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Guardians of the Multiverse (That Time My OP Portal Skill Broke All of Fiction) by TheLonelyRanger
Fandoms: Star Wars: The Clone Wars (2008) - All Media Types, Star Wars - All Media Types, Star Wars: Rebels, Halo (Video Games) & Related Fandoms, Ratchet & Clank, Re:ゼロから始める異世界生活 | Re:Zero Starting Life in Another World (Anime), Star Trek: Enterprise, Star Trek: The Next Generation, Star Trek: Voyager, Marvel Cinematic Universe, The Culture - Iain M. Banks, ダンジョンに出会いを求めるのは間違っているだろうか | DanMachi | Is It Wrong to Try to Pick Up Girls in a Dungeon? (Anime), Shingeki no Kyojin | Attack on Titan, Mass Effect Trilogy
03 Nov 2025
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Summary
OC MC. OC x Ahsoka. OC POV mostly. This is a huge multi crossover from an ai dungeon playthrough. Edited of course. Several factions find themselves on The Liminal Nexus, a forerunner shield world that connects the multiverse. The Main Antagonist is the banished, the Didact, the flood, and The Witch Cult, though there are others. The POV is mostly Bubba the OC but eventually I found out how to do other POVs in the ai dungeon game, much later. The characters are shown on a bit of a rotating basis through the MCs POV. While the story itself generaly rotates between issue, talks, fighting and ealing with issue, resolution, downtime, training, issue, repeat.
Trauma, relationships, Sci-Fi, action adventure, huge cast, therapy, big battles, sparring, ship combat, found family.Series
- Part 1 of Guardians of the Multiverse
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In 2556, the UNSC Vigilant Dawn drifts above an uncharted Forerunner world — a planet that doesn’t exist in any FleetCom archive.
Dr. Callum Rhys, a sleepless xeno-linguist under ONI contract, studies a recovered artifact that hums like a heartbeat and dreams like it remembers. As the ship’s systems begin to flicker and the crew pretends nothing is wrong, Rhys starts to hear the resonance threading through the hull — a signal older than the Halo rings, and aware of him in return.
He thought he was cataloguing a relic.Series
- Part 1 of The Resonance Series
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It is late 2560, humanity is teetering in the wake of Cortana's Created Uprising and the war against the Banished. Sydney is nuked to dust by a Guardian, leaving much of the UNSC's command structure vacant. Serin Osman has fallen to her lust for power, though it didn't last long.
Amidst the chaos, an ONI admiral and her 14 Spartan volunteers, veterans of Zeta Halo, take full control of the agency and begin steering the course of humanity to its long-overdue destiny.
However, fate had other plans for these Spartans.
Their journey will turn into a legacy that spans beyond their reality.
Series
- Part 1 of Halo: Multiverse
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Bun-25, a happy go-lucky spartan 3, who usually ends up at the opposite end of the predations of the universe. Poor guy can never catch a break. (Smut with a side of story.)
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Lightning & Thunder by Project ISTARI (Project_ISTARI)
Fandoms: Halo (Video Games) & Related Fandoms
30 Oct 2025
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As the Battle of Meridian drags on, a Spartan III-Gamma and her Spartan-IV Mentor take on a daring mission and impossible odds, seeking to end the conflict in weeks rather than months. But as the ancient adage goes: Who Dares, Wins
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Spiritual "sequel" to Halo:Reach.
The military bastion Reach has fallen to the Covenant. Untold millions perished in the fighting, devastating the UNSC and leaving its highest echelons of command reeling in the aftermath. Despite humanity's best efforts, the writing is on the wall: the Covenant will be at Earth soon, Cole Protocol be damned. What remains of the UNSC's standing military assets have been redeployed to Sol as part of Operation: CASTLE in an effort to reorganize, bolster defenses, and lay the groundwork for an eventual evacuation. Humanity has laid all its cards on the table.
However, hidden within the background of CASTLE, amid the seemingly endless personnel transfers and deployment orders, a handpicked group of warriors from SPARTAN-III Gamma Company have been pulled from Onyx. Fresh out of a hellish SPARTAN-III training regimen, the young spartans of Team Tachi are eager to test themselves in their first true mission - to assassinate a certain high-ranking Sangheili fleet admiral.
But plans change. They always do. And when the Covenant arrive at Earth in force, Team Tachi will have to lay it all on the line in the ultimate battle for the fate of humanity.
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Annyastasia awakens in an unknown ship in an unknown place. No longer on Reach among her fellow Washouts, she discovers her next assignment and the secrets that will lay within it.
The alternative path that continues from Washout. For the main path that also continues from Washout, look out for Finem Somnium.
Series
- Part 4 of Deus in Absentia
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Annyastasia wakes up in the bushes under the window she took flight from. As she makes her daring escape off-planet, her mind is filled with one task:
Find Kurt, save him
Main path that splits off from Washout. For the alternative path, Read Shadow of Onyx.
Series
- Part 5 of Deus in Absentia
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Dead wolf by LincyGirl
Fandoms: Halo (Video Games) & Related Fandoms, Pocket Monsters | Pokemon - All Media Types
26 Oct 2025
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After her death on Reach, Spartan Lillian-B312 wakes up in a peaceful Pokémon world where children journey freely, everyone trusts Pokémon implicitly, and no one locks their doors. But beneath the bright smiles and Trainer School songs, something is wrong.
And only she sees it.
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Noble Six is found by ONI five years after he went MIA, and two years after he was rescued by the Sangheili of the colony Ash'nt Luk'a.
