since i’m gonna consider halo & destiny co-existing in the same
universe, here are some things that apply to noble six about this.
he was the guardian who, upon being discovered by the ghost, told it “i fought in a thousand wars to last a thousand lifetimes.” eventually, he chose to be resurrected.
there is an extremely ugly scar in the middle of his face, running diagonally across his nose & almost rendering his left eye obsolete. this is from a fallen captain’s firearm during the collapse.
noble six’s memory is definitely jumbled, especially with his face injury. some details are scattered here & there – specific moments leading up to the collapse are forever wiped ( unless external stimuli triggers flashbacks ), but sensations of deja vu are felt around the rocketyard & certain areas of the last city.
the UNSC = earth’s military formed upon the traveler’s appearance, composed of every country on the planet. ONI is its intelligence / private sector, handling scouting & covert ops on previously uninhabitable planets. noble six was part of this, having aided the UNSC in making sure venus & mars were habitable.
how did he get into that pod? in battle, noble six was seriously injured by the aforementioned fallen captain & in a quick ( see: reckless ) act to preserve one of their top operatives, ONI / UNSC forced his body into cryostasis for an undetermined amount of time. a malfunction occurred soon after the collapse ended, resulting in the deaths of everyone stored in the pods – including noble six.