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Halo: Justice League by G4dgetJunior reviews
After a slipspace incident during a fierce battle, Sierra 117 and some of his allies find themselves in the DC CW universe. However, they are not alone, Atriox and the banished have followed them. Can the UNSC's greatest hero save a new universe from destruction?
Crossover - Halo & Supergirl - Rated: T - English - Sci-Fi/Suspense - Chapters: 2 - Words: 6,652 - Reviews: 1 - Favs: 5 - Follows: 8 - Updated: 1h - Published: 8h - Master Chief/John-117, J'onn J./Martian Manhunter, Kara D./Supergirl, Arbiter
Final Frontier by Cipher32 reviews
For us the storm has passed, it's time to honor those who never return in this dreadful voyage. As human carved their loved ones' names to a stone pillar of remembrance, they carved ours' into their hearts as an utmost symbol of gratitude, and in them we would never be forgotten amidst time for it is the greatest way they honor us. UNSC Enterprise, requesting immediate recovery.
Crossover - Halo & Azur Lane/碧蓝航线 - Rated: T - English - Sci-Fi/Adventure - Chapters: 13 - Words: 158,583 - Reviews: 188 - Favs: 506 - Follows: 653 - Updated: 4h - Published: 1/21/2020 - OC, Enterprise, Cleveland, Vestal
The Bane of the Prophets by jabinker
In the world of the multiverse many characters from different worlds could be summoned changing the course of the events. Todays look into such possibility is a servant who was a friend, ally, an equal to the legendary Master Chief.
Crossover - Halo & Fate/stay night - Rated: M - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 7,055 - Favs: 2 - Follows: 2 - Published: 6h - Arbiter, Shirō E., Rin T., Illyasviel von Einzbern
HALO: JL by G4dgetJunior reviews
After a slipspace accident sends a UNSC Frigate and a Banished warship through a rift in space time, Master Chief, Arbiter and others find themselves In a brand new universe. Unfortunately, There are more threats on the horizon, Old and New. As well as some new allies. The Multiverse will never be the same again.
Crossover - Halo & Justice League - Rated: T - English - Sci-Fi/Angst - Chapters: 5 - Words: 6,613 - Reviews: 7 - Favs: 35 - Follows: 47 - Updated: 7h - Published: 11/20/2022 - Arbiter, Master Chief/John-117, Karen Starr/Kara Zor-L/Power Girl, J'onn J./Martian Manhunter
Full Circle by sleepycrawler1 reviews
The beginning marks the end, how truer have those words ever been until now. We stopped Truth and are firing Halo to exterminate the Flood, while also hightailing it as fast as we can back to the Portal to return home with all hands accounted. As Chief said "We'll head to the Portal and we'll all go home" Sadly nothing ever goes as planned.
Crossover - Halo & Nier - Rated: M - English - Sci-Fi - Chapters: 1 - Words: 3,154 - Reviews: 1 - Favs: 4 - Follows: 8 - Published: 13h - OC, Pascal
Halo: Un cuento de los Siete Reinos by freakmanvityaz reviews
En el año 2559/296 D.C., el UNSC inicia la colonización del recien descubierto sistema estelar "Omega Ascalon" en un intento por evacuar a supervivientes de los ataques de "Los Desterrados". Mientras tanto, en el continente occidental del planeta, sus habitantes pronto enfrentarán el cambio de reglas en el "Juegos de Tronos", cuando un lobo solitario vuelve al servicio activo.
Crossover - Halo & A song of Ice and Fire - Rated: M - Spanish - Sci-Fi/Fantasy - Chapters: 6 - Words: 50,785 - Reviews: 12 - Favs: 9 - Follows: 17 - Updated: 21h - Published: 2/12
Halo Welcome to New York, Part 2: Tales of Slender by SPARTAN-117-2
Slenderman was trapped in SCP-3008 for months. He was beaten by John-117. Now he's out for blood... Spartan blood.
Crossover - Halo & Slender - Rated: T - English - Horror/Sci-Fi - Chapters: 1 - Words: 96 - Favs: 2 - Follows: 2 - Published: 3/9
A Reaching Light by pro-meem-theus reviews
It's the Fall of Reach, the Covenant have won. Spartan B312, the last Spartan remaining on Reach, has fought tooth and nail to break the backs of the Fleet still present on Reach. However, we both know how it ends. The question is: What happens when the Traveller sees fit to bring back Reach's Hyper Lethal Vector?
Crossover - Halo & Destiny - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 812 - Reviews: 2 - Favs: 9 - Follows: 11 - Published: 3/8 - SPARTAN-B312/Noble Six, Ghost, Fallen
The Spartan Of Smallville by SSJ Lone Wolf reviews
Between the Insurrectionists and the Covenant, he thought he had done and seen it all. But after being transported to an alternate universe and settling down in Smallville, Spartan-B312 realizes that his toughest challenge is about to begin...High School. He'll soon learn that there is more to this quiet little town than he initially thought.