After being convinced to aid the UNSC against covenant remnants, he returns to the fight, bringing his close friend, Naht'aa Keldamee.
The two warriors begin to show how well spartans and sangheili can work together, and continue to show the benefits of cross-species cooperation as their team expands to include a spartan II, a Mgalekgolo, a spartan IV, and a T'vaoan.(This is just OC lore that i toy with in my head that ive decided to write down for once. Also this *is* my first fic so tags and the like will be updated down the line, if this goes anywhere)
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The Terran Calamity by F15E_Strike_Eagle
Fandoms: Mass Effect - All Media Types, Halo (Video Games) & Related Fandoms
22 Oct 2025
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After another First Contact gone awry, the UTF and UTSC is unwillingly introduced to another portion of the galaxy under the rule of the Citadel Council. Tensions between the 2 factions are high, but diplomacy keeps cooler heads. However it is clear that 26 years later that ice is melting. Fast. But one question remains... Who will crack first?
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The Little White Sheep and Her Spartan by John2851
Fandoms: Sonic the Hedgehog (IDW Comics), Halo (Video Games) & Related Fandoms, Sonic Boom (Cartoon), Sonic Underground
14 Oct 2025
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Dr. Eggman's robots have planted its invasion in one of the resistance's supply source and Sonic and company had their hands tied as to how are they going to take it back. That is until they decided to unthawed their one and only legendary Spartan who has managed to win the heart of a certain sheep, who have only heard stories about him and got the opportunity to see him in action. Can Lanolin keep her mind of fighting Eggman with the Resistance or will her heart starts to talk and want to be apart of her Spartan's life?.
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You Heard the Music, Time to Dance by BouncyOrb
Fandoms: Halo (Video Games) & Related Fandoms
13 Oct 2025
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After the night they spent together, to everyone's surprise, Irena-017 stays assigned to Nate's squad on board the UNSC Texas Red. Neither of them were prepared to see each other again, not to mention spending this much time together. With a mission set in Insurrection territory coming up, Nate and Irena
Series
- Part 2 of Nate & Irena
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The Exiles:A New Power by Johnnieboy11
Fandoms: Halo (Video Games) & Related Fandoms, Mass Effect Trilogy, Mass Effect - All Media Types
13 Oct 2025
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(Imported from Fanfiction dot net)The beginning of the Battle For Earth signaled the start of the final, bloodiest campaign of the Human-Covenant War. Hastily, a plan is put into motion and an Ark Fleet, composed of a dozen Phoenix-class vessels and their escorts, makes the jump out of system. Either interference, or malfunction, causes their arrival to a new Galaxy, where new threats lurk just around the corner.
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Jacob Moss, an average ODST, battles his way through the streets of New Mombasa. After losing contact with his squad and presuming them dead he teams up with an unlikely ally, Ozaell'Tir, one of the very few female spec ops. A betrayal, ONI secrets, and a delicious pie are all that awaits them in their incursion.
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The Starlight Protocol by Ashen_Sunsinger
Fandoms: Destiny (Video Games), Halo (Video Games) & Related Fandoms, Grand Theft Auto Series (Video Games), Helldivers (Video Games)
12 Oct 2025
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Phoenix rises one morning long after The Final Shape to rediscover an old gift that brings him far from home yet closer to it. Join the Warlock as he meets old faces in the new worlds he travels to, uncovering the secrets of his gift, the destruction left in its wake, and the protocols succeeding it. Can he remember his way through the unknown, or will it always have been for naught?
https://open.spotify.com/playlist/59YmjhFs3w31BNQCZc0vcG?si=5f9ad54e4242476f
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The Song of Infinity by Johnnieboy11
Fandoms: Star Wars: The Clone Wars (2008) - All Media Types, Halo (Video Games) & Related Fandoms
11 Oct 2025
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(Posted from Fanfiction.net account) As the battle of Christophsis is ongoing, a new faction emerges over the crystalline battlefield. Confusion, worry and fear permeate the Republic lines until a first shot is fired in anger by the Confederacy. A change stirs in the Force, the Reclaimers are awakening and the Galaxy at large is powerless to stop them.
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A bunch of short stories about Adara-E24(my oc)
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Halo: Spaceborne Faunas!! by GyroJapster
Fandoms: Stellaris (Video Game), Halo (Video Games) & Related Fandoms
08 Oct 2025
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What if Humanity in Halo, instead of just the "Citizen Service" and "Distinguished Admiralty" civics, also had the “Beastmasters” civic? Now you’ve got a race that weaponizes their pets to annihilate their enemies. Glory to Bubbles, the unstoppable space amoeba; and its adopted space (dragons) drakes!
Wait—there’s more? What do you mean there's more Space Wales?
Tiyanki? Cutholoids? Voidspawn? Crystalline Entities?!
You know what that means…
Gotta catch them aaaalll~!!
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The Spartan From Themyscira by FoundUnknown01
Fandoms: Halo (Video Games) & Related Fandoms, Batman - All Media Types, Superman - All Media Types, Justice League - All Media Types, Wonder Woman - All Media Types, WildC.A.T.S. (Comics)
02 Oct 2025
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For the last two thousand years, Themyscira has isolated itself from the rest of mankind. Building itself up and ignoring the plights of the world which surrounds it. Unfortunately, their calm is shattered when a strange craft falls to earth on the Eastside of their island. Leading to the first man to ever grace their shores since they isolated themselves from the world.
How will they react to this strange man and his AI partner, who are far more concerned with conspiracies plaguing the outside world and returning to their home? Even if it means dragging their civilization into the light of the modern world.