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Fanfic / A Spartan in Westeros

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A Spartan In Westeros is a Halo / Game of Thrones crossover fanfic by Agailius (also known as Avalor0n) on

Set after Halo 3 and before the first episode of Game Of Thrones, Master Chief and Cortana finds themselves in the world of Westeros after their ship, Forward Unto Dawn, crashes in the North. Ned Stark, the Lord of Winterfell and Warden of the North, along with his sons, find the Chief and after some hesitation invites him and Cortana to Winterfell. As the Chief and Cortana tries to find a way to contact the UNSC for rescue while integrating with the locals, his arrival causes a stir within the Seven Kingdoms while a threat from beyond the Wall is coming.


The fanfic can be read here at and here at Fan Fiction Dot Net.

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    The Original Fanfic 
  • Actually Pretty Funny: John has a section on Winterfell's keep's first floor collapse under him and he falls on a table, splintering it. Arya laughs, and after the Spartan comments on the event - "I think you'll need another floor" - Eddard joins his daughter.
  • Arbitrary Skepticism: When Maester Luwin says the Children of the Forest may not have existed outside fables and lore, Cortana points out that herself and Master Chief are, too, quite unreal. Luwin, far from feeling hurt, takes this to heart.
  • Ascended Extra: Thanks to being Spared by the Adaptation, Will, the deserter, ends up becoming The Master Chief's apprentice and nominal sidekick. In canon, he died within minutes of the first episode's beginning.
  • Asskicking Equals Authority: As Mance explains to Robert, this is how the Free Folk operate - he had to outfight and outwit his rivals in order to unite them and bring them south.
  • Awesomeness by Analysis: Master Chief, of course. He has enough brainpower to study a large group of enemies and the place they are in to determine weaknesses and potential strategies to take advantage of them - in less than a second.
  • Broken Pedestal: Like in canon, Jon is disappointed about the Night's Watch. This also causes Jon to change his mind of joining the Watch but instead choosing to join the Spartan's auxiliary corps.
  • Bullying a Dragon:
    • The Lord of Bones should have shut his mouth before threatening Master Chief and the Night's Watch.
    • Jaime really shouldn't have mocked Brandon.
  • Celibate Hero: Master Chief. Justified Trope, because of the treatments he underwent when he became a Spartan. Naturally, every noble in the North immediately tries to rope him into a political marriage. Also, Winterfell's prostitutes frequently try to seduce him to no avail.
  • Clue, Evidence, and a Smoking Gun: Chief tells Tyrion that he investigated the Broken Tower and found hand and foot prints of Jaime and Cersei, hair that can only belong to Cersei, seminal fluids - and that he also has Bran's testimony to what was going on in there.
  • Culture Clash: As noted under YMMV, the people of Westeros consider the idea of putting aside old hatreds to face a common foe to be mind-boggling. On the flipside, John considers the feudal system both morally wrong and monumentally inefficient (with heavier emphasis on the latter, though probably just because he hasn't seen the scale of suffering the smallfolk face daily).
  • Curb-Stomp Battle: The Spartan barely makes a sweat in an arm-wrestling contest against Greatjon, and he just needs one move to win - and break the table they are using in two.
    • The Spartan vs three Kingsguards. He knocks Meryn Trant and Boros Blount out of the fight by just pushing Trant with his finger, and then destroys Jaime in close quarters, bending his armor and breaking his sword. And he wasn't wearing the MJOLNIR armor.
  • Easy Logistics: Defied by Master Chief as he explains to Jeor Mormont just what a massive and difficult undertaking it would be to fortify the Wall, even with the full backing of the Seven Kingdoms.
    Master Chief: You have no way of knowing how strong the enemy is, to begin with. And the sheer logistics of marching an army of such a size would be monumental given the lack of sophisticated roads or uniform supply trains, to say nothing on the political and economical cooperation required to make such a military campaign possible. Even then, if somehow the massive army were to successfully mobilize, the aforementioned lack of roads will hinder the speed in which they could come from so far south. And then, if they arrive in time, you then have to help feed them, garrison them into the castles along the Wall-all but three of which I understand to be derelict-and then coordinate them if an enemy attacks. Lastly, if the free-folk march on the Wall, you will not only be expending valuable resources in beating them back, but you also risk letting them be killed and possibly brought under the control of the White Walkers.
