Code Geass and Gundam 00 Crossovers
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One and only Son by Juubi-K reviews
Written for Zaru. Bismarck Waldstein regrets only one thing; that he has no son. When he claims an orphan boy for his own, the course of history takes an unexpected turn.
Rated: M - English - Chapters: 26 - Words: 229,629 - Reviews: 605 - Favs: 821 - Follows: 845 - Updated: 3/30 - Published: 9/9/2009 - Cornelia L.B., Setsuna
Code Gundam: Meister of the Rebellion by IS6A6E reviews
Prince. Student. Terrorist. Hero. Villain. Savior. Demon. Zero. Lelouch has held these titles and many more. But to rid the world of the disease known as war, Lelouch must evolve into something greater than what he once was and become the embodiment of the eradication of war. He is... Gundam!
Rated: T - English - Adventure/Sci-Fi - Chapters: 10 - Words: 135,987 - Reviews: 121 - Favs: 183 - Follows: 148 - Updated: 6/22/2021 - Published: 1/12/2021 - Lelouch L., Suzaku K., Kallen S., Ribbons - Complete
Regalis Libera Virtu by KisaragiKei reviews
"Big Brother, fighting Britannia... vengeance won't give me my legs again, it won't give us mother back!" The small change of Nunnally overhearing Lelouch's vow to Suzaku created a rippling effect that laid the bricks of a new path. A path which Zero never came into being. Only Lord Julius Kingsley, A different sort of man. No Contract. Multi-Gundam-lite Crossover
Rated: M - English - Sci-Fi - Chapters: 11 - Words: 77,730 - Reviews: 79 - Favs: 285 - Follows: 335 - Updated: 1/6/2021 - Published: 2/16/2018 - Lelouch L., Jeremiah G., Dimensional Supervisor
Code 00: The Colorful Future by Nanashi Otosaka reviews
A drifting soul from our world collides with the world of Code Geass. With knowledge in one hand and a purpose in another, how will he change the colors of the future? (Self Insert/SI). Rating may change
Rated: T - English - Chapters: 4 - Words: 8,648 - Reviews: 23 - Favs: 120 - Follows: 155 - Updated: 5/11/2019 - Published: 6/15/2018 - Lelouch L., Nunnally L., OC
Code Geass Lelouch of the Reformation by sephiroth12285 reviews
Near the end of the year 2307 a new organization has arisen to challenge the current world seeking to end conflict through interventions using powerful weapons, but before their arrival in the grand scheme of things a high school boy sought to change the world his own way and would be joined by one who shares similar views, but can they truly change the world against such odds?
Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 5,345 - Reviews: 17 - Favs: 92 - Follows: 81 - Published: 7/21/2018 - [Lelouch L., Liu Mei]
Peace that Transcends all (Rewrite) by Shadow.00.Exia reviews
Trapped in world plagued by the same worries his earth has Setsuna along with Lelouch will strike out and bring reformation the world.
Rated: M - English - Adventure - Chapters: 1 - Words: 2,881 - Reviews: 4 - Favs: 12 - Follows: 17 - Published: 4/12/2016
Code Gundam Musou by Ali al-Saachez reviews
After the ordeals of Gundam Musou 3 where heroes from different worlds fought and eventually united against Knight Gundam in what turned out to be a test for humanity. He sends them to the world of Code Geass where they will confront the Britannian Empire and bring about justice and peace. However, the Britannian Empire is not the true threat that awaits...
Rated: T - English - Sci-Fi/Adventure - Chapters: 13 - Words: 66,461 - Reviews: 97 - Favs: 138 - Follows: 128 - Updated: 11/27/2015 - Published: 6/16/2014
Peace that trenscends all by Shadow.00.Exia reviews
What if that Feldt had secret feelings for Setsuna and only had a sisterly affection with Lockon, and what do you get when you team up a boy who wants the downfall of his old country and another boy willing to help him if he promises that it is for peace. You get britannians getting their collective asses handed to them.
Rated: M - English - Romance/Adventure - Chapters: 5 - Words: 18,211 - Reviews: 24 - Favs: 45 - Follows: 63 - Updated: 4/14/2015 - Published: 10/8/2012 - Kallen S., Setsuna
Code Geass: Rebirth Begins Through Destruction by BahamutX978 reviews
Code Geass/Gundam 00. Young Prince Lelouch vi Britannia's life was peaceful, but that changed when a terrorist attack claimed the life of his mother. 7 years later, he is part of Celetial Being, an organization who's goal is the elimination of war.
