keiranhalcyon2010
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Joined 06-16-06, id: 1068353, Profile Updated: 11-26-17
Author has written 11 stories for Buffy X-overs, Stargate: SG-1, Buffy: The Vampire Slayer, Avatar: Last Airbender, Bleach, Mechwarrior/Battletech, StarTrek: Deep Space Nine, Worm, Star Wars: The Clone Wars, StarTrek: Enterprise, and Mass Effect.

Hi there folks.

I love to write. Sci-Fi and Fantasy is my genre.


Current favorite fandoms:

Worm

Star Wars

Star Trek


Currently Writing

Star Wars: The Force Wills


Current Gaming

Eve Online

Warframe

Skyrim

Fallout 4


Star Wars

Flowing through all
there is Balance
There is no Peace
without a Passion to Create

There is no Passion
without Peace to Guide
Knowledge stagnates without
the Strength to Act

Power blinds
without the Serenity to See

There is Freedom in Life
There is Purpose in Death
The Force is all Things
I am the Force

- Gray Jedi Code


Stay tuned for updates.

May God and the Goddess smile upon you.

Keiran Halcyon

Sort: Category . Published . Updated . Title . Words . Chapters . Reviews . Status .

With Grace and Elegance by Dull Silver reviews
When Taylor Hebert controlled bugs, she killed a god. When she can create soul severing swords with abilities so numerous and powerful that the Endbringers themselves are left in terror? Run, god. Run far, far away.
Crossover - Bleach & Worm - Rated: M - English - Adventure - Chapters: 15 - Words: 74,763 - Reviews: 443 - Favs: 992 - Follows: 1,187 - Updated: 2/21 - Published: 11/15/2017 - Skitter
Administration by Cyborg0 reviews
Some capes manifest powers that are very different from their shards, and some capes receive something very similar to the original. Taylor carries the Administrator shard, used to process and control informational systems with no upper limit. What happens when the powers she gets are a lot more direct than bug control?
Worm - Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 34,198 - Reviews: 151 - Favs: 848 - Follows: 1,123 - Updated: 2/9 - Published: 7/19/2016
Mass Effect: Human Revolution by IgnusDei reviews
Adam Jensen finds himself in a time only dreamed of in vids, humanity is now part of a great galactic community that fears synthetics, and he struggles to find his place within it. Note: Primarily a DX/ME crossover, with elements borrowed and integrated from other Square Enix franchises.
Crossover - Deus Ex & Mass Effect - Rated: M - English - Sci-Fi/Supernatural - Chapters: 81 - Words: 817,277 - Reviews: 2251 - Favs: 2,222 - Follows: 2,309 - Updated: 2/1 - Published: 3/12/2012
Dreaming of Sunshine by Silver Queen reviews
Life as a ninja. It starts with confusion and terror and doesn't get any better from there. OC Self-insert. No pairings.
Naruto - Rated: T - English - Adventure - Chapters: 144 - Words: 686,696 - Reviews: 20872 - Favs: 13,699 - Follows: 13,463 - Updated: 1/19 - Published: 9/2/2011 - Naruto U., Shikamaru N., OC
Visited by a Doctor by Tangerine-Alert reviews
At a young age Harry met someone called the Doctor, he became his friend. Over the course of his school life the Doctor returned, in each of his incarnations. Leaving Hogwarts Harry continues to have adventures, visited upon by the Doctor's influences.
Crossover - Doctor Who & Harry Potter - Rated: T - English - Drama/Sci-Fi - Chapters: 93 - Words: 739,956 - Reviews: 1299 - Favs: 2,021 - Follows: 1,976 - Updated: 1/15 - Published: 3/14/2009 - Harry P.
Psi Effect by Cap'n Chryssalid reviews
A fun-loving asari mercenary finds herself a little in over her head when she ends up abducted by terrifying aliens from beyond the galactic frontier. These asari-like creatures call themselves 'humans.' They seem to be secretly nosing about on the borders of known space, acting through proxies, conducting covert operations, and they've got a deal for an enterprising asari...
Crossover - X-Com & Mass Effect - Rated: T - English - Humor/Sci-Fi - Chapters: 43 - Words: 387,570 - Reviews: 1324 - Favs: 2,961 - Follows: 3,473 - Updated: 1/2 - Published: 7/19/2014 - U. Wrex, Daro'Xen, Shepard (F), OC
Deal with a Devil by Silently Watches reviews
She was an agent of Evil who regretted her choices. He was a child with a destiny too heavy for his shoulders. Is the Wizarding World ready for a Boy-Who-Lived influenced by a reforming Fallen Angel? …Probably not. NOT Harry/Lash