  • Facepalm: Lord Stark actually does this after the Spartan tells Greatjon that he might take off his helmet if he beats him.
  • Felony Misdemeanor: Cersei hates Master Chief for the high crime of not kneeling before her. Jaime uses that excuse to attempt to arrest/kill him after he saves Bran while keeping him safe in the Forward Unto Dawn.
  • Finger Poke of Doom: Even a mere jab from the Spartan's outstretched finger is enough to pierce the armor of a Kingsguard and send him and another of his sword-brothers flying.
  • For Want of a Nail: Chief's arrival has changed quite a few things, to say the least.
  • Food Porn: Anytime the Chief teaches the locals how to make food from Earth, someone will give a very detail and delicious description of said food.
  • Gag Penis: Chief is very big, and not only in frame, apparently. Robb, Jon and Theon get to see him without his suit (though his face is still covered) and feel very much lacking in manhood afterwards.
    Robb: ...Seven hells. I knew he was a giant of a man, but for pity sake, does he have to make our manhoods so cheap?
  • Genius Bruiser: Master Chief, full stop. While the bruiser part was already obvious, recent chapters have also shown off the genius side. For example, Chief offers plenty of valid reasons as for why Robert should stay in the North (namely, the fact that, even if the White Walkers don't exist, something is getting the Wildlings interested in trying to cross the wall). Additionally, he also offers insight into possible reasons for the Wildings' culture.
  • Gentle Giant: Even Bran readily notices that for all of Chief's huge bulk, inhuman strength, otherworldly origins, fantastical weapons, and his tendency to never take of his armor, the Chief actually has an air of awkward gentleness about him - not that his presence isn't still intimidating as hell.
  • Giving Radio to the Romans:
    • Cortana helps Maester Luwin make the lives of the Northerners better by giving him plans like the printing press.
    • Cortana points out how the best application of this trope is gifting technology and scientific understanding that has little military application but incredible civic application. Something like the printing press literally benefits everyone, and anyone who might be bothered by a given faction receiving the technology can be mollified by simply being given that same technology themselves. And after all, who is going to complain when someone is literally giving out technologies, methods, and designs for tools that will net you greater food production or taxable gold to anyone who wants it, for free?
    • However, both Chief and Cortana are aware that they can't just give the people of Westeros UNSC technology, as they have no way to repair or replicate said technology. The only advances they can give them are ones that could be replicated with the relative level of technology available to Westeros right now.
    • Taken almost literally when King Robert is faced with the dilemma of staying in the North where it's safe or going back to King's Landing to lead and risk being assassinated. The Chief gives him access to and instructions on how to use a radio so he can communicate instantly with his Court back home while staying safe in the North.
  • Hidden Depths: Chief ends up showing philosophical and societal insights that you wouldn't normally expect from a Super Soldier. Additionally, while he does muse about the UNSC occupying and uplifting Planetos, he isn't condescending about it. He also treats the Free Folk with respect, even though they are essentially barbarians by Planetos standards. Word of God is that this comes from the exclusive education he received from Halsey that none of the other Spartans had.
  • Hunk: Tyrion describes the Spartan without helmet as reminiscent of a young Robert Baratheon with Tywin's glare, and thinks many unmarried wenches would gladly bear him bastards... and quite a few married ones too.
  • Hypocrite: When Tyrion begs Master Chief not to spread the news of the Lannincest because it would lead to the death of innocents (Myrcella and Tommen), Chief points out that Bran was also an innocent, yet Jaime had no trouble in trying to kill him.
  • Identical Stranger: Cortana somewhat resembles Lyanna Stark, which causes Robert Baratheon a great deal of grief and confusion when they meet.
  • In Spite of a Nail: Bran still has his fall from the tower.
