These are recommendations made by Tropers for Code Geass Crossover fics, all of which have to be signed to stay on the page. Feel free to add a fanfic of your own finding to the list, but remember to use the template found here.
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The Chess Match
by anja-chan
- Recommended by: Lekonar, Candelabra
- Crossover with: Death Note
- Status: Dead; last updated March 2018
- Synopsis: After the Britannian Empire invades Japan in search of Kira, Light finds himself in the perfect position to find the true names of the Nobility: Ashford Academy. Enter Lelouch, a chessboard, and a clash of philosophy...
1 ReviewCode Geass 50K: Lelouch of the Imperium by Soraga
- Recommended by: R.G.
- Crossover with: Warhammer 40,000
- Status: Ongoing (Received an update on Oct 4, 2021)
- Synopsis: In the fifty-first millenium, the Imperium of Man is in the final stages of collapse. As the forces of Abaddon the Despoiler close in on Terra, humanity's final stronghold, their only hope is the Emperor's forgotten solders: the Black Knights.
Code Magi Lyrical Rider by Harouki
- Recommended by: BetaHalo
- Crossover with: Kamen Rider, Puella Magi Madoka Magica and Lyrical Nanoha
- Status: Complete
- Synopsis: After denying the "world without lies," Lelouch, Suzaku and C.C. attempt to leave the World of C, but the world has other plans for them.
- Notes: Has a sequel, Code Magi Lyrical Rider: StrikerS, as well as a collection of side stories, Code Magi Lyrical Rider: Side StorieS.
- Comments: Truly a good end for these three stories with bittersweet endings, the pairings are kinda odd, but they work awesomely well, the Kamen Rider Factor will get laughs from you, the combat scenes are well written and the characterizations are incredible, its sequel its out and tons of stuff hit the fan.
The Element of Freedom by ZGW
- Recommended by: Anarchist225
- Crossover with: The Legend of Korra
- Status: Dead; last updated June 2014
- Synopsis: He was a non-bender granted a extraordinary gift, control of an element nearly gone from this world and a power all but unknown to it. He will set fire to the unjust world and destroy it's already decaying balance and replace it with is own! For he is Zero! The man that will drag the world into the future and change it forever! Even if his sister, the Avatar, tries to stop him.
Eternal Geass Moon: The Garden of Sinners by AlfheimWanderer
- Recommended by: Steve the Corn Muffin, Rivenscryr, Dame-Amaryllis
- Crossover with: The Garden of Sinners
- Status: Dead; last updated May 2018
- Synopsis: What if magic was more prevalent in the world of Code Geass than met the eye? And what if the Geass Wars were just a cover for something greater? For do witches and warlocks with mysterious pasts not exist in this world, wielding powers beyond human?
- Notes: Characters from Tsukihime, Melty Blood, and Fate/stay night also appear in the story and have roles that affect the plot in some shape or form.
Fairy Without Wings by draconichero21
- Recommended by: Epic Ebi
- Crossover with: Fairy Tail
- Status: Dead; last updated November 2019
- Synopsis: Kallen Kozuki is a 17 year old mage. She's been kicked out of two guilds and seen the fall of a third. She's come to Fiore's town of Loreon to meet a mage consultant that might help her with her inability to control her power, which leads her to have the opportunity to join the mage guild Knightmare Frame.
- Comments: Fans of Soul Chess who are familiar with Fairy Tail should be - if they aren't already - all over this story. The author himself has stated that he is much happier with this story than the majority of Soul Chess. And it really shows. His characters are near-flawless, the fights have almost drastically improved, the plot feels a lot more well thought-out... If you're looking for a new long-running series under draconichero's name, this is the best choice.
FateGeass: The Eden Vital War by AlfheimWanderer
- Recommended by: Rivenscryr, Steve the Corn Muffin
- Crossover with: Fate/stay night
- Status: Complete
- Synopsis: This fic tells the story of the most recent Eden Vital War, a ritual established to minimize damage in resolving disputes between Code-bearers with different visions for the future of the World of C, since the last dispute resulted in a world-spanning war that destroyed Atlantis and nearly caused The End of the World as We Know It. But, as the cast of Code Geass isn't exactly known for following rules, V.V. decides to stack the deck by sealing away C.C. before the War in order to prevent her from stopping Ragnarok. C.C. does not take kindly to this, and upon her release during the Shinjuku Incident, appoints Lelouch as the 8th champion of the War - Avenger, the wielder of Absolute Retribution.