Crossover - Harry Potter & Dresden Files - Rated: M - English - Adventure/Fantasy - Chapters: 32 - Words: 179,494 - Reviews: 2418 - Favs: 2,963 - Follows: 3,203 - Updated: 12/25/2017 - Published: 4/15/2015 - Harry P., Lash - Complete
The Havoc side of the Force by Tsu Doh Nimh reviews
I have a singularly impressive talent for messing up the plans of very powerful people - both good and evil. Somehow, I'm always just in the right place at exactly the wrong time. What can I say? It's a gift.
Crossover - Star Wars & Harry Potter - Rated: T - English - Fantasy/Mystery - Chapters: 22 - Words: 182,881 - Reviews: 5935 - Favs: 11,679 - Follows: 13,436 - Updated: 11/6/2017 - Published: 9/6/2012 - Anakin Skywalker, Harry P.
Back Again, Harry? by Jedi Buttercup reviews
WIP. Harry makes a different choice in King's Cross and is given the double edged gift of a second chance. Time Travel AU, DH canon.
Harry Potter - Rated: T - English - Drama - Chapters: 20 - Words: 74,412 - Reviews: 3509 - Favs: 7,519 - Follows: 10,106 - Updated: 1/12/2017 - Published: 7/31/2007 - Harry P., Ron W., Hermione G.
A Protector's Pride by NeoRyu777 reviews
What if Ichigo had handled his Inner Hollow problem like he had everything else thrown his way? Instead of running from it, he faced it head-on? Rated M for future graphic scenes.
Bleach - Rated: M - English - Chapters: 84 - Words: 573,294 - Reviews: 5925 - Favs: 7,090 - Follows: 5,445 - Updated: 9/24/2015 - Published: 4/18/2009 - Ichigo K. - Complete
The Daddy Thing by Ruinous Crow reviews
Kushina's early demise changes everything. Who said that mothers were more important than fathers?
Naruto - Rated: T - English - Family/Hurt/Comfort - Chapters: 12 - Words: 101,260 - Reviews: 760 - Favs: 3,426 - Follows: 2,583 - Updated: 9/19/2015 - Published: 1/28/2012 - Naruto U., Minato N. - Complete
Harry Potter and the Nightmares of Futures Past by S'TarKan reviews
The war is over. Too bad no one is left to celebrate. Harry makes a desperate plan to go back in time, even though it means returning Voldemort to life. Now an 11 year old Harry with 30 year old memories is starting Hogwarts. Can he get it right?
Harry Potter - Rated: T - English - Adventure/Romance - Chapters: 42 - Words: 419,605 - Reviews: 15225 - Favs: 22,766 - Follows: 22,361 - Updated: 9/8/2015 - Published: 10/28/2005 - Harry P., Ginny W.
Divergent Paths by Rigil Kent reviews
Two officers, believed killed in action, are stranded on a prewarp planet and must work together to survive while the rest of the NX-01 crew learn to carry on without them. AU season 2-4, Very TnT.
StarTrek: Enterprise - Rated: T - English - Adventure/Drama - Chapters: 125 - Words: 293,167 - Reviews: 2162 - Favs: 365 - Follows: 406 - Updated: 6/29/2015 - Published: 8/9/2007 - [T'Pol, C. Tucker] [J. Archer, E. Hernandez] - Complete
The Terran Jedi by The Dark Scribbler reviews
The sequel to Jedi Harris. Xander and his fellow Jedi battle on. The latest chapter is up at long last!
Buffy X-overs - Rated: K+ - English - Adventure - Chapters: 49 - Words: 487,914 - Reviews: 1792 - Favs: 1,434 - Follows: 1,325 - Updated: 6/11/2015 - Published: 10/30/2005
Elda Kundu, Kurutar: A Wizard's Tale by Jess S1 reviews
During the summer after fourth year, Harry makes an innocent wish that takes him to a different world. He needs to find a way home, but first he has to decide where his home really is... LOTR/HP. There & Back Again - Rewritten
Book X-overs - Rated: T - English - Adventure/Humor - Chapters: 7 - Words: 127,620 - Reviews: 345 - Favs: 959 - Follows: 1,082 - Updated: 6/5/2015 - Published: 7/17/2008
Message in a Bottle by Angry Hermione reviews
A life of regret and an endless, devastating war causes Harry to do the unthinkable... meddle with time. Can he rewrite the past or will his efforts be in vain? - AU - HHr - *Warning, abuse alert!* - updates Indefinitely postponed -Gomen-
Harry Potter - Rated: M - English - Drama/Romance - Chapters: 20 - Words: 97,162 - Reviews: 1085 - Favs: 1,435 - Follows: 2,017 - Updated: 4/2/2015 - Published: 11/22/2006 - Harry P., Hermione G.
Harry Potter and the Methods of Rationality by Less Wrong reviews
Petunia married a biochemist, and Harry grew up reading science and science fiction. Then came the Hogwarts letter, and a world of intriguing new possibilities to exploit. And new friends, like Hermione Granger, and Professor McGonagall, and Professor Quirrell... COMPLETE.