    • Not only that, while John is able to find forensic evidence that implicates Cersei and Jaime in Bran's fall, he can't do anything with it. As Tyrion points out, outing them will set forth a chain of events that will lead to their children being murdered and Westeros erupting into a Civil War. The best John can do is threaten Jaime into leaving Bran alone with a No-Holds-Barred Beatdown.
  • Lame Pun Reaction: One of the scientists in the Spartan project called the Spartan's ability to rapidly process tactical information "Spartan time". Doctor Halsey nearly fired him for this as a result.
  • Luminescent Blush: When Luwin jokes that the Spartan and Cortana argue Like an Old Married Couple, Cortana momentarily turns red and pink. The Spartan is left worried because Turning Red is usually a sign of impeding rampancy.
  • Neck Lift: Master Chief does this to the Lord of Bones in order to make him "cooperative" after the latter couldn't stop insulting and threatening him. The Master Chief also make sure to carefully not snap the Wildling's neck or even decapitating him while in his MJOLNIR armor.
  • Not So Different: The Night's Watch and the Wildlings. As one of the black brothers tells his partner, the only difference between them is that the former are south of the Wall and the latter are north of the Wall, while both are stuck in a frozen wasteland.
    • Equally, John and Cortana point out that Earth's humanity is not so different from Planetos' humanity, because, in spite of the wide gulf of technology that separates both, they are still human, and still have the same positive and negative traits.
  • Odd Friendship: Maester Luwin, an old human Westerosi scholar, and Cortana, the most advanced and knowledgeable AI the UNSC ever made, veteran of a galactic war and a battle 100,000+ years in the making, thousands of lightyears outside of the galaxy. They both fascinate each other, and neither expected to find such a sharp academic mind to interact with in a place and time like this.
    • Robert Baratheon and Mance Rayder.
  • Outside-Context Problem: The Master Chief, Cortana, and the crashed wreck of the Dawn, for Westeros. Well, for those inclined to cross them or the Starks - in other words, scheming, ambitious, ruthless, power-grabbing bastards - anyway. Varys is a notable subversion, however: this new development could very well throw all of his plans into jeopardy, but he immediately acknowledges that he must and should adapt to any new factor that is game-changing enough to be such a concern in the first place.
  • Pragmatic Hero: Master Chief is willing to let the matter of who tried to kill Bran drop, because if he tells Robert the truth then he will kill Cersei and Jaime and then there will be civil war at the worst possible moment. However, he warns Tyrion that, if any of the Starks dies in suspicious circumstances, then consequences be damned, he will speak up, and everyone who tries to threaten the peace after that will be killed.
  • Pre-Asskicking One-Liner: Jaime finally gets a rise out of the Master Chief - by stomping on his Berserk Button of hurting children. John turns around, kicks away the sword that Jaime tossed him, and says, "You're going to need that far more than I will." Cue Curb-Stomp Battle.
  • Pride: Tywin Lannister's pride is the only reason Jaime and Cersei are still free and most likely alive. Tyrion recounts to the Chief the tale of the Reynes and Tarbecks and how Tywin exacted his revenge upon Castamere, and how he will most likely descend with the Westerland hosts upon the North should either Lannister be unduly harmed at a point where the mere possibility of the Walkers' awakening makes complete solidarity an absolute necessity. Chief concedes the point... only for Jaime to slam his Berserk Button.
  • Properly Paranoid: With his very recent experiences with the Flood, John is not inclined to take any remotely compelling signs of the White Walkers go without investigation.
    • He has similar issues with Lysa's letter.
  • Rage Breaking Point: Master Chief was perfectly willing to walk away from a confrontation with Jaime Lannister and his fellow Kingsguard, ignoring every taunt the Kingslayer gave... until Jaime insinuated that Bran, who is recovering nicely from his fall thanks to the Spartan's aid, might suffer another tragic fall. That causes Chief to turn around, and Jaime soon comes to regret it. Immensely.
  • Reasonable Authority Figure: Even alongside the likes of the Starks, John comes across as one when it comes to matters outside the scope of what Westerosi rulers normally deal with.
