Initially Celes is an independent and harsh woman. She refuses Locke's offer to escape with him, preferring to remain imprisoned to face her execution with pride. However, as time goes on Celes opens up more to the other party members and refers to them as her friends and comrades, and she is the driving force in the World of Ruin that begins reuniting the scattered party.  (Also there is a scene in the game where Celes sings so yeah!)