Halo

Summary
Halo is a science fiction continuum based around the video game series of the same name and its expanded universe. It focuses on the galaxy-wide conflict between the UNSC, a collection of somewhat loyal colonies centred around Earth, and the Covenant, a theocracy consisting of several species led by the "Prophets". The Covenant discovered the existence of humanity at the planet Harvest after a missionary ship discovered a human freighter. Unfortunately, a power struggle among the Prophets followed by a misunderstanding involving a Grunt priest, carved watermelons, and a sentient pink balloon resulted in the destruction of said planet and the Prophets declaring war on the UNSC.

The UNSC was outnumbered and outmatched, but they had an advantage. They deployed super soldiers in powered armour, code-named SPARTANS. These were considered to be a match for any Covenant force on the ground. In space, however, the Covenant had the upper hand, and the humans would lose the majority of their colonies in less than a decade.

After a minor victory at the world of Sigma Octavius, the UNSC lost the military world of Reach, along with all but 1(or two, or six) of the SPARTANS. This last SPARTAN, the Master Chief John-117, escaped on board the battleship the Pillar of Autumn. The Autumn discovered a mysterious ringworld, the titular Halo of the series, and was forced to crash land on it due to overwhelming odds and bad piloting on the part of Captain "Silly Old Duffer" Keyes.

The crew of the Autumn, along with the Player Character Master Chief, fought the Covenant on the ring. After rescuing idiotic Marines and taking a unguided tour of a Covenant flagship, the Chief found Halo's Control Room. At the same time, Keyes led a group of redshirts Marines into an ominous facility, ignoring the terrified Covenant and bloodstains. Predictably enough, they were massacred by alien zombies called the Flood, which had been imprisoned on the ring by its creators. The Chief tried to rescue Keyes for the second time, found the Flood, and escaped only to be kidnapped by an emo talking lightbulb called 343 Guilty Spark. Said lightbulb led him through a series of deathtraps to retrieve Halo's firing switch, the Index. When the Chief, oddly enough, refused to activate the ring and wipe out all life in the galaxy, Guilty Spark turned on him.

The Chief then disabled the ring, revisited the Covenant cruiser to punch a sizable hole in the again-captured Keyes' head, and blew up the ring by making the Autumn's reactors go critical. Having killed everything in the vicinity, he then returned to Earth after a few pit stops at Reach, a rebel base, and a Covenant superweapon. (Guess which two didn't survive.)

Common Sue Traits

 * SPARTANS not mentioned in canon. They may have special abilities, outrank the Master Chief, or have noncanon armour colours (not green or grey).


 * Sucked into the game from the real world. They may then become SPARTANS or fight alongside them. Naturally, the canons trust them and don't force them to divulge the future despite plenty of canon evidence that the UNSC leadership is Not Nice and views survival as taking precedence over morality.