    • Robert, too. In predictable contrast to Cersei, he outright likes that John doesn't kneel before him. And when Mance reveals himself at Winterfell, Robert is very courteous to him and even offers to go hunting with him. Word of God implies this is partly because he doesn't want to provoke the Wildlings and partially because Mance is the only person who could even remotely be considered his equal.
  • Sacred Hospitality: Abruptly held during Robert's feast when Mance Ryder made his presence known. It is no surprise that Mance's guest rights prevent the lords from outright murdering him on the spot.
  • Shell-Shocked Veteran: It's implied that this is part of the reason Chief wants to seek a peaceful resolution to the conflict between the Seven Kingdoms and the Wildlings.
  • Shout-Out:
  • "Shut Up!" Gunshot: The Master Chief avoids doing this during the tense meeting between the Night's Watch and Wildlings as it would only worsen the situation by causing everyone to panic and ruining any chance of knowing about the White Walkers. Instead he amplifies his voice to quell any conflict between the two groups.
  • Socially Awkward Hero: For all of his fighting prowess, John is inexperienced at best when it comes to socializing with others.
  • Spared by the Adaptation: Will, the Night's Watch deserter who was executed by Ned in episode one, is saved when John is able to prove his claims of the White Walkers may not be as farfetched as Ned and the others believe.
  • Storyboarding the Apocalypse: Not so much, but when Eddard asks why not to give gunpowder to the smallfolk, so that they will stop being used as fodder by knights and nobles, Cortana points out what would most likely happen: the Seven Kingdoms would fall apart. Gunpowder weapons, relatively easy to make, train for and use, as opposed to the years required to train crossbowmen and knights, would offset the delicate balance feudalism is built upon. Any noble with enough money could pretty much buy himself an army to either take power or fight against others over any petty struggles, and smallfolk that were fed up with how they are treated by the nobles would have an easier time at starting large scale rebellions. This would leave everyone bereft of the relative protection given to them by their feudal society and spark great chaos and strong-preying-on-weak anarchy.
  • Supreme Chef: The Spartan's wide variety of knowledge also expands to the culinary arts, introducing several new recipes and ingredients to the Northern kitchen (including maple syrup, which the North can easily collect and possibly export) that are readily welcome.
  • Token Good Teammate: As far as Robert is concerned, Sers Aerys Oakheart and Barristan Selmy are the only Kingsguard members both competent and trustworthy.
  • Villainous Breakdown: Tyrion, even if he's more of a devil's advocate out of familial pride than a villain. When Master Chief accuses Jaime of pitching off Brandon from the tower, he leaps to his siblings' defense as a Lannister. As the Spartan guides him through the evidence, he remains flippant, confident that he can wave off the accusations... until he's told Brandon's awake and told Master Chief damning testimony that would doom Jaime and Cersei if the King learned about it. At this, he sinks and desperately begins wondering what he can do to buy the Spartan's silence.
  • Wham Episode: Chapter 17: Mance Ryder is revealed to be present at the feast for Robert's arrival in Winterfell, while Tyrion ends up learning about Cortana.
  • You Didn't Ask: The Spartan's blunt answer when Ned asks why he never lifted his helmet.
  • You Remind Me of X: When they see Cortana for the first time, both Robert and Tyrion have flashbacks to Lyanna Stark and Tysha, their respective Lenores.

    Space Battle Omakes 
  • Big Damn Heroes: Master Chief, Arya, Jon and Will save Sansa and Joffrey from two bears that attack them on the way to King's Landing.
    • Master Chief saves Eddard from being beheaded.
  • Bullying a Dragon: Cersei should know better than to get on the nerves of a guy that could beat six knights (who made that mistake, too) in about as many seconds.
  • Celibate Hero: The Omakes that take place in Dorne show Arianne (considered one of the book's biggest Ms. Fanservice) trying to seduce Master Chief. For the most part, he ignores this or tells her he is not interested.
