A SpinOff of the ''Franchise/CodeGeass'' franchise, ''Oz the Reflection'' uses the same formula as the highly successful ''Manga/MobileSuitGundamSEEDAstray'', using different mediums to tell an interconnected story of two long-lost siblings, both nicknamed "Oz" by their friends. The manga component focuses on Oldrin Zevon, a member of the Glinda Knights (Britannia's anti-terror taskforce) and pilot of the Lancelot Grail. The photh-novel focuses on Orpheus Zevon, member of the anti-Britannian terror group "Peace Mark" who seeks vengeance for his lover's murder. A PictureDrama was released on January 10th 2013 attached to that month's issue of Newtype Ace.

The story begins when Oldrin and Orpheus meet in person in the Middle East...

''Oz the Reflection'' is one of two canon spinoffs following the Code Geass revival. The other, ''Anime/CodeGeassAkitoTheExiled'', also occurs in the same timeframe.

* AceCustom: Loads of them for both sides.
* AmbiguouslyGay: Marrybell is pretty damn affectionate towards Oldrin. Sometimes it stretches to areas that... must be seen to be believed (see LesYay on the YMMV page).
* ArrangedMarriage: There is one between Leonhart and Marika. Though, they are actually in love.
* BigGood: Marrybell is in charge of the Glinda Knights.
* BilingualBonus: The Amanacer from ''SIDE: Oldrin O2'' is a customized Akatsuki; both names come from their respective languages' words for "dawn".
* CallingYourAttacks: Despite being a RealRobot series, Oldrin and her crew have a tendency to shout out things like "Knight's Strike!" and "Sattel Waffen!" whenever they attack.
* ClothingDamage: Oldrin, Marika, Marrybel, Oldrin...
* DangerouslyShortSkirt: Oldrin.
* DarkAndTroubledPast: Orpheus suffers through one; Princess Marrybel also suffers through another.
* DoomedByCanon: Rolo is keeping an eye on Lelouch at the beginning of R2, so it's only natural that Clara is gonna die.
* GambitPileup: Everyone attached to the Geass cult.
* HeroicBSOD: Sokkia, who had previously been a member of the KMF Leagues (think UsefulNotes/RollerDerby [[InstantAwesomeJustAddMecha with mecha]]), develops CSR (combat stress reaction) after seeing battle for the first time. As a result, her hands get shaky when she thinks about combat and for a while it's unclear if she'll retire from the Glinda Knights.
* IJustWantMyBelovedToBeHappy: Clara in a twisted way.
* IKnowYourTrueName: Clara Lanfranc has the Geass power to [[PeoplePuppets take control of peoples' bodies]] if she looks them in the eye and speaks their true name. [[spoiler:She tries using the power against "Oldrin", but it fails because it's actually Orpheus in disguise, and he's smart enough to kill her before she can give it a second chance.]]
* InsecureLoveInterest: In one chapter, Leonhardt admits that he's considered breaking off his engagement to Marika because he doesn't feel worthy of her. He gets over it.
* KnightTemplarParents: By the bulk. VV is shown to be one too.
* TheEmpire: Britannia, self-righteously so.
* TheWarOnTerror: Marrybel declared war on all terrorists, not only the Black Knights, in a somewhat realistic way.
* LethalChef: Marika is known as one, but she insists it only happened ''once'' (she got nervous and put too much pepper in a meat pie).
* PropagandaPiece: InUniverse, it's shown that Britannia prints manga loosely based off Oldrin to serve as propaganda. Emphasis on "loosely": one story is your standard {{Shoujo}} fare with schoolgirl Oldrin pining after her sempai Leonhardt, while the other is a ShoutOut to ''Manga/TigerMask''. Both stories have the real Leonhardt in stitches.
* PragmaticAdaptation: Both the manga and photo novel have very different version of the events in Béjaïa base. The manga featured out-and-out battles, where Orpheus demolished both Leon and Tink, whereas in the novel it was a more quiet, stealthy afair. Both ended in a draw between the Byakuen and Lancelot Grail though. Furthermore, Orpheus tried slitting Oldrin's throat in the manga, whereas it was the other way around in the novel.
** Furthermore, the novel has an alternate version of ''Anime/CodeGeassAkitoTheExiled'''s first episode, taking place in St. Petersburg instead of a forest.
* MadeOfIron: Leonhardt, Oldrin and Tink took a lot of injuries each in their first battle, though survived to fight again. Later it's revealed Leonhardt undertook extensive surgery and was implemented with various synthetic parts, and Tink was already a cyborg since several years ago.