Crossover - Smallville & Halo - Rated: M - English - Chapters: 4 - Words: 26,023 - Reviews: 104 - Favs: 202 - Follows: 228 - Updated: 3/8 - Published: 8/18/2022 - Clark K./Superman, Lex L., SPARTAN-B312/Noble Six
La nueva era de la humanidad, Libro 1 Invasiones by Type-universe
El gran Reich renacido de las cenizas después de la guerra Humano-Covenant, unificará a la humanidad a través del multiverso con la intención de unificar a toda la humanidad a través del multiverso, a cualquier costo que sea necesario
Crossover - Halo & Arifureta Shokugyou de Sekaisaikyou/ありふれた職業で世界最強 - Rated: M - Spanish - Sci-Fi/Fantasy - Chapters: 3 - Words: 27,389 - Updated: 3/8 - Published: 2/1
Drop into Hell by Lighting wolf knight reviews
They have a lot more to do before its done. Rated T for violence, death, and profanity.
Crossover - Halo & Mass Effect - Rated: T - English - Adventure/Romance - Chapters: 3 - Words: 11,962 - Reviews: 1 - Favs: 16 - Follows: 21 - Updated: 3/8 - Published: 2/3 - Miranda K., OC, Admiral Hackett, Shepard
BattleTech: Combat Evolved by IX404 reviews
While fleeing from the Inner Sphere following the Amaris Coup, the Exodus Fleet discovers an object out in the inky blackness of space. Little does General Kerensky or his sons know is that they will soon be within the center of a conflict that will decide the fate of Humanity and place the Star League-in-Exile at the forefront of the conflict.
Crossover - Mechwarrior/Battletech & Halo - Rated: T - English - Sci-Fi/Drama - Chapters: 20 - Words: 103,096 - Reviews: 264 - Favs: 220 - Follows: 225 - Updated: 3/8 - Published: 8/25/2022 - Master Chief/John-117, A. J. Johnson, Arbiter, 343 Guilty Spark
The Sins of our Fathers by MarkerMagnum reviews
Unknown to the Citadel Council, the Human-Covenant war nears its vicious end. Miranda Keyes is seconds too slow. Delta Halo fires, leaving UNSC space as a lifeless snapshot in time. The Citadel must morn the loss of a civilization they never knew. Crossposted by myself, Jabber the very wocky on Ao3.
Crossover - Halo & Mass Effect - Rated: T - English - Drama/Sci-Fi - Chapters: 4 - Words: 29,995 - Reviews: 114 - Favs: 340 - Follows: 491 - Updated: 3/7 - Published: 2/11 - Master Chief/John-117, Miranda K., Cortana
The Great Apocalyse War of the Stars by FrozenIceKing
A powerful ancient entity escapes imprisonment threatening to destroy everything Harry Potter holds dear, with the help of his friends and the Masterchief aims to stop her yet, would he be able to stop the ancient entity before all is lost and corrupted beyond recognition?
Crossover - Harry Potter & Halo - Rated: T - English - Romance/Adventure - Chapters: 1 - Words: 3,766 - Favs: 2 - Follows: 3 - Published: 3/6 - Harry P., Cho C., Master Chief/John-117, Arbiter
War of the Old Ones by Ian the Mechanic reviews
In forgotten ages past, two near eldritch forces vied for the very life essence of the Galaxy. Unknown to the young races, that war is still ongoing. how can the UNSC, the Citadel Council or the Covenant hope to stand against such forces, when they are still embroiled in their own petty squabbling? How could they hope to survive the War of the Old Ones?
Crossover - Mass Effect & Halo - Rated: M - English - Sci-Fi/Horror - Chapters: 17 - Words: 89,915 - Reviews: 101 - Favs: 211 - Follows: 308 - Updated: 3/6 - Published: 2/21/2022
Homeward Bound:The Human-Covenant War by Johnnieboy11 reviews
As the Human-Covenant War rages on in the year 2552, the UNSC gathers the best of its SPARTANs on Reach in a final bid to buy themselves time against the tide of the Alien Hegemony.. In the meanwhile, a Patrol Ship orbiting the outer areas of the Epsilon Eridani system finds an unknown vessel as it floats aimlessly. Aboard it may be the key to saving humanity, second to Chief.