  • Cherry Tapping: During his fight against the six knights, he punches one of them hard enough that his helmet goes flying. The last standing knight rushes him, so Chief steps back... and lets the helmet do his job for him.
  • Complaining About Rescues They Don't Like: Joffrey, in his usual Jerkass self, complains that Chief saved him from some bears, stating he has shamed him in front of Sansa. Chief puts him in place quite soon.
  • Cool and Unusual Punishment: While in Dorne, Cortana tells Chief that he needs to get a bath. Chief is reluctant. Cortana threatens to replace all his music files with flip music. Chief acquiesces.
  • Curb-Stomp Battle: see One-Man Army.
  • The Farmer and the Viper: Master Chief mentions "The Frog and the Scorpion", telling Sansa that Joffrey will never give a damn about her beyond caring for how much he can harm her.
  • Fun with Acronyms: One story has the Chief modifying a Mantis Armor Defense System for Tyrion, dubbed the "Heavy Ordnance Battle Bot: Instigator of Terror", or H.O.B.B.I.T.
  • Luminescent Blush: Cortana when Sansa figures out the former has the hots for the Chief.
  • One-Man Army: Master Chief, of course. He goes through six knights (non-lethally) in about half a minute. Another has him wipe out most of the Kingsguard and a good bunch of Lannister guards in a minute.
  • Neck Lift: After saving Ned from execution, the Chief comes and dictates terms to Cersei while holding Joffrey off the ground by his neck. Slight distraction when he notices something dripping down Joffrey's leg.
  • Pinocchio Syndrome: Some of the omakes have Cortana gaining an actual body.
  • Refuge in Audacity: During her escape from the Red Keep, Arya takes her time to lay out a few pranks. She leaves the Goldcloaks with a large case of vomit and diarrhea, drops her special knife for them to find and learn it was her that did the deal, then takes it back and leaves with help from Gendry - using the front door and carrying a large bag full of loot and food. And pretty much telling Gendry she intends to marry him.
  • Shout-Out: A few with the radio callsigns he hands out to various people. Arya is "White Fang", Tommen is "Simba", and Ned is "Akela".
  • Ungrateful Bastard: Master Chief and his trainees Jon, Arya and Will save Joffrey and Sansa from a couple of bears on the way to King's Landing. Joffrey takes exactly zero seconds in trying to blame them for his injuries.
  • Who's Laughing Now?: Tyrion asks this as he goes on a rampage through King's Landing in a miniaturized Mantis mech based on the Grunt Goblin.
  • Women Prefer Strong Men: Arianne Martell really likes Master Chief well before she even sees his face.
    A History of The Spartan and the Starks, By Maester Benjymen 
This is a fanfiction/Alternate History where the Spartan arrived to Westeros during the Long Night and helped Brandon the Builder to fight off the White Walkers, written by Avalor0n as well. The story relates how the Spartan's presence has influenced the North and allowed it to become strong... strong enough to help the other First Men to repel the Andal invasions and to remain independent after the arrival of Aegon the Conqueror. Still, the North remains influential with the Five Kingdoms, and much happens due to their interactions.
  • Armor-Piercing Slap: How the Spartan killed Aegon II after he demanded the Spartan surrender King's Landing to him and kneel under threat of hiring an army of sellswords to take the city by force. He hit him so hard his neck snapped.
  • Been There, Shaped History: Without the Spartan, things would have been markedly different.
  • Big Damn Heroes: The Spartan, again and again. Particularly standing when he saved Cortana Stark from being burned alive after she castrated Aegon IV - and that, after being thought to be dead in a trap set by Aegon IV.
  • Bullying a Dragon: Any time a Targaryen (or anyone else) makes demands of the Spartan. See Too Dumb to Live.
  • Butterfly Nets: In spite of the North helping stop the Andal invasion and then remaining independent when Aegon comes calling, the list of Kings of the Five Kingdoms and of Lords/Kings in the North is pretty much identical to that of the books.
  • Celibate Hero: Guess who?
