Code Geass Fanon Wiki
General Characteristics
Codename Leviathan
Unit type Amphibious Sixth Generation Knight Giga Fortress
Manufacturer Unknown
Operator Eurasian Union
Dimensions Overall Height: 15.37 meters
Weight Combat Weight: 60.39 metric tons
Powerplant Yggdrasil Drive (Mark V)
Equipment and Design Features
  • Mono-Eye Sensor Camera
  • Multispectral Sensor System
  • Float System
Standard Armament
  • 1 x Mega Blitz Cannon
  • 2 x Battle Claw

The Leviathan is a Eurasian Knight Giga Fortress in Code Geass Megiddo.


The Knight Giga Fortress version of the Shamblo from Mobile Suit Gundam Unicorn. As usual, it is colored in Eurasian hellgrau instead of red, and of course lacks the Sleeves markings.


A product of the "Missing" Sixth Generation, the Leviathan was developed around much experimental technology for its time. Its primary feature is a built-in float system, which is mounted in its main body and sub-arm units. Much like the Britannian Vortigern, the float system grants it exception ground mobility for its size as well as the ability to move both on land and in water. Using this feature along with its ability to transform into a submersible form, the Leviathan can achieve low noise conditions and high mobility while underwater, making it an ideal amphibious assault unit.

For armaments, the Leviathan, as a Knight Giga Fortress, is heavily equipped with cutting edge weaponry that would be impossible for a Knightmare Frame to utilize. Its primary weapon is a prototype mega blitz cannon mounted in its maw, which has both high range and destructive power, while two massive claw tipped arms are supplemented for melee capability. Though seemingly limited, these two types of armament are all the Leviathan requires to inflict massive destruction both on land and sea based targets.


One of the myriad "phantom" weapons that may or may not actually exist, the Leviathan was supposedly developed well before the Great World War as part of a Eurasian strategy to directly invade the Britannian homeland. Obviously this strategy, which itself may or may not have existed, never came to fruition, and so much like its "sibling", the land-based Behemoth, there is much doubt cast on the knight giga fortress' actual existence, or that Eurasia had even conceived of such a terrifying weapon beyond propaganda purposes. On the other hand, as the Great World War continues on, both Eurasia and Britannia begin to roll out weapons and technology that they purportedly did not possess during the early stages, leading some within MI6 and other intelligence apparatuses to believe that the Leviathan and similar instruments not only exist, but that Eurasia indeed plans to utilize them during a pivotal stage of the war. For the time being however, there have been no known sightings of the Leviathan, or any indication of its actual development.