Fate: Nightmare Apatheia by Heavy Valor
- Recommended by: The Philosopher King, crazyeater, CptSparkles
- Crossover with: Fate/stay night
- Status: Dead
- Synopsis: Welcome to Fate/Nightmare Apatheia. Welcome to the war. The Holy Grail War becomes the deciding element in Charles' and the Grail's Assimilation Plot, leading to a guaranteed Gambit Pileup revolving around Servants and Immortals. One of each falls into the hands of two Ashford Academy students, Servant Saber for Shirou Emiya and the Immortal C.C. for Lelouch Lamperouge. With both Servants and Immortals scattered throughout the world, the Holy Grail War is escalated to a global conflict, promising a new release to Angra Mainyu, All The World's Evil.
Topple Your Kings by S. Silea (Link)
- Recommended by 7137, NHO, Andrzej.
- Crossover with High School D×D
- Status: Dead (last updated June, 2017)
- Synopsis: The board was wiped clean with Lelouch's death, and he found it replaced anew upon his awakening. When pieces begin to make themselves known, what else can he do but play?
- Comments: Steady pacing, POV switches, world-building, and exquisite characterization of Lelouch especially. Lelouch is very much the same Magnificent Bastard that he was in canon.
Forward Unto Dawn by Jaenera Targaryen
- Recommended by: Captain Silver
- Crossover with: Gundam
- Status: Dead
- Synopsis: A freak accident sends Zeon into the world of Code Geass...or is it? Whatever the reason, the opportunity awaits, to lead Humanity to a new era under Zeon leadership.
- Recommended by: Tar Amandil, Guessmyname
- Crossover with: Elfen Lied
- Status: Complete
- Synopsis: Lelouch first met Lucy when they were ten years old—a meeting that he no longer remembers. He's remained in the royal family ever since. Seven years later, they meet again in Area Eleven just as Lelouch is about to launch his bid for the throne...
Geass Rider Zero Knight by kyugan
- Recommended by: Little Serge
- Crossover with: Kamen Rider
- Status: Dead
- Synopsis: Lelouch Lamperouge had grown bored of the humdrum cycle that had become his life. Little did he expect to be drawn into a world of combat and intrigue, which lurked just beyond the looking glass. Let's Ride.
Hight of Power by Setsuna F. Satoru
- Recommended by: feral
- Crossover with: Death Note and Mobile Suit Gundam 00
- Status: Dead
- Synopsis: AU, takes place after all three series. When Lelouch returns as a Code Bearer and encounters a young man being chased down by the police in a warehouse district of Area 11 he knows his luck hasn't changed. Meanwhile Setsuna and the rest of Celestial Being are watching the events unfold with keen interest.
The Illusive Emperor by Nicolai Alvin Hubert
- Recommended by: romancechina88
- Crossover with: Mass Effect
- Status: Dormant
- Synopsis: The first crossover between Mass Effect and Code Geass by three writers who have joined together to write this fic. Where in this universe Humanity has problems with the Turians and the batarians as well. But in the Shadows lies a figure known only as the Illusive man, who is making his move to protect humanity's place in the galaxy.
JUSTICE by Slayer Anderson
- Recommended by: Darksidevoid
- Crossover with: Massive Multiplayer Crossover
- Status: Dead
- Synopsis: Lelouch, Zero, chose to make a stand against injustice, tyranny, and oppression. He never really expected to have to take a stand against zombies, bio-weapons, or Old Ones...Uh-oh.
Kings of Revolution by sephiroth12285
- Recommended by: WiseMan23753
- Crossover with: Lyrical Nanoha
- Status: Dead; last updated June 2020
- Synopsis: Born from betrayal and loss will arise the Dragon King who shall usher in the destruction of law and blanket all seas in darkness. However from a far-away land no longer free, the Demon King, born of loss and sorrow he shall lead us towards an age of peace shall rise up with his Knights.
Lelouch of the Atom by laguirre003
- Recommended by: KingOfTheLand
- Crossover with: Marvel Universe
- Status: Dead; last updated August 2017
- Synopsis: Betrayed by his own organization and left behind by someone he once called a friend, Lelouch found himself in a world unlike anything he has ever seen. Becoming a mutant, Lelouch will lead a team of his own X-Men, while searching for a way to get back home, trying to survive in a world that fears and hates him, before they even knew who he is.
Lelouch of the Shinigami Path by karndragon
- Recommended by: azul120
- Crossover with: Bleach
- Status: Complete
- Synopsis: Lelouch is shot dead by the Black Knights after being exposed by Schneizel and mysteriously ends up in the Soul Society where he becomes and rises up as a Shinigami of the Gotei 13. Based on Code Geass R2 Episode 19 and the Turn Back the Pendulum Arc of Bleach.