Harry Potter - Rated: T - English - Drama/Humor - Chapters: 122 - Words: 661,619 - Reviews: 33939 - Favs: 22,149 - Follows: 17,017 - Updated: 3/14/2015 - Published: 2/28/2010 - Harry P., Hermione G. - Complete
A Tale of Transmigration by CrashLegacy reviews
For Taylor Hebert, death was just the beginning. Reincarnated into an alternate earth version of herself she awakens to find herself trapped in a very familiar locker. Now armed with knowledge of her previous life and the ability to not just control bugs but also manipulate their biology, Taylor sets off to do what she always wanted to: be a superhero. Spoilers abound; sorry.
Worm - Rated: T - English - Chapters: 13 - Words: 198,980 - Reviews: 653 - Favs: 2,438 - Follows: 2,598 - Updated: 3/5/2015 - Published: 12/9/2013 - Skitter, Aegis, OC
Retsu's Folly by nuhuh reviews
It all goes wrong when Dumbledore gives Harry the choice to go back and fight Voldemort or move on. Harry is taken before he can make that choice and is thrown in an unexpected afterlife. Now he is on a mission to fight his way back to his own world.
Crossover - Harry Potter & Bleach - Rated: M - English - Adventure/Mystery - Chapters: 13 - Words: 106,637 - Reviews: 1324 - Favs: 3,596 - Follows: 3,667 - Updated: 11/18/2014 - Published: 11/28/2009 - Harry P., R. Unohana
True Warriors Never Die by Kenchi618 reviews
With enough time anyone can call themselves a master of life, but no matter how much time goes by one cannot truly understand existence as a whole without first having experienced death. How will one blond handle his brush with it? - "Wait... what?"
Crossover - Naruto & Bleach - Rated: M - English - Adventure - Chapters: 34 - Words: 388,985 - Reviews: 4203 - Favs: 6,608 - Follows: 5,673 - Updated: 10/16/2014 - Published: 1/30/2011 - Naruto U.
Forging the Sword by Myst Shadow reviews
::Year 2 Divergence:: What does it take, to reshape a child? And if reshaped, what then is formed? Down in the Chamber, a choice is made. (Harry's Gryffindor traits were always so much scarier than other peoples'.)
Harry Potter - Rated: T - English - Adventure - Chapters: 15 - Words: 152,578 - Reviews: 3125 - Favs: 7,881 - Follows: 9,481 - Updated: 8/19/2014 - Published: 5/26/2007 - Harry P., Ron W., Hermione G.
Terran Ingenuity by Xeno Major reviews
The Great Wars are over. Jim Raynor and his men have left the Koprulu Sector behind, choosing to settle a world away from that sector of space. Unfortunately, the colony of Shanxi is not safe; hostile aliens have invaded, intent on controlling the Terrans and their bizarre technology. Unfortunately for the Turians, the Terrans have experience fighting hostile alien invaders.
Crossover - StarCraft & Mass Effect - Rated: T - English - Chapters: 7 - Words: 90,510 - Reviews: 525 - Favs: 1,749 - Follows: 1,954 - Updated: 7/1/2014 - Published: 3/24/2013
The Sealed Kunai by Kenchi618 reviews
What if something made Naruto the dead-last that everyone sees him as? What if he really wasn't as weak as he seemed? The true Naruto, unleashed upon the shinobi world! AU Story starts at Invasion of Konoha arc and continues onwards.
Naruto - Rated: M - English - Chapters: 69 - Words: 670,128 - Reviews: 10850 - Favs: 13,025 - Follows: 8,749 - Updated: 8/20/2013 - Published: 6/14/2010 - Naruto U. - Complete
A Spark of Genius by michaelsuave reviews
Xander Harris was never called a genius, but after a different choice of Halloween costumes he is hit with a 'spark' of mad genius, the abilities that go with it, and flung into a far different world. Come and enjoy the madness. GirlGenius vers costume.
Crossover - Buffy: The Vampire Slayer & Justice League - Rated: M - English - Adventure/Humor - Chapters: 45 - Words: 532,972 - Reviews: 2821 - Favs: 2,374 - Follows: 2,059 - Updated: 5/12/2013 - Published: 10/30/2010 - Xander H.
The Wizard on the Edge of Forever by rpnielsen reviews
During the fight at the Department of Mysteries, Harry gets taken on the ride of his life.
Harry Potter - Rated: T - English - Sci-Fi - Chapters: 20 - Words: 97,800 - Reviews: 598 - Favs: 1,336 - Follows: 1,595 - Updated: 4/2/2013 - Published: 3/24/2009 - Harry P., OC
The Consequences Of Not Being Polite by The Sidhe reviews
The Colonials finally encounter their long lost relatives. However, they find out that their cousins are not quite what they had expected. Now AU due to progression in the recent season.
