Kalmiya

Kalmiya, a "smart" AI, is Dr. Catherine Halsey's replacement for Cortana while the latter is working with the Master Chief. Since "smart" AI's are created in Halo by copying the neural patterns of cloned human brains, she is a copy of Dr. Halsey's neural patterns, in a sense being Cortana's older sister. She also contributes a portion of her core programming to the making of Cortana. She is erased according to UNSC protocol when the ONI CASTLE Base self-destructs to prevent the Covenant from discovering any human secrets, such as the location of Earth.