Aqua

Unreleased Aqua is a character from the upcoming game Kingdom Hearts: Birth by Sleep. She first appears as a young, blue-haired female knight who fights alongside Ven and Terra in the secret ending movie of Kingdom Hearts II: Final Mix+. She is the first to be unmasked when her helmet gets smashed after being thrown to the ground in battle. She and Ven briefly take on Master Xehanort's apprentice together, but make no progress in defeating him. She uses a spell reminiscent of Reflect to shield Terra from the Keyblade cyclone generated by Master Xehanort. She is a spectator for the rest of the battle, being too far away to reach their enemies before Ven becomes trapped by the old man's grip. She is seen looking on in horror as Ven struggles fruitlessly, and catches his frozen body after he is dropped off the cliff. She was originally seen in magazine scans as staring up at a glowing heart, and due to her hair color and style, was seen as connected to Kairi by some fans. The video ends with her holding a helpless but still living Ven, gazing up at what may be a newly appeared Kingdom Hearts in the sky.

Aqua's armor and Keyblade were briefly seen in Kingdom Hearts II: Final Mix+. They reside in the Room of Sleep, a room constructed by the Organization under Radiant Garden for an unknown purpose. Xemnas apparently visits the armor often, calling it "old friend" and talking to it for long periods of time. Xigbar tells Zexion that he once heard a voice talking back.

At the recent Square-Enix event, Aqua was seen dancing before Ven and Terra, denying the possibility of Terra descending into darkness while conversing with Maleficent, and even seen battling her dragon form. She is to be voiced by Megumi Toyoguchi, who previously played Paine in Final Fantasy X-2 and her Kingdom Hearts II counterpart, as well as the Turks Elena and her elder sister "Gun (Female)" in the Compilation of Final Fantasy VII.