17 The Master of Death » by Sawtooth72 Harry Potter has graduated from Hogwarts. After finishing his training to be a Auror, he gets a troubling dream, with forbidding of the things to come. With in days his world is flipped up-side down. Will Harry be able to go on and live a new life, or is his life at an end? Discontinued
K, English, Adventure, chapters: 7, words: 6k+, favs: 63, follows: 84, updated: 9/5/2020 published: 11/15/2018, Harry P., Master Chief/John-117, Cortana
232 Azuveya: Fury Oh Fury » by Kira Kyuu Aloe Potter (fem!HP) wasn't sure how she got here - 'here' being in what seemed to be a young girl's body, four-hundred-and-some-odd years into the future, and at risk of being killed by an alien empire, but it seemed like something her luck would come up with.
T, English, chapters: 18, words: 26k+, favs: 746, follows: 1k+, updated: 12/18/2019 published: 8/24/2014, Harry P.
32 Roar of Thunder » by Quill and Brush When Harry doesn't make it to Hogwarts for their third year, Hermione's life gets weird, but not nearly as weird as Harry's is. Or, Harry becomes a Spartan and comes back to kick Death Eater ass. Rated T for infrequent moderate language and non-graphic violence. And Death Eater ass.
T, English, Adventure & Sci-Fi, chapters: 2, words: 6k+, favs: 226, follows: 359, updated: 3/12/2018 published: 8/25/2016, Harry P., Hermione G., Luna L., Neville L.
6 Spiriav ro Deaavh by Tyler Nox The Covenant called the Spartans, Demons. An insult, but one attached with a modicum of respect. They called him Spiriav ro Deaavh, a name taken from their ancient scriptures meaning Angel of Death.
T, English, Adventure & Mystery, words: 1k+, favs: 67, follows: 81, 10/6/2017, Harry P., Hermione G.
8 Section M by Tyler Nox Dr. Halsey did not like to lose. She had raised her Spartans to be the best in preparation for a war against humans, not aliens. The aliens were an unexpected variable and it was destroying all that she had done. It was strange to worry over the Spartans, but she wouldn't, couldn't let them just die. She had found her next problem. ONESHOT.
T, English, words: 3k+, favs: 47, follows: 46, 8/10/2017, Harry P., Neville L., C. Halsey, SPARTAN-B312/Noble Six
35 The Wizard from Tribute » by PhillyCh3zSt3ak The year is 2552 and humanity has just escaped genocide from the Covenant thanks to the Great Schism. Harry's family is killed by Brutes and is sent to an orphanage after being rescued by an unlikely ally. He is later adopted by a certain ODST. What will happen when the worlds of magic and advanced technology meet? Rated T for safety.
T, English, Sci-Fi, chapters: 3, words: 8k+, favs: 112, follows: 146, updated: 6/25/2016 published: 11/25/2015, Harry P., Rookie
8 A Halo's Sorting » by Harvester of Dreams The Master Chief wakes up in 1991 with Cortana, Johnson, and the Arbiter. The catch? They're all eleven and off to Hogwarts. What could possibly go wrong? Rated T for language and violence.
T, English, Adventure & Humor, chapters: 2, words: 5k+, favs: 54, follows: 40, updated: 4/12/2016 published: 2/6/2016, Master Chief/John-117, A. J. Johnson, Arbiter, Cortana
64 Son of the Sangheili » by The Order of the White Knights Harry Potter was whisked away by magic to Sanghelios, homeworld of the Sangheili elites . Seeing the abuse upon him, the Sangheili adopted him as their own and trained him. Now he returns on a mission from the Prophets: to subjugate wizards and witches.
T, English, Sci-Fi & Family, chapters: 2, words: 2k+, favs: 170, follows: 192, updated: 1/17/2015 published: 6/16/2010, Harry P.
28 Harry Potter and the Ancient Human empire » by Neo-Devil Harry isn't just mean't to defeat Voldemort, a Month Before the Second book, He Comes across Dudley watching Halo 4 Terminals, and he feels a familier chill to it, It is Time for the Return of The Lord of Admirals.
T, English, Fantasy & Sci-Fi, chapters: 3, words: 1k+, favs: 96, follows: 121, updated: 12/31/2014 published: 9/9/2014
22 149 » by xfoxgamerx When offered a new life by Doctor Halsey, a six year old Harry Potter says yes. This is the life of SPARTAN-149.
T, English, Sci-Fi & Adventure, chapters: 7, words: 4k+, favs: 154, follows: 193, updated: 12/7/2014 published: 8/21/2013, Harry P., Hermione G., Master Chief/John-117
15 Raized by the Fallen » by I'mThe12thDocotor Harry is found alone in Germany, a Group of the Covenant are througn throught the void. How will the HP world survive with a Coventant Harry or will they at all? Sorry I am abandoning this story RL hit me real hard over the last year, but should I remove the story? If not take it as a challenge prompt or something, I shure one of you are a much better writer then I am.
