Raised to kill mercilessly, living only for battle. Stellar was brought to a lab in Lodonia at an early age. There, her purpose in life was already chosen by the Earth Alliance: to become a soldier and a living weapon. Withstanding the pain of heavy mental conditioning and harsh combats, she survived and made it through. Successful in overcoming the challenges given to her, Stellar was then a part of Phantom Pain.

More on the specifics of Stellar on the battlefield and anything related to it can be found in the following links below.

Through the use of drugs, mental conditioning, and harsh trainings, the Earth Alliance were successful in creating their own living weapons out of human beings. Extendeds are artificially enhanced Naturals with the abilities at the same level as a Coordinator.

Assigned to two different mobile suits throughout the series, Stellar did well in controlling both of them. Each mobile suits were powerful and capable of handling many battles.