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Olympia Vale was eleven years old when her parents divorced. Her mother, an officer in Navy signals intelligence, was promoted to captain and subsequently reassigned to UNSC High Command on Earth. The trip took Olympia and her mother six months instead of the regular six days, because their ship's slipspace drive broke down. During those six months Olympia taught herself to understand the Sangheili language.
Upon graduating from Sydney University, Vale joined the Office of Naval Intelligence working in signal intelligence like her mother. She soon began to work as an ONI Special Liaison with the United Earth Government's negotiations with the Arbiter.
- She is voiced by Laura Bailey in Halo 5: Guardians.
- In Halo 5: Guardians, Vale is one of 8 playable characters in the campaign. Her unique attributes are a faster thruster pack recharge, slower stabilizer descent and faster movement speed.