Saiiaden

Saiiaden is one of the three main playable protagonists in Kingdom Hearts: 0 alongside Eraqus and Xehanort.

She is a keyblade wielder like her two bestfriends Eraqus and Xehanort who reside with her on the world the Land of Arrival where they train under Keyblade Masters Phionus, Avenore and Helena.

The Powers of the Keyblade were passed to her by Master Helena upon Master Helena's visit to Saiiaden's original homeworld of Destiny Islands where she formerly resided as a young child with Eraqus and Xehanort.

She was the Keyblade wielder to pass on the powers of the keyblade to Aqua who would later go onto be a Keyblade Master just like she was.

She ultimatley was killed by bestfriend and fellow Keyblade Wielder Eulo via being struckdown by his Keyblade of Darkness.