T, English, Sci-Fi & Fantasy, chapters: 2, words: 1k+, favs: 44, follows: 56, updated: 8/20/2013 published: 3/3/2013, Harry P.
1 Ultimatum-Part 3 (2) by GradualHail6758 This is what happens when the Spartans we ended with in Ghosts of Onyx find themselves in separate worlds where magic is real, technology is slow, heroes exist, and the missing could be closer than you think. Based off the characters from the books, games, cartoons, comics, tv series and movies that make up this web of worlds. **Re-vamp of previous 1st chapter.**
T, English, Adventure, words: 1k+, favs: 4, follows: 8, 5/23/2013
257 Master Chief and the Order of the Phoenix » by LordCaldrin45 It's been four years since Master Chief escaped the explosion of Halo. The wreckage of the Forward Unto Dawn went through a black hole, teleporting Master Chief and Cortana to back to 1995 Earth and crash land in England, where Harry Potter is taking his fifth year. A new adventure is about to begin. Review!
T, English, chapters: 10, words: 19k+, favs: 332, follows: 414, updated: 5/7/2013 published: 7/16/2012, Harry P., Master Chief/John-117
408 My Emerald Child » by darkangelwp HaloXHarry Potter crossover! Five year old Harry Potter wishes for a family. Well, he got one. Say hello to, Arcana, child of the Sangeili! BEING REWRITTEN!
T, English, Adventure, chapters: 11, words: 24k+, favs: 804, follows: 942, updated: 4/29/2013 published: 7/5/2007, Harry P., Master Chief/John-117
348 Soldier » by LilaKatze Harry was born to be a fighter-it was his destiny. But destiny never said what time period he had to become one. Harry Potter X Halo.
T, English, Sci-Fi & Adventure, chapters: 7, words: 30k+, favs: 1k+, follows: 1k+, updated: 1/4/2013 published: 1/3/2010, Harry P., Master Chief/John-117
86 Red vs Blue and the Order of the Phoenix » by Until We Have Faces "Wha—?" Church looked up and saw a huge train with the words 'Hogwarts Express' written on the side. He shook off Caboose's arm and stood staring at the train."Caboose," He spoke slowly, "What in the hell did you do?" MAJOR HIATUS
T, English, Humor & Adventure, chapters: 6, words: 8k+, favs: 106, follows: 120, updated: 2/4/2012 published: 8/18/2011
7 A Troublesome Mistake by FireBlayze What would it be like if Caboose had accidentally found himself in the world of Harry Potter and found himself becoming best friends with Hermione Granger?
T, English, Adventure & Humor, words: 782, favs: 12, follows: 15, 9/27/2011, Hermione G.
9 Harry Potter and the Pillar of Autumn » by Some Moron Suppose the world-famous sci-fi shooter, Halo: Combat Evolved, were designed to play like EA Games' PC rendition of Harry Potter and the Prisoner of Azkaban. The adventure would unfold something like this.
K+, English, Humor & Parody, chapters: 2, words: 6k+, favs: 10, follows: 5, updated: 12/28/2010 published: 9/13/2010
36 The Frozen Soldier » by KitsuneTenshi124 in our time britian froze. in the chief's time only one lives in britian. and he is not happy that he's been woke up.
T, English, chapters: 5, words: 3k+, favs: 159, follows: 203, updated: 12/7/2010 published: 5/24/2010, Harry P., Master Chief/John-117
4 Hero With a Serial Number » by RagingCacti Chaos. Both muggle and wizard worlds are under attack. Voldemort has taken over the ministry, and Harry's days are numbered. Horcruxes are gone. When hope has failed, a protector comes to Hogwarts.
T, English, Adventure & Angst, chapters: 2, words: 660, favs: 10, follows: 16, updated: 2/15/2010 published: 9/5/2007, Harry P.
13 Path of Return by gamesguyman Cheif returns to Earth only to find that he has come back in time. Rated T for violence.
T, English, Adventure & Sci-Fi, words: 636, favs: 28, follows: 40, 1/24/2010, Harry P., Master Chief/John-117
71 Defence Against the Blue Arts by Compass West Harry has a new Defence Against the Dark Arts teacher. He's big, has a southern accent and wears red armour. NOT A HALO CROSSOVER. THIS IS A RED VS BLUE CROSSOVER. Contains insubordination, shotgun blasts and some Draco and Ron whumping.
K+, English, Humor & Horror, words: 3k+, favs: 160, follows: 78, 7/22/2009, Draco M.