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 "".
Halo 4
After destroying the gravity well, Del Rio orders a retreat back to Earth, doubting the Chief and Cortana's testimony. The Master Chief disobeys orders to stand down and relinquish the malfunctioning Cortana, and stays behind to oppose the Didact. "Infinity" executive officer Commander Lasky gives Chief an armed transport and wishes him luck. Chief and Cortana attempt to sabotage the Didact's ship before he leaves, but when they are unsuccessful they follow the Didact to a Halo ring, Installation 03. The Composer has been moved from the ring onto the nearby Ivanoff Research Station, which the Covenant attack. The Chief defends Ivanoff, but the Didact retrieves the Composer and uses it on the station, composing every individual except the Chief.