Battlestar Galactica: 2003 - Rated: T - English - Sci-Fi - Chapters: 47 - Words: 266,212 - Reviews: 780 - Favs: 1,142 - Follows: 877 - Updated: 12/17/2012 - Published: 10/12/2006 - Complete
Resolution by GreenGecko reviews
Sequel to Resonance and Revolution. Harry enters his second year as an Auror Apprentice. Snape's wedding looms, and Harry's odd new powers mature, creating mayhem, perilous temptations, and opportunities to gain real wisdom.
Harry Potter - Rated: T - English - Adventure/Drama - Chapters: 83 - Words: 787,823 - Reviews: 3035 - Favs: 1,517 - Follows: 1,664 - Updated: 11/13/2012 - Published: 4/1/2007 - Harry P., Severus S.
Mass Effect: Iron Rebirth by Mashadar reviews
Killed in action, Shepard is deemed lost to all save those who run Project Lazarus. But when betrayal strikes well before the Project is near completion, only one option is left to save him. An experimental brain to machine transplant. The Iron Rebirth.
Mass Effect - Rated: T - English - Sci-Fi/Drama - Chapters: 12 - Words: 140,180 - Reviews: 193 - Favs: 420 - Follows: 401 - Updated: 7/14/2012 - Published: 4/15/2010 - Shepard (M)
Harry Potter and the Sun Source by Clell65619 reviews
This is an extremely AU crossover fic that asks the question what might have happened if Petunia Dursley hadn't found a young Harry Potter sleeping on her doorstep on the morning of the 2nd of November 1981. After all, Dumbledore was a bit careless with
Harry Potter - Rated: M - English - Adventure/Humor - Chapters: 10 - Words: 111,868 - Reviews: 2323 - Favs: 7,401 - Follows: 4,635 - Updated: 5/3/2012 - Published: 9/11/2008 - Harry P. - Complete
Fate is Futile by Battle Fries reviews
The war between man and machine is turned on its head when an ex-Borg drone is thrown into the fray. This story will mostly focus on Seven of Nine, but everyone will play an important part. Minor crossover with DS9 relaunch. *NEW CHAPTER 04/23/2012*
Crossover - StarTrek: Voyager & Terminator: Sarah Connor Chronicles - Rated: T - English - Drama/Adventure - Chapters: 35 - Words: 126,562 - Reviews: 210 - Favs: 93 - Follows: 102 - Updated: 4/23/2012 - Published: 10/10/2010 - Seven of Nine
Stargate Reopened by andrewjameswilliams reviews
Joint fic with Keiran Halcyon and Wolf of Dawn. An AU reimagination of Stargate SG-1.
Stargate: SG-1 - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 8 - Words: 78,256 - Reviews: 388 - Favs: 1,032 - Follows: 995 - Updated: 2/28/2012 - Published: 11/12/2010
Stargate: New Frontier by andrewjameswilliams reviews
AU Stargate. What could have happened if the stargate had never been discovered. How would things be different for Humanity and the Goa'uld when they finally meet.
Stargate: SG-1 - Rated: K+ - English - Chapters: 13 - Words: 82,722 - Reviews: 337 - Favs: 661 - Follows: 725 - Updated: 12/14/2011 - Published: 3/1/2008
Reaper's Origin by prometheus55 reviews
After the battle with the Collectors, the Normandy tries to return to the Terminus systems. Unfortunately things don't go as planned and now the remnants of the crew must find a way home. However intentions and outcomes are rarely similar for Shepard. -ON HIATUS.
Crossover - Stargate: SG-1 & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 128,713 - Reviews: 413 - Favs: 796 - Follows: 834 - Updated: 10/23/2011 - Published: 2/19/2010 - Shepard (F)
Hunted Tribes by Hotpoint reviews
Battlestar/Battletech Crossover: The 12 Tribes of Kobol meet another tribe fleeing tyranny and genocide. Never hunt a wolverine, if you're unlucky you might catch it...
Battlestar Galactica: 2003 - Rated: T - English - Adventure - Chapters: 20 - Words: 143,268 - Reviews: 371 - Favs: 490 - Follows: 446 - Updated: 10/10/2011 - Published: 2/19/2008
The Anomaly by Miriani reviews
Anomaly -n.: something that deviates from what is normal, or expected. An anomaly in a ritual disincorporated Voldemort and left the Potter family as martyrs. Now a thousand years later, another anomaly is exposed, and Destiny refuses to be halted.
Crossover - Harry Potter & Mechwarrior/Battletech - Rated: T - English - Adventure - Chapters: 4 - Words: 14,105 - Reviews: 52 - Favs: 140 - Follows: 161 - Updated: 10/4/2011 - Published: 10/24/2010
The Best Revenge by Arsinoe de Blassenville reviews
AU. Yes, the old Snape retrieves Harry from the Dursleys formula. I just had to write one. Everything changes, because the best revenge is living well. T for Mentor Snape's occasional naughty language. Supportive Minerva. Over three million hits!
