Code Geass Fanon Wiki
General Characteristics
Codename Caius
Unit type Knight of Five Dedicated Seventh Generation Knightmare Frame
Manufacturer Britannic Defense Systems plc
Operator Britannian Empire
Dimensions Overall Height: 4.49 meters
Weight Combat Weight: 7.17 metric tons
Powerplant Yggdrasil Drive (Mark V)
Equipment and Design Features
  • Dual Factsphere Open Sensor Camera
  • Dual-Eye Sensor Camera
  • Multispectral Sensor System
  • Landspinner Propulsion System
Standard Armament
  • 2 x Maser Vibration Broadsword
  • 2 x Maser Vibration Knife
  • 2 x Blaze Luminous
  • 2 x Slash Harken
  • 1 x Flash Cannon
  • Michael Raleigh

The Caius (whose name is the Latinized spelling of "Kay") is the chosen knightmare frame of Michael Raleigh, the Britannian Empire's Knight of Five in Code Geass Megiddo.


Looks like the Sword Calamity from Mobile Suit Gundam SEED MSV, but as a Knightmare Frame. Its general layout is exactly like that of the Sword Calamity, except with certain details, such as the original "humpback" acting as a cockpit block and landspinners being equipped on the legs. Colors are also like its base: orange and white with gold highlights.


As one of the Knights of the Round, the twelve greatest warriors in the Britannian Empire, Michael Raleigh, better known as the "Paladin of Britannia" for his habit of charging straight into enemy formations and wiping them out down the center at close-range, was permitted a custom knightmare frame as a testament to his prowess on the battlefield. In similar fashion to how Nonette Enneagram designed her Ywain, Michael chose to design the Caius around his own combat style, creating a basic yet advanced design that excelled in the fields of close range combat, mobility and durability.

As opposed to most seventh generation knightmares being equipped with advanced weapons and systems such as hadron cannons, VARIS rifles or Druid Systems, the Caius' only offensive armaments are set close combat weapons, namely bladed weapons and slash harkens. Its main set is a pair of maser vibration broadswords, which are essentially basic MVS with enlarged blades (as tall as the Caius itself). Though the elongated blades give the Caius greater reach when performing swordplay, they are otherwise little different from standard maser vibration weapons. Following these are a pair maser vibration knives, which are meant for fighting in confined spaces where the broadswords cannot be used, two arm mounted slash harkens that also mounted "Blaze Luminous" projectors at their bases and a chest mounted flash cannon which, as its name suggests, functions by emitting a large flash that can momentarily blind both conventional sensors and the naked eye.

While it holds only a "basic" weapons layout and lacks any of the higher tech electronic systems or features, the Caius' retains all the high performance of its generation. In fact, this is where its main strength lies, as the Caius is essentially a juggernaut unit meant to charge through enemy groups and wipe them out without hindrance. For this purpose, it is extremely fast as well as highly maneuverable, while its heavy armor allows it to weather blows that would destroy any other knightmare. All of this combined with the Knight of Five's proficient yet highly aggressive combat style ensures that the Caius is a force to be reckoned with.


Created for Michael Raleigh, Knight of Five and "Paladin of Britannia", the Caius would make its debut during the Great World War. Notably it would see service on the Western Eurasian Front, in which Michael took a direct role in the invasion of Spain and France, and later on in Area 22 (China), where he would fight against the Chinese Liberation Army (namely against General Li Xingke himself and his Tianshou Team) alongside the newly returned Black Knights.