to become a Keyblade master. Later, she, along with Terra and Ven, are sent to investigate the worlds and find Master Xehanort.
In Kingdom Hearts II Final Mix, Aqua's armor and Keyblade reside in the Chamber of Repose. Xemnas is seen talking to this armor, referring to it as "friend".