Harry Potter - Rated: T - English - Drama/Adventure - Chapters: 47 - Words: 213,669 - Reviews: 6476 - Favs: 8,482 - Follows: 4,318 - Updated: 9/10/2011 - Published: 3/9/2009 - Harry P., Severus S. - Complete
School Spirit by StoryEnvy reviews
Harry Potter wasn't surprised to learn he was a wizard. He'd been dreaming of wizards and magic for years. He was just surprised at what sort of wizard he was. Prologue is identical to "Death and Dreams". Dresden Files crossover.
Crossover - Harry Potter & Dresden Files - Rated: M - English - Fantasy/Mystery - Chapters: 9 - Words: 59,147 - Reviews: 566 - Favs: 1,819 - Follows: 2,076 - Updated: 7/19/2011 - Published: 2/2/2011 - Harry P.
The Assassins' Archives: Ginevra by J. Tyler reviews
Armed with foreknowledge and aided by a renegade cyborg, the Assassins of the Renaissance set out to fight the future. History will never be the same-literally. AU, begins mid-AC2.
Assassin's Creed - Rated: T - English - Sci-Fi/Suspense - Chapters: 76 - Words: 149,160 - Reviews: 533 - Favs: 209 - Follows: 179 - Updated: 7/10/2011 - Published: 6/23/2010
Xander Harris: The Iron Tau'ri by Gunsmith3000 reviews
YAHF Xander goes as one of his favorite marvel comic characters. However; unable to decide which side of the character he chose to go as - he gets a download of all the variants of that comic character from every available source written, and then some...
Buffy X-overs - Rated: T - English - Adventure/Humor - Chapters: 31 - Words: 128,196 - Reviews: 485 - Favs: 1,184 - Follows: 1,084 - Updated: 5/22/2011 - Published: 6/30/2008
The Consequences of Revisiting by Romantic Silence reviews
If you were given a second chance, what would you do? Harry wakes up to find that he had returned to his past. With the ability to change the outcome of future events, Harry sets out to do just that. However, with each action he takes, there is a price.
Harry Potter - Rated: T - English - Romance/Adventure - Chapters: 8 - Words: 57,473 - Reviews: 693 - Favs: 1,126 - Follows: 1,521 - Updated: 5/8/2011 - Published: 3/2/2011 - Harry P., Hermione G.
XSGCOM: Terra from the Deep by Hotpoint reviews
Crossover between SG1 and XCOM. As old enemies fall by the wayside new ones appear to challenge the Tau'ri and their allies.
Stargate: SG-1 - Rated: T - English - Adventure - Chapters: 19 - Words: 153,663 - Reviews: 399 - Favs: 650 - Follows: 569 - Updated: 5/3/2011 - Published: 1/3/2010
A World of Difference by Shadow Master reviews
DBZBtVS crossover You ever go through life thinking you know exactly who you are and what you are? Have you ever had the truth kept from you by higher beings? For one Xander Harris the answers to these questions will be a big and loud YES.
Buffy: The Vampire Slayer - Rated: M - English - Adventure/Sci-Fi - Chapters: 19 - Words: 212,624 - Reviews: 205 - Favs: 357 - Follows: 264 - Updated: 4/26/2011 - Published: 6/28/2006 - Xander H. - Complete
Anne Boleyn, the Witch Queen by cruelangel101 reviews
Henry VIII had once said Anne Boleyn seduced him with witchcraft in order to get out of his marriage. What if Anne Boleyn was indeed a witch? What if a seer's vision informed Anne of her fate early? Detailed summary inside...
Crossover - Harry Potter & Tudors - Rated: T - English - Chapters: 14 - Words: 127,978 - Reviews: 287 - Favs: 299 - Follows: 144 - Updated: 2/18/2011 - Published: 6/8/2010 - Anne Boleyn - Complete
Harry Potter and the Assassin's Creed by Grinning Lizard reviews
An object in the Dept of Mysteries sends Harry 800 years into the past... an adventure of Crusaders, Assassins, Warlocks and Conspiracy, because there's more to saving the world than killing a Dark Lord. HPxAC TimeTravel. Violent.
Crossover - Harry Potter & Assassin's Creed - Rated: M - English - Adventure/Drama - Chapters: 4 - Words: 49,105 - Reviews: 204 - Favs: 731 - Follows: 906 - Updated: 1/27/2011 - Published: 11/18/2010 - Harry P.
Worthless by GandalfTG reviews
Xander gets kicked out of the house at 16 and finds a new toy that changes the lives of everyone on the planet. Under Revision...
Buffy: The Vampire Slayer - Rated: T - English - Romance/Sci-Fi - Chapters: 10 - Words: 78,616 - Reviews: 114 - Favs: 269 - Follows: 285 - Updated: 12/25/2010 - Published: 12/27/2004 - Xander H., Dawn S., Willow R.
A Clock on the Face of Hell by IdSayWhyNot reviews