Rated: T - English - Adventure/Sci-Fi - Chapters: 7 - Words: 30,265 - Reviews: 60 - Favs: 87 - Follows: 93 - Updated: 8/18/2014 - Published: 3/26/2009 - Lelouch L.
Quantum Shift by Manic 101 reviews
The Dialogues-to-Come have failed, and war has come to Earth. But Veda has presented a back-up plan: Time Travel. How will a new generation of Celestial Being fare in a war against Britannia, China and the EU? Will they unite the world and prepare them for the Dialogues, or will they ultimately fail like their predecessors?
Rated: T - English - Sci-Fi/Adventure - Chapters: 5 - Words: 37,801 - Reviews: 40 - Favs: 111 - Follows: 134 - Updated: 8/8/2014 - Published: 2/28/2014 - Lelouch L., Nunnally L., Lyle, Setsuna
Omega and Alpha by jetslinger333 reviews
Lelouch and Nunnally never encounter someone or something to aid them even when they were powerful machine with alien technology and A.I. at their disposal thus Lelouch and Nunnally Called themselves the Celestial Knight to destroy Britannia.
Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 5,532 - Reviews: 5 - Favs: 35 - Follows: 29 - Published: 3/26/2014
Gadessa Heights by Keita78 reviews
This is a crossover story involving characters from Gundam 00, Code Geass & Gundam Seed Destiny. The story takes place at an undetermined location on Earth in an apartment building where all the characters live together. It's supposed to be absolutely ridiculous. It is slash fiction some straight, some yaoi but nothing explicit.
Rated: K+ - English - Humor - Chapters: 3 - Words: 24,912 - Reviews: 2 - Favs: 1 - Follows: 2 - Updated: 9/5/2013 - Published: 8/10/2013 - Lelouch L., Tieria, Rolo L., Suzaku K.
Lost Words by SaraJane024 reviews
"What is it about this one person that makes me feel this way?" What if Setsuna woke up in the Code Geass world after his fight with Graham at the end of season 1? What if our lovely Lelouch found him and took him home? Setsuna x Lelouch
Rated: T - English - Romance/Drama - Chapters: 2 - Words: 1,178 - Reviews: 17 - Favs: 8 - Follows: 22 - Updated: 12/21/2012 - Published: 7/9/2011 - Lelouch L., Setsuna
Celestial Knights of the Ptolemaios 00 by Bolmung LK reviews
FF#6 The Gundam Meisters are saved by a mysterious beam of light and they find an abandoned Celestial Being base on the surface of Mars that has a lot of hidden secrets about Veda and Aeolia. Full summary inside, I wish FFnet would give us more room.
Rated: M - English - Mystery/Adventure - Chapters: 3 - Words: 31,279 - Reviews: 8 - Favs: 27 - Follows: 32 - Updated: 7/29/2011 - Published: 7/20/2011 - Lelouch L., Tieria
GundamCode 00: The Second Advent by Wyuhin 5000 reviews
Season 2 is here at last. Memento Mori is all set and ready to fire...
Rated: T - English - Adventure/Sci-Fi - Chapters: 14 - Words: 48,390 - Reviews: 10 - Favs: 28 - Follows: 24 - Updated: 2/11/2011 - Published: 2/1/2010 - Lelouch L.
Code 00The Prelude by Wyuhin 5000 reviews
When Charles and Marianne died during the Imperium invasion of Japan, Lelouch was left alone. However, he is soon entered into another world instead...
Rated: T - English - Sci-Fi - Chapters: 6 - Words: 9,596 - Reviews: 3 - Favs: 13 - Follows: 16 - Updated: 1/25/2011 - Published: 8/22/2009 - Lelouch L., Ruido
The New Miester by VampirePrincessSemira reviews
Celestial Being and the black knights make an alliance to bring back the freedom of Japan. Kallen ends up saving one of the Gundam Miesters and once they know who she is, they plan on making her a gundam Miester in the joined alliance,will she accept.
Rated: K+ - English - Humor/Sci-Fi - Chapters: 8 - Words: 9,753 - Reviews: 3 - Favs: 5 - Follows: 6 - Updated: 3/17/2010 - Published: 12/20/2009 - Kallen S.
GundamCode 00 by Wyuhin 5000 reviews
A crossover between Code Geass and Gundam 00, thus having characters from both. Last chapter and epilogue up. Don't miss the next season coming soon.
Rated: T - English - Sci-Fi - Chapters: 28 - Words: 149,428 - Reviews: 28 - Favs: 86 - Follows: 49 - Updated: 1/10/2010 - Published: 5/26/2009 - Lelouch L. - Complete