- Notes: Has a sequel - Dark Knights: Souls of the Guardians (Ongoing)
Lulu's Bizarre Rebellion by Ezit Meti
- Recommended by: GrantMK2, Second Son
- Crossover with: JoJo's Bizarre Adventure
- Status: Ongoing on SpaceBattles.com
- Synopsis: Lelouch Lamperouge was a boy with an ambition; To one day bring down the corrupt nation of Britannia and create a peaceful world for his sister. However, a single arrow gifted him a power that will help him reach his ambition. Stands... Ripple... A feud between two bloodlines that transcends time... And that's only the beginning of this bizarre rebellion!
- Comments: So far, the author has been able to keep all the elements that made Code Geass what it was while also keeping everything that made Jojo so great, rock references and all! Not to mention making Shirley something even more than just an innocent bystander. I highly recommend this fic, be it if you're a Code Geass or Jojo fan!
One and Only Son by Juubi-K
- Recommended by: Steve the Corn Muffin, Cirexreview, papercut
- Crossover with: Mobile Suit Gundam 00
- Status: Ongoing
- Synopsis: After the Kingdom of Krugis falls to Britannia in 2004 ATB, Knight of One Bismarck Waldstein adopts a young Soran Ibrahim (Setsuna F. Sei) as his son and rechristens him as Alexander B. Waldstein. As he grows into a young man, Alexander must deal with all the hazards and intrigue of Britannian court politics, war, the growing issue of terrorism and unrest in the far east, romance, and his own personal insecurites of being a foreigner raised in a society of bigoted elitists. Oh, and the other Gundam 00 characters are going to be in it, as well.
Pokemon: Lelouch of the Revolution by Sam Jaz
- Recommended by: Arc Varanus
- Crossover with: Pokémon
- Status: Complete
- Synopsis: In a world where pokemon are used as the fulcrum of industry and warfare in liu of Knightmare Frames, one boy is given the power to strike back at the heart of the nation that betrayed him - the power of the King.
Red Geass by elarielf
- Recommended by: Candelabra
- Crossover with: The Mentalist
- Status: Complete
- Synopsis: The death of a person of unknown origin at Ashford Academy wouldn't normally warrent the Area Burreau of Investigation. But when the suspects are an Eleven in the military and his odd friend, Jane might be a little too good at his job for his own good.
Roanapur Connection by Waggleton and Blackmambauk
- Recommended by Romancechina 999
- Crossover with: Black Lagoon
- Status: Dead; rewrite coming soon
- Synopsis: The familiar tale of world powers: where one falls, another is prepared to take its place. But, this shift in dominance finds the living squatting within the city of the dead. Times have changed and the fates of millions rests in the hands of the few. They must band together or face a dark age this world has never seen. Prequel to Code Geass: Colored Memories.
Something Wicked This Way Comes(FF.net link) by VereorNox
- Recommended by: Green Goblin
- Crossover with: Re:Zero
- Status: Dead, last update was on May 5th, 2020
- Synopsis: Lelouch thought his life over as the sword stabbed him. Instead, he woke up in a different world without his people, his power, and his money. Turning to the magic of this world to achieve his goals, Lelouch begins a crusade when the people he left behind are threatened. Even if it meant dying over and over again to achieve his goals.
Lelouch of the Wings of Rebellion (FF.net link) by MagusZero.
- Recommended by: Andrzej
- Crossover with: Persona 5
- Status: Ongoing
- Synopsis: In an alternate world without Geass, Lelouch awakens to another power from the collective consciousness — Persona. Leading a band of phantom thieves through the Metaverse, he seeks to topple the Britannian regime, stealing one corrupt heart at a time. Featuring the cast and setting of Code Geass, put into Persona 5's overarching scenario.
- Comments: The premise is deceptively simple: replace the supernatural elements of Code Geass with those of Persona 5 and then everything else falls into place accordingly. Without his Geass and with a power that only works in the Metaverse, Lelouch can't precisely start bloody revolution, but someone like him can't miss the appeal of making influential figures of Britannian society confess their crimes out of their own mouths in an attempt to create the gentler world he wants for his sister that way. Also, the power of the Wild Card almost literally runs on The Power of Friendship, forcing Lelouch to carefully cultivate his interpersonal relationship for very pragmatic reasons at first, but less and less so as time goes. His strategic and tactical genius still have an important place in the story, but wielding Guardian Entities in a Mental World changes the nature of the battles where only his and his teammates' lives are in real danger, but giving Lelouch much less opportunities to cheat his way out of straight fights like with his Geass in canon. All in all, Lelouch feels like a more Small Steps Hero than in the series, and in turn his interpersonal relationships become less overblown and plagued with larger-than-life drama, which is a big plus in my opinion. Also, Lelouch gets a girlfriend as a direct result of being an actual friend to his Confidants. Just putting that out there.
Soul Chess by draconichero21
- Recommended by: Rock2161
- Crossover with: Bleach
- Status: Complete
- Synopsis: After the Zero Requiem, Lelouch goes to the Rukongai. There he meets Gin and Rangiku, and shortly decides to become a soul reaper. The story follows Lelouch as he becomes a soul reaper and rises through the ranks.