  • The Dragonslayer: The Spartan. He ends up killing nine in total (Vhaegar, Balerion, Cannibal, Dreamfyre, Caraxys, Vermax, Tyraxes, Vermithor and Silverwing).
  • The Dreaded: The Spartan, south of the Neck. Unfortunately, there's always someone who thinks he (or she) will be the one to finally defeat him. They soon learn the lesson (most times, it becomes their last lesson).
  • The Fundamentalist: Baelor I. He tried to force the Starks to convert to the Faith of the Seven, sent many septons and septas to attempt to convert the First Men, and culminated in attempting to force Cregan's heir to convert, forcing him to do menial jobs after stripping him of all that he carried with him when he (naturally) refused.
  • Groin Attack: Aegon IV tried to rape Cortana Stark. She answered by castrating him.
  • King in the Mountain: How the Spartan is considered in the North, with the Forward Unto Dawn as his mountain. He will only answer the calls of the King in the North when the North or the innocent are in danger. He only makes an exception with Cortana Stark (heavily implied to be the human body in which Cortana's consciousness was placed to stop her from going rampant).
  • The Kingslayer: The Spartan has killed three kings (Maegor the Cruel, Aegon II, Aegon IV) in two hundred years.
  • Laugh Themselves Sick: When Daeron I came to ask for the North's support in his campaign against Dorne, King Cregan Stark told him he would not involve the North in an unnecessary war. Then Daeron stated that the Spartan surely would aid him in his cause to unite the South. Reportedly, Cregan guffawed so hard that he had to be treated for chest pains.
  • Medieval Stasis: In spite of the Spartan's presence for several millenia, things do not seem to have changed that much. Justified because neither he nor Cortana can remain for long periods of time out of stasis to lead. He does, however, provide gunpowder weapons during the Dance of Dragons.
  • Megaton Punch: The Spartan. He utterly obliterated Maegor's head in one attack.
  • No-Sell: A good number of dragons tried to burn the Spartan alive. The fire does not even singe his armor, nor that of the Pelican.
    • During the Dance of Dragons, Prince Daemon Targaryen actually leaps from his dying dragon's back to hit the Spartan in mid-air with his Valyrian steel blade - only for Dark Sister to do nothing against his armor and leaving him to die from his subsequent great fall.
  • Pinocchio Syndrome: A variation, in that the Spartan puts Cortana's consciousness in Rickon (Cregan's heir) and Rhaena's second child, a girl the parents name Cortana. She acts like a human at first, but slowly appears to regain Cortana's memories.
  • Offered the Crown: At least twice, the Spartan was asked to become King of the Five Kingdoms. Both times, he refused, only staying in King's Landing until the proper heir could be crowned.
  • Superweapon Surprise: Aegon the Conqueror was certainly surprised when the legendary Spartan was actually real. Even more when he killed Vhaegar and Visenya and crippled Balerion.
  • Too Dumb to Live: All those Targaryens that thought they would be able to kill the Spartan. Aegon and Visenya (the first to try) get a pass, since they did not know of the Spartan's true martial prowess. Everyone else that tried after them (Maegor, Aegon II, Rhaenyra, etc.) does not.
    • Aegon IV. After the Spartan returns from what seemed to be certain death to save Cortana Stark from being unjustly executed (after Aegon tried to rape her), Aegon proceeded to rant and rave about how he would not stop until both Cortana and the Spartan were dead. He most certainly deserved getting riddled with bullets.
  • Wild Card: The Spartan's army during the Dance of Dragons. His first action was to save Prince Viserys Targaryen (Rhaenyra's son) and Jacaerys Velaryon (descendant of a Stark princess that married Aegon I), thus appearing to support the Blacks. The next was to defeat Elmo Tully's army, which was part of the Blacks, because it had been ransacking towns and forcing men to join the fight. As the Spartan said, his only worry was to protect the smallfolk that were being attacked by the nobles just because their lord was not on the right side.
  • Worthy Opponent: Aemon the Dragonknight for the Spartan. He becomes the only person that can claim to have defeated the Spartan (in a 'first-blood' duel in which the Spartan clearly held back).

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