Fate was sealed that night. I was to live and fight, to breathe and conquer. The night I died and lived England celebrated the end of the nightmare that had yet to begin and praised the baby they would later fear and hate. I am Harry Potter. I am legend.
Harry Potter - Rated: T - English - Adventure - Chapters: 6 - Words: 52,514 - Reviews: 304 - Favs: 917 - Follows: 989 - Updated: 9/20/2010 - Published: 6/25/2010 - Harry P., F. Flitwick
Escape to Darkness by kmfrank reviews
After Voldemort's resurrection, Harry awakens to a cold stone floor. After years of toiling with a "reformed" dark wizard willing to aid his revenge, Harry escapes from Nurmengard and finds that the Wizarding world has changed...
Harry Potter - Rated: M - English - Adventure/Drama - Chapters: 6 - Words: 49,065 - Reviews: 441 - Favs: 1,528 - Follows: 1,914 - Updated: 9/9/2010 - Published: 1/24/2009 - Harry P., Gellert G.
Magical Mars by Meandering Fox reviews
Crossover with The Mars Trilogy by Kim Stanley Robinson. Harry and Hermione leave everyone and everything they know behind and embark on the greatest adventure in history: the colonization of Mars.
Crossover - Mars Trilogy & Harry Potter - Rated: T - English - Sci-Fi/Adventure - Chapters: 9 - Words: 30,452 - Reviews: 94 - Favs: 104 - Follows: 152 - Updated: 7/24/2010 - Published: 1/29/2009 - Harry P.
The Blood of the Gods by The Mysterious Nobody reviews
Blood, corruption, betrayal and horror remain hidden behind the thin veil of lies of the Masquerade. The Blood of the Gods, conducted by the Wings of Hermes will unlock the secrets of life itself. A Tale of horror Wizards and Vampires. Crossover, AU.
Harry Potter - Rated: M - English - Adventure/Supernatural - Chapters: 3 - Words: 15,910 - Reviews: 17 - Favs: 40 - Follows: 64 - Updated: 5/22/2010 - Published: 3/25/2008 - Harry P.
The Terran Ascension by JewelsGlow15 reviews
HPxSG1 When Harry finds the Chamber of Merlin within the halls of Hogwarts the future of Earth will never be the same. And neither will the characters.
Harry Potter - Rated: M - English - Sci-Fi/Adventure - Chapters: 26 - Words: 152,039 - Reviews: 1099 - Favs: 2,236 - Follows: 2,642 - Updated: 4/25/2010 - Published: 3/2/2007
Stargate: Thirdspace by andrewjameswilliams reviews
In the 26th century a group of Tau'ri warships is sent to a newly discovered galaxy, triggering a war that could see the extinction of all life in the universe. B5/Stargate Crossover.
TV X-overs - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 24 - Words: 118,416 - Reviews: 612 - Favs: 654 - Follows: 651 - Updated: 1/27/2010 - Published: 5/14/2006
Demon's Feign, Merlin's Pain by nuhuh reviews
HPDresdenFiles. Unknown to Potter there is a trail of blood to reach him in a world far from his own. And a wizard there,Dresden, who is trying to stop the green eyed demon with the lightning scar from entering his world,though he doesn't know that he is.
Harry Potter - Rated: M - English - Supernatural/Adventure - Chapters: 19 - Words: 166,190 - Reviews: 739 - Favs: 1,686 - Follows: 1,010 - Updated: 1/6/2010 - Published: 3/31/2007 - Complete
XSGCOM: Mirror Image by Hotpoint reviews
Crossover between SG1 and XCOM. As Earth fights against two separate extraterrestrial threats the defenders join forces and the tables are turned.
Crossover - Stargate: SG-1 & X-Com - Rated: T - English - Adventure - Chapters: 52 - Words: 349,026 - Reviews: 772 - Favs: 924 - Follows: 501 - Updated: 12/30/2009 - Published: 7/2/2007 - Complete
Over the Rainbow by neoolong reviews
Xander is pulled into the future post-Judgment Day. Fighting the future in the past, he’ll try to prepare the world as best he can. And hope that maybe he can stop it from happening at all.
Crossover - Buffy: The Vampire Slayer & Terminator: Sarah Connor Chronicles - Rated: T - English - Adventure/Sci-Fi - Chapters: 6 - Words: 61,800 - Reviews: 48 - Favs: 75 - Follows: 93 - Updated: 9/13/2009 - Published: 4/17/2009 - Xander H.
Meaning It by Itzika reviews
After Sirius' death, Harry begins a study of ancient magics that takes him to the edge of sanity--and humanity. When he's pulled back at the last minute by some of the most unlikely people imaginable, he's a different person. Dark!Harry, Powerful!Harry
Harry Potter - Rated: T - English - Fantasy/Angst - Chapters: 14 - Words: 49,824 - Reviews: 568 - Favs: 903 - Follows: 1,257 - Updated: 9/12/2009 - Published: 8/15/2007 - Bellatrix L., Harry P.
The Lie I've Lived by jbern reviews
