Eureka

Age: 14 - 16 (Eureka Seven), 30 - 32 (Eureka Seven AO)

Relatives: Maurice (adoptive son), Maeter (adoptive daughter), Linck (adoptive son)

Eureka is a member of Gekkostate and the pilot of the Nirvash type ZERO, alongside her co-pilot Renton Thurston.

A bit of an enigma, Eureka is a young girl who has trouble communicating with and understanding people. She speaks very calmly and directly, and due to her initial lack of empathy, often comes across as blunt. She is often perplexed by other peoples' emotions and behaviors, making her naive, especially when it comes to interpersonal relationships.