Aqua (Kingdom Hearts)

Aqua joined Runo and her friends in a battle with the  early shadow force. Marik took over her mind and used her against her newly founded friends. Runo freed her and Aqua went after marik for revenge, but Etna stepped in and killed her. A while later, when Runo and Gabriel make a wish to bring their fallen friends back, she comes back. before she died, she and Amy trained their magical powers.