Aqua is a fierce female warrior who is both quick and deadly in battle. She is acrobatic as well as being a very good spellweaver. She is probably the strongest of the three who were mentored by the same man, but she doesn't say a word about it, or doesn't think so herself. She is a powerful warrior.

She shared the same mentor as Terra and Ventus, and the three grew up very close.

She has a strong sense of justice and a bright light in her heart which refuses to be extinguished. However, she was banished to another realm by Ansem for interfering in his plans to control everything.