Mizuki Tachibana

Mizuki is a busty woman who seems to have a mysterious past. She is the only female adult on the team. She is the pilot of the Gran Diva, the G-Striker, who loves her alcohol, but is also the most rational member among her teammates. Mizuki is also a skilled hacker, and in Gravion Zwei, she pilots the Geo Stinger.

(Source: Wikipedia)