Quint Nakajima

The late mother of Ginga and Subaru Nakajima. She once worked with Zest Grangaitz and Megane Alpino investigating an incident involving Combat Cyborgs, but was killed in the incident. This motivates her daughter Ginga and her husband to investigate the whereabouts to her killer. She greatly resembles Subaru and Ginga, and it is suggested that her genetic data was stolen and used to create them.

(Source: Wikipedia)