Master Chief (Halo)
MCPON John-117, or "Master Chief", is a fictional character and the protagonist of the "Halo" fictional universe created by Bungie. Master Chief is a playable character in the series of science fiction first-person shooter video games "", "Halo 2", "Halo 3", "Halo 4", and "". Outside video games, the character appears in books and graphic novels—"", "", "", and ""—and has cameos in other "Halo" media, including "", "", "The Halo Graphic Novel", "Halo Legends" and "".
Cortana (Halo)
In "Halo 3", Cortana appears to the player in broken transmissions. Cortana sends a message to the Master Chief on Earth through a Flood-infected ship, revealing that she has a solution to the Flood threat. On the Forerunner installation known as the Ark, the Master Chief travels through the ruins of "High Charity" to rescue Cortana from the Gravemind's clutches. Cortana reveals her plan to activate the Halo ring stationed above the Ark, destroying the local Flood while sparing the galaxy. Chief and Cortana are successful, but become stranded in deep space aboard the human ship "Forward Unto Dawn". Cortana activates a distress beacon, but she knows that years could pass before rescue comes. As Master Chief prepares to go into cryonic sleep to await rescue, Cortana confides to him that she will miss him.