Kei Nagase is an Osean astronaut and former fighter pilot who served as Wardog Squadron’s second-in-command during the Circum-Pacific War, later becoming part of Razgriz Squadron. Initially a trainee, she greatly improved her piloting skills and became Blaze’s wingman after Captain Jack Bartlett was shot down. After the war, she became an astronaut on the Pilgrim 1 asteroid interception mission and later served as flight director at Comona Space Base.