* MomentKiller: In Chapter 6, there's a wonderful heartfelt moment between Leonhardt and Marika...which Tink gloriously destroys by saying "Oh hey, you're the fiancée who makes the super-spicy meat pies!", making both of them FaceFault.
* MsFanservice: Every girl.
* MythologyGag: The design of the Test-Type Lancelot (the basis of Oldrin's Lancelot Grail) comes from an early design version of Suzaku's Lancelot that was used in some promotional artwork.
* NotWhatItLooksLike: In one chapter, Leonhardt is having trouble getting into his pilot suit and Tink offers to help. Then the elevator doors open, and Oldrin sees Tink standing behind a half-dressed Leon, with his hands seemingly on the younger man's waist as the latter complains "It's not gonna fit!" She responds by whacking them with her (sheathed) sword.
* NotSoDifferent: Marybell's backstory is almost identical to Lelouch's[[note]]Lost their mothers to a supposed terror attack in the middle of Britannian territory (that was actually carried out by V.V.), asked the Emperor to do something about it, and not only got the cold shoulder but lost their claim to the throne for their troubles[[/note]] and she has the same motivation (to make the world a place where her loved ones can be safe and happy). The main difference is how they reacted to their respective losses: Lelouch suspected Britannia of being complicit and became a terrorist, while Marybell stayed loyal to Britannia and formed an anti-terrorism taskforce. As a result, it's no surprise that [[spoiler:she willingly joins forces with Lelouch once he becomes Emperor and enacts the Zero Requiem plan.]]
* TheReveal: [[spoiler:Wizard is Oiaguro Zevon, Oldrin and Orpheus' uncle.]]
* RoboticReveal: In Chapter 6, Tink sustains some heavy damage that reveals machinery on the left side of his body; he admits to Leo and Marika that over 30% of his body was replaced by cybernetics due to injuries sustained before he joined the Knights.
* ShoutOut: The whole thing is full of references to ''Literature/TheWizardOfOz'', but ''Side: Oldrin'' even moreso. The '''Glinda''' Knights members are all parallels to Dorothy and her friends, and just to drive the point further home, in the prologue chapter Oldrin sings "Somewhere Over the Rainbow" to herself.
** Taking it a step further, the final chapters of the story introduce a Knight Giga Fortress named [[Literature/{{Wicked}} Elphaba]].
* SparedByTheAdaptation: Leonhardt saves Marika during the Second Battle of Tokyo.
* SpinOff: The second canonical one, behind ''Anime/CodeGeassAkitoTheExiled''.
* SuperPrototype: This series features Super Prototypes ''of'' Super Prototypes! Oldrin's Lancelot Grail is upgraded from the test-type version of Suzaku Kururugi's machine, while Orpheus's Byakuen was based off of the Guren Mk-I, and Leonhardt's Bradford is the prototype to the Tristan. Wizard's Agravain is said to be 79% identical to Lelouch's Gawain (and strongly resembles the mass-production Gareth from ''R2''), but their exact relation is unknown.
* SwappedRoles: [[spoiler:In the transition between the first and second "seasons", Orpheus adopts the masked identity of "Lyre" and becomes the Glinda Knights' ace pilot while Oldrin joins an anti-Britannian resistance group in Area 24 (Spain). They even get new {{Ace Custom}}s: Lyre uses a Vincent while Oldrin gets an Akatsuki.]]
* SwissArmyWeapon: The Byakuen has an almost a literal example: its right arm is equipped with "Type 7 Integrated Armament", which means it has seven different weapons packed into its oversized forearm (including scissors, [[ThisIsADrill a drill]], and a long-range cannon) and can pop them out like tools from a Swiss army knife as needed.
* TomboyishName: "Oldrin" isn't the sorta name you'd expect a girl to have, really.
* UnPerson: [[spoiler:Clara Lanfranc, the ''first'' person the Geass Directorate sent to spy on Lelouch while pretending to be his sibling, got erased from everyones' memories after Orpheus killed her and was subsequently replaced by Rolo Haliburton.]]
* UnprovokedPervertPayback: During the above-mentioned NotWhatItLooksLike scene, Oldrin accidentally lifts up Marybell's skirt while smacking the guys with her sword, giving everyone a nice look at her panties. When we return to the scene, Oldrin has a red slap mark on her cheek while the guys are lying on the ground behind her, having been beaten senseless. Since it's not really Mary's character, odds are Oldrin was the one who beat them.