Crossover - Halo & SIGNALIS - Rated: T - English - Angst/Sci-Fi - Chapters: 12 - Words: 63,737 - Reviews: 35 - Favs: 62 - Follows: 86 - Updated: 3/5 - Published: 2/7 - [Elster/LSTR-512, Ariane Yong] Master Chief/John-117, Cortana
Harry Potter got trained by Driver1985 reviews
On the night Harry would have been dropped off by his Aunt, Dumbledore had someone else in mind. What if Harry was taken in by other strong people and they even decided to train him? Trained to be a Warrior by Wolves and the UNSC, he will change the world. OP, smart, trained Harry, small harem double cross with witcher and halo
Crossover - Harry Potter & Halo - Rated: M - English - Fantasy/Sci-Fi - Chapters: 69 - Words: 330,127 - Reviews: 231 - Favs: 570 - Follows: 685 - Updated: 3/5 - Published: 9/30/2021 - [Harry P., Hermione G., Daphne G.] Master Chief/John-117
The restoration of the UNSC by Warwolff2003 reviews
Reach has Fallen and the newly promoted Captain Jacob Keyes has taken his small fleet and st course for Earth. However, this is not the Earth those in the UNSC remember. This is my version of a similar story by originally by Samsara Sage which was adopted by Ultimate Deathsaurer 2
Crossover - Stargate: SG-1 & Halo - Rated: T - English - Sci-Fi - Chapters: 12 - Words: 43,659 - Reviews: 85 - Favs: 144 - Follows: 218 - Updated: 3/5 - Published: 12/22/2022 - S. Carter, J. O'Neill, Master Chief/John-117, J. Keyes
A New Path by GeorgeQuartz reviews
Year 2560, the UNSC Infinity and what is left of her crew is fighting for its life against countless Banished Invaders. Deep inside the ship, two pilots and friends have to fight their way through it all to their Longsword Interceptor. A one-in-a-million chance incident with a Forerunner Artefact brings them to a different fight with a different enemy, just trying to get back home.
Crossover - Halo & Star Wars Rebels - Rated: T - English - Sci-Fi - Chapters: 5 - Words: 47,435 - Reviews: 25 - Favs: 71 - Follows: 87 - Updated: 3/5 - Published: 9/6/2022 - T. Lasky, OC, Ezra B., Sabine W.
Summoned From The Stars by ProfessorZooms reviews
One day, visitors from the stars came to our world...
Crossover - Halo & Japan Summons/日本国召喚 - Rated: M - English - Sci-Fi/Fantasy - Chapters: 2 - Words: 9,707 - Reviews: 13 - Favs: 45 - Follows: 71 - Updated: 3/4 - Published: 2/3
Star Wars: Tales of the Infinity's Odyssey by IX404 reviews
While many know of the story of Lasky, the Master Chief and his compatriots, few people know of the stories that happened during these major events. These are the stories of the men and women that also experienced the Odyssey of the Infinity.
Crossover - Star Wars & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 13 - Words: 70,340 - Reviews: 74 - Favs: 145 - Follows: 157 - Updated: 3/4 - Published: 11/25/2022 - G. Marek/Starkiller, Jyn E., T. Hood, C. Halsey
The Jade Demon of Konoha by Azrael The Deplorable reviews
John-117 has defeated the Didact, at a cost. Cortana falls deep into Rampancy and has a broken body. He must rise to defend the primitive populace from the scattered remnants of the Knights and Covenant forces. Now John has help from distinct Forerunner AI and magic. Or chakra, as the populace calls it.
Crossover - Halo & Naruto - Rated: M - English - Sci-Fi/Hurt/Comfort - Chapters: 1 - Words: 7,808 - Reviews: 3 - Favs: 11 - Follows: 17 - Published: 3/4 - Master Chief/John-117, Cortana, Naruto U., Kakashi H.
Demons of the Holy Grail by jabinker reviews
Deep in the multiverse in the world of the Fate series many characters are summoned, some amazing and good, others terrifying and destructive. This one only hungers to expand. (P.S. Need more stories that have the Flood in them)
Crossover - Halo & Fate/stay night - Rated: M - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 4,161 - Reviews: 6 - Favs: 8 - Follows: 9 - Published: 3/3 - Gilgamesh, Irisviel vE., Arturia Pendragon - Complete
Blade of truth by Lighting wolf knight reviews
As the truth is revealed, a war shatters the covenant and its allies even more. Rated T for violence, death and profanity.
Crossover - Star Wars & Halo - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 816 - Reviews: 1 - Favs: 5 - Follows: 3 - Published: 3/3 - Arbiter, OC
United Freedom by F35B reviews
Join the USTG and its many service members in a fight against the Republic to free the Milky Way from Andromedan Influence and liberate the CIS from its puppet strings. First Story, please R&R would appreciate it greatly, (Edit 2/10/22) PM me any plot suggestions you may have and I am taking weapon suggestions as well through reviews and PM.
Crossover - Star Wars & Halo - Rated: M - English - Sci-Fi - Chapters: 9 - Words: 44,867 - Reviews: 37 - Favs: 89 - Follows: 117 - Updated: 3/3 - Published: 1/3 - OC
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