Not all of James died that night. Not all of Harry lived. The Triwizard Tournament as it should have been and a hero discovering who he really wants to be.
Harry Potter - Rated: M - English - Adventure/Romance - Chapters: 24 - Words: 234,571 - Reviews: 4588 - Favs: 10,878 - Follows: 4,943 - Updated: 5/28/2009 - Published: 2/9/2007 - Harry P., Fleur D. - Complete
Altered Destiny: Divergence Point by andrewjameswilliams reviews
Stargate SG-1, Stargate Atlantis xover. AU. When Anubis makes a different decision during his attack on Earth in Lost City a chain of events is unleashed that will change the universe forever.
TV X-overs - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 5 - Words: 62,710 - Reviews: 92 - Favs: 289 - Follows: 201 - Updated: 2/25/2009 - Published: 2/15/2009 - Complete
Culture Shock by Ruskbyte reviews
Harry Potter has just received his Hogwarts letter, but really doesn’t want to go. After all, who would want to live on a planet? Especially one where the natives think nuclear energy is high science. And let’s not forget the 42,000 lightyear commute.
Harry Potter - Rated: M - English - Chapters: 7 - Words: 72,186 - Reviews: 1364 - Favs: 3,117 - Follows: 3,396 - Updated: 9/30/2008 - Published: 1/1/2008 - Harry P.
Star Trek: Dagger by MorbiusXX reviews
This is a story of the Romulan war based on the Star Fleet museum website. You can view the types of spaceships on that site. I've used characters from Enterprise but the story departs that storyline.
StarTrek: Other - Rated: M - English - Adventure/Sci-Fi - Chapters: 53 - Words: 979,209 - Reviews: 22 - Favs: 38 - Follows: 19 - Updated: 9/16/2008 - Published: 12/17/2006 - Complete
Harry Potter, the ArchMagus by the DragonBard reviews
AU. After an incident with Dudley and his gang, Harry discovers his magical abilities. However, there is no one to teach him how to wield his magic. So, with only fantasy books to guide him, Harry must forge himself into the wizard he is meant to be.
Harry Potter - Rated: T - English - Fantasy - Chapters: 7 - Words: 38,443 - Reviews: 1701 - Favs: 3,635 - Follows: 4,356 - Updated: 9/13/2008 - Published: 11/7/2005 - Harry P.
To The Journey by Kikaider01 reviews
Star Trek crossover with nBSG. This is AU and takes place after the Voyager episode Pathfinder and during the nBSG episode Crossroads Part II. Voyager and the RTF are going to have to join forces if they're going to make it to Earth.
TV X-overs - Rated: T - English - Sci-Fi/Adventure - Chapters: 11 - Words: 59,393 - Reviews: 152 - Favs: 211 - Follows: 320 - Updated: 8/27/2008 - Published: 8/2/2007
Harry Potter and the Alchemist's Apprentice by kmfrank reviews
In the midst of the battle in the Department of Mysteries in Harry's fifth year, he is knocked into a large hourglass and hit with five Killing Curses from the Death Eaters. He wakes up in the streets of an unfamiliar London. Where is he? What happened
Harry Potter - Rated: T - English - Adventure/Drama - Chapters: 4 - Words: 44,040 - Reviews: 291 - Favs: 780 - Follows: 1,003 - Updated: 7/21/2008 - Published: 5/28/2008 - Harry P.
Death, In Glory by Apocalypso-33 reviews
Crossover with 300: The Movie. AU Time is a fragile dimension, and mixing magic with it has severe repercussions more often than not. What does the future hold for Harry, raised in ancient Sparta, then thrust back into the Future? Eventual Honks
Harry Potter - Rated: M - English - Adventure/Romance - Chapters: 3 - Words: 25,073 - Reviews: 492 - Favs: 974 - Follows: 1,277 - Updated: 1/14/2008 - Published: 8/1/2007 - Harry P., N. Tonks
Rise of the Tau'ri by cast2007 reviews
Post Season Ten. The Ori have arrived to the Milky Way galaxy. The Stargate program has been revealed to the public and Earth has been attacked. Let loose the dogs of war.
Stargate: SG-1 - Rated: M - English - Adventure/Sci-Fi - Chapters: 15 - Words: 88,704 - Reviews: 165 - Favs: 232 - Follows: 243 - Updated: 1/10/2008 - Published: 4/10/2006
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Star Wars: The Force Wills reviews
When we think of the recent history of the galaxy, we think of names like Palpatine, Dooku, Yoda, Skywalker - they stood like titans over the events that unfolded. I also played my part doing the best I could. Can't say if it was for the better or the worse - only time will tell I suppose as the Force wills. [SI/AU]
Star Wars: The Clone Wars - Rated: M - English - Sci-Fi/Fantasy - Chapters: 4 - Words: 24,803 - Reviews: 45 - Favs: 160 - Follows: 178 - Updated: 12/7/2017 - Published: 11/23/2017 - Ahsoka T.
