Catherine Halsey - Character - Halopedia, the Halo wiki

Doctor Catherine Elizabeth Halsey,, is a key scientific adviser of the Office of Naval Intelligence, best known for her work with the SPARTAN-II program, developing and creating smart AIs such as Cortana, and for overseeing the

Catherine Halsey - Character - Halopedia, the Halo wiki

Catherine Halsey - Character - Halopedia, the Halo wiki

Catherine Halsey - Character - Halopedia, the Halo wiki

Kalmiya - Character - Halopedia, the Halo wiki

Catherine Halsey - Character - Halopedia, the Halo wiki

Catherine Halsey - Character - Halopedia, the Halo wiki

Holly Tanaka - Character - Halopedia, the Halo wiki

Catherine Halsey - Character - Halopedia, the Halo wiki

Catherine Halsey, Halo Alpha