The War Of Kings by Pale Wolf
- Recommended by: Jiven
- Crossover with: Fate/stay night
- Status: Dead; last updated August 2011
- Synopsis: The Holy Grail War is taking place in Fuyuki at the same time Kallen's resistance is stealing CC. When Lelouch protected that purple-haired girl from the fighting between terrorists and Brittanians, he didn't think he will be able to seize an extraordinary opportunity. Lelouch, as Master of Lancer, will try to grasp this wish with his own hands and to destroy Britannia. And doing his level best to put some more 'war' in the Holy Grail War.
- Notes: Alternate links here and here.
Zero vs Kira by CrossoverManiac
- Recommended by: feral, Unclouded TJ
- Crossover with: Death Note
- Status: Dead
- Synopsis: A Britannian world-breaching experiment brings Light Yagami to the Code Geass world. Now Light is out for Britannian blood... and Lelouch is jealous.
Code Prime - R1: Rebellion by Iron117Prime (Link)
- Recommended by Amazing Cartoon Hero
- Status: Complete
- Crossover with: Transformers
- Synopsis: Lelouch Vi Britannia made a vow to destroy the Holy Empire of Britannia and create a peaceful world with for his sister Nunnally. However, he will soon learn that while he has gained valuable allies he will face an enemy far eviler than Britannia could ever hope to be. Battle lines are drawn as two wars collide into one. (Transformers: Aligned Continuity (Prime, WFC, FOC, RID))
Code Geass: Paladins of Voltron by W.I.T.C.H-and-Naruto-Girl (Link)
- Recommended by Amazing Cartoon Hero
- Status: Ongoing
- Crossover with: Voltron: Legendary Defender
- Synopsis: "One day on a hiking trip, the student council from Ashford Academy discover a cave filled with lion and catlike drawings. Within the cave they discover a huge robotic lion that is one of seven pieces to a giant robot named Voltron: the Defender of the Universe. Will Voltron be enough to free Japan?"
Knight of Death and Rebirth by sephiroth12285
- Recommended by: WiseMan23753
- Crossover with: Monster Girl Encyclopedia
- Status: Ongoing
- Synopsis: Lelouch is given a chance by an unknown individual to visit another world where he could gather allies and resources. However, things are not so simple as the world is a fantasy world that has a Forever War between the Order of the Cheif God and monster girls who are infamously horny. Unable to accept the climate of either world, Lelouch seeks to change both worlds while preparing to confront an enemy that seeks to destroy everything.
Zero Requiem by Halt.CPM (Link)
- Recommended by gadeel
- Status: Ongoing (last update - May 2022)
- Crossover with: A Song of Ice and Fire
- Synopsis: Lelouch dreamed about the past glories of his Valyrian family, when they'd held great keeps and their fleets ruled the Narrow Sea. But some nights, he dreamed of a life that wasn't his. He dreamed of an empire, war, and tyranny. Most of all, Lelouch Velaryon dreamed of revolution. (Lelouch from Code Geass inserted into ASOIAF, set in the War of the Ninepenny Kings era).
- Alternate link here.
Black Knights, Arknights by Flameal15k
- Recommended by KnightSpark
- Status: Ongoing
- Crossover with: Arknights
- Synopsis: Seven years ago, Lelouch and Nunnally vi Britannia disappeared off the face of the Earth. Now, they have returned, and alongside a new order of Knights, they will change everything.
Code Jedi by DarkerEvening (Link)
- Recommended by ArchmarschalVonLowen
- Status: Ongoing
- Crossover with: Star Wars
- Synopsis: Luke Skywalker and his friends find themselves on a world ruled by the ruthless Britannian Empire. Soon, they cross paths with an exiled prince, who comes to wield a mysterious power. Two rebellions will unite as one in a fight for freedom against Britannia and the Galactic Empire. But when Darth Vader arrives... Hell is sure to follow. (Revision of R1 and The Empire Strikes Back)
Code Prime - R2: Revolution by Iron117Prime
- Recommended by dudeu
- Status: Complete
- Has a tv trope page which is shared with R1: Rebellion.
- Crossover with: Transformers
- Synopsis: The Holy Britannian Empire has fallen and Megatron and the Decepticons are well on their way to conquering all of Earth. However, all is not lost. Ever since the Decepticons began their rule, Lelouch and Optimus Prime have managed to secretly gather reinforcements to help them in their cause of ridding Earth from the scourge of the Decepticons, and with Optimus having a new power, the tide may turn in their favor very soon. However, the Decepticons may have a few more tricks up their sleeve. (Transformers: Aligned Continuity (Prime, WFC, FOC, RID))
