Eureka Thurston (エウレカ Eureka Thurston) is the main female protagonist; a member of the Gekkostate. She is the pilot of the Nirvash type ZERO, and sits along side her co-pilot Renton Thurston, with whom she falls in love and later marries. She is also a Coralian created by the Scub Coral and was meant to gather information on the human population. She starts off in the story as an aloof and emotionless young girl but grows up into a kind, caring, and almost entirely human-like woman. In Eureka Seven: AO, she is the mother of Ao and Amber.