First Witch reviews
The world is dying. No one wants to admit it. Taylor awakens and opens her Eyes; meaningless death, conflict, war, but it all pales in the face of extinction. One neophyte parahuman may be all that stands in its way. (Alt!Taylor, AU)
Worm - Rated: M - English - Sci-Fi/Fantasy - Chapters: 5 - Words: 29,406 - Reviews: 112 - Favs: 621 - Follows: 689 - Updated: 2/22/2015 - Published: 1/11/2015
A Stranger on the Frontier reviews
Keiran Swan was going to die, but rescued from death's clutches by our favorite single letter ROB. Now in another universe, burdened with the knowledge of what's to come, he must walk a tight rope of temptation - and truly face the dilemma of a certain famous Vulcan proverb. (SI)
StarTrek: Deep Space Nine - Rated: M - English - Sci-Fi/Adventure - Chapters: 12 - Words: 55,344 - Reviews: 204 - Favs: 348 - Follows: 314 - Updated: 10/21/2014 - Published: 3/25/2013 - Jadzia D., B. Sisko
Exodus of Stars reviews
Aleksandr Kerensky has led the war weary Star League Defense Force on a two year long journey into exile. A chance decision leads to a long awaited discovery, and final proof that humanity is not alone in the cosmos.
Crossover - Mechwarrior/Battletech & Mass Effect - Rated: M - English - Adventure/Sci-Fi - Chapters: 12 - Words: 73,164 - Reviews: 250 - Favs: 736 - Follows: 705 - Updated: 12/5/2012 - Published: 7/4/2011
Manhattan X reviews
YAHF - Xander decides to embrace 'come as you aren't' on Halloween a little too much. As a result he now has the fate of the planet and the Human Race in his hands.
Crossover - Buffy: The Vampire Slayer & Stargate: SG-1 - Rated: M - English - Sci-Fi/Fantasy - Chapters: 4 - Words: 46,776 - Reviews: 190 - Favs: 1,034 - Follows: 1,168 - Updated: 11/17/2011 - Published: 3/23/2010 - Xander H.
Huntress reviews
What is beyond the veil of this world? One young woman discovers that death is but the beginning of her journey. Her struggle to find meaning and purpose in an unexpected afterlife will shake the very foundations of Soul Society.
Bleach - Rated: M - English - Adventure/Supernatural - Chapters: 5 - Words: 31,924 - Reviews: 27 - Favs: 69 - Follows: 66 - Updated: 3/10/2011 - Published: 2/1/2011
The Lotus' Blossom reviews
The Avatar has returned. Aang emerges into war-torn world to find his people gone. Now he must master the elements and restore balance with help from his friends and allies, some of whom appear from the most unlikely places.
Avatar: Last Airbender - Rated: M - English - Adventure/Mystery - Chapters: 2 - Words: 14,066 - Reviews: 13 - Favs: 33 - Follows: 26 - Updated: 1/2/2011 - Published: 12/31/2010 - Aang, Katara
Star Trek: Divergence reviews
In the 22nd Century, after a year of exploration in deep space Enterprise is damaged, near adrift. Their distress call is answered by those who would bring about a new era for Earth and the Galaxy.
Crossover - Stargate: SG-1 & StarTrek: Enterprise - Rated: M - English - Sci-Fi/Adventure - Chapters: 7 - Words: 69,764 - Reviews: 216 - Favs: 710 - Follows: 763 - Updated: 12/29/2010 - Published: 10/18/2009 - S. Carter
The Dawn of Angels reviews
Humanity finds itself in a wondrous and dangerous new Universe. They have been given the chance for a fresh start and begin the difficult journey to shoulder the Legacy of both the Asgard and the Alterans.
Crossover - Stargate: SG-1 & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 5 - Words: 23,769 - Reviews: 317 - Favs: 873 - Follows: 916 - Updated: 8/2/2010 - Published: 4/17/2010 - Shepard (F)
Stargate: Commonality reviews
Something has changed in our distant past. We are totally different. We have created a near Utopia. We have already begun the exploration of space. What we found in the final frontier was not what we hoped for. Our dreams of a peaceful Universe shattered.
Stargate: SG-1 - Rated: M - English - Sci-Fi/Adventure - Chapters: 4 - Words: 33,622 - Reviews: 263 - Favs: 532 - Follows: 536 - Updated: 9/6/2009 - Published: 2/21/2009
Xata reviews
YAHF Xander dresses as our favorite Professor of Humanity. The consequences are like knocking over the single pebble that starts the avalanche of change not only for the Scoobies, but for the world.
Buffy X-overs - Rated: M - English - Sci-Fi/Supernatural - Chapters: 14 - Words: 137,880 - Reviews: 344 - Favs: 688 - Follows: 775 - Updated: 6/13/2009 - Published: 6/21/2007