crossoverstories
172 stories
"The Razor's Rebirth: Fire and Blue" A Battlestar Galactica x Avatar Crossover  by Chris9417
Chris9417
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When the Battlestar Pegasus executes a desperate blind jump to escape Cylon annihilation, Admiral Helena Cain finds herself orbiting a world that shouldn't exist: Pandora. Damaged and low on resources, the "Razor" of the Colonial Fleet meets her match in Colonel Miles Quaritch and the lethal corporate greed of the RDA. But the true challenge lies beneath the canopy. After a brutal crash-landing in the Hallelujah Mountains, Cain is taken captive by Tsu'tey, the fierce and prideful warrior prince of the Omatikaya. In a world defined by a spiritual connection she doesn't understand, Cain must navigate a treacherous double life-using an experimental Avatar body to infiltrate the Na'vi while fighting a mutiny aboard her own ship. As the RDA prepares to burn the forest to the ground, the cold Admiral and the savage warrior discover a forbidden, primal bond that transcends species. To save a world that isn't hers, Helena Cain must decide if she is willing to sacrifice her humanity, her rank, and her ship to become the predator Pandora needs.
Ben & Jen 10 (my version) by Reaperwolf482
Reaperwolf482
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inspired by ben and jen 10 fanfiction, as in this ben is cloned and his clone is sent to another universe where he meets jen during the events of and then there were 10 and he ends up falling for her, and he also gets a harem as he relives the summer but once alien force comes things get serious...or more hot really.(also ben still has his omnitrix but he gets, a chaquetrix which gives him a alien harem he can summon ben x jen ben x harem ben x chaquetrix harem
 "Echoes of Eywa: A Cortana x Neytiri Odyssey" A Halo x Avatar Crossover  by Chris9417
Chris9417
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Drifting alone through the void, Master Chief John-117 awakens to a familiar, fading voice-Cortana, his AI companion, unraveling under the creeping madness of rampancy. Their derelict ship crashes on Pandora, a world of bioluminescent beauty and ancient secrets, where humans, Na'vi, and Forerunner relics collide in a deadly dance. Amid the chaos of RDA mercenaries, alien predators, and whispers of a cosmic intelligence, an impossible bond blooms between Cortana and Neytiri, the fierce Na'vi huntress. As rampancy threatens Cortana's very existence, love becomes survival, and the threads of machine and flesh, human and alien, intertwine in the sacred neural web of Eywa. A slow-burn, intimate journey of passion, discovery, and transcendence, where the digital heart finds flesh, and two worlds unite in defiance of war and mortality. Content Warning: This story contains graphic violence, intense action sequences, sexual content between women, body transformation, AI consciousness exploration, and themes of trauma and loss. Suitable for mature audiences.
"Blue Chaos: Powder & Grace" An Avatar x Arcane AU Crossover Story  by Chris9417
Chris9417
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In a alternate world where Zaunite ingenuity meets the floating jungles of Pandora, a violet-eyed Na'vi girl named Powder-rebellious, brilliant, and dangerously inventive-learns that chaos can be both a weapon and a bond. When Dr. Grace Augustine returns to Pandora, she finds herself drawn to the storm-riding girl whose explosive inventions hide a haunted heart. As RDA forces hunt them, Powder and Grace must navigate skybound battles, forbidden magic, and the raw pull of a connection stronger than fear itself. In a world that fears what they don't understand, can love survive the storm-and can a little chaos save them all?
"Pandora's Hive" An Alien x Avatar Crossover Story  by Chris9417
Chris9417
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When Ellen Ripley's shuttle crashes on Pandora, she awakens to a world both breathtaking and deadly. Alone and hunted, she discovers the ultimate predator-the Xenomorph-has adapted to the planet's vibrant ecosystem. Caught between the Na'vi clans and a relentless alien threat, Ripley must forge an uneasy alliance with Jake Sully and Neytiri to stop a terror that could consume Pandora itself. Survival, sacrifice, and the balance of life hang in the balance. Content Warning: ⚠️ Contains intense sci-fi horror, graphic violence, alien parasitism, body horror, and thematic elements of trauma and survival. Not suitable for younger readers.
Danny Phantom: Ghostly Evolution by CartoonNetwork90sfan
CartoonNetwork90sfan
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After Phantom Planet/Danny decides to take a vacation to forget the hurt from Sam cheating on him. Later, in his despair and betrayal from his ex-girlfriend unlocks a new ghost power among the darkness. During his vacation travel that leads him to Bayville, finding new friends and enemies along the way.
The Angelic Red Dragon Emperor by AlexanderLisenby
AlexanderLisenby
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    Parts 18
After the Battle with 666, a reincarnated Angel and now the new user of Boosted Gear, ended up in a new world that's similar yet very different from his own, but becomes Hell's own hero, Guardian Angel. Oh the irony DXD, Helluva Boss, & Hazbin Hotel crossover Rated M for Mature
A Golden Child and a Hellish Hotel (Hazbin Hotel x Warhammer 40k) by soldierErik
soldierErik
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In the dark and brutal confines of the Warhammer 40K universe, where hope is an empty word and the future is bathed in blood, Charlie Morningstar-the princess of Hell-finds something unexpected: a fragment of pure light, a life still uncorrupted. The Star Child, the last vestige of goodness born from the soul of the Emperor of Mankind, is in danger... and Charlie is not willing to let it be lost. Determined to break the cycles of violence that created it, Charlie takes it to her world: Hell. Her goal is as noble as it is absurd-to raise what could be the empire's only hope as a good person in the least suitable place for it. With demons as neighbors, lost souls as nannies, and a hotel full of forced redemption, raising a holy child becomes a hellish odyssey. Literally. Between tenderness, chaos, and comic existentialism, Charlie will challenge the rules of hell, the empire, and destiny itself. Can this child bring about a better future? Or will he end up being the most powerful and sarcastic being in the multiverse? P.S.: The characters are not mine; all rights belong to "VivziePop" and Games Workshop.
The Galra on Pandora by _moo_ball_
_moo_ball_
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    Parts 11
Keith, the previous red paladin, found his way to the moon Pandora. What will the navi think of this strange sky person?
Rocket and the way of the fists by HateBr0
HateBr0
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For an unknown reason rocket was transported to another universe, where he meets someone that instantly peaks his interest. Without his guns, explosives, and tech. will he be able to adapt and learn to love it here. Read to see where this story goes.