General Characteristics
Model Number RMI-14
Codename Portman II
Unit type Mass Production Amphibious Fifth Generation Knightmare Frame
Manufacturer Britannic Defense Systems plc
Operator Britannian Empire
Dimensions Overall Height: 4.69 meters
Weight Combat Weight: 6.27 metric tons
Powerplant Yggdrasil Drive (Mark III)
Equipment and Design Features
  • ECR35 Multispectral Sensor System
  • LSP23 Landspinner Propulsion System
  • HJ32 Hydrojet Thrusters
Fixed Armament
  • 8 x TT50 Torpedo Launcher
  • 2 x ENN90 Slash Harken
Optional Armament
  • 1 x MP51 25mm Assault Rifle w/ 60mm Grenade Launcher
  • 1 x MC200 90mm Bazooka

The RMI-14 Portman II is an amphibious knightmare frame produced and utilized by the Britannian Empire in Code Geass Megiddo.


Its original incarnation, except now painted blue instead of yellow.


An upgrade of the original RMI-13 Portman, the RMI-U14 Portman II is a modest improvement over its predecessor. Its main feature is a highly refined, streamlined silhouette that reduces water drag, and stronger hydrojet propulsion, which allows it to operate underwater more effectively, though the unit is still quite lackluster on land. As well, another refinement is the claw hands from the original being replaced with standard hand manipulators, allowing the Portman II to wield normal hand weapons.


  • TT50 Torpedo Launcher
The Portman II's main armaments. Mounted in its shoulders, the torpedoes are more or less standard issue for amphibious knightmares, meant to be effective against both warships and smaller targets like patrol boats or other knightmares. These weapons are only useable underwater, both for obvious reasons and because they are fired from an upward position.
  • ENN90 Slash Harken
The Slash Harken is the signature weapon of the Knightmare Frame, and is used by almost all KMF models. Slash Harkens are wire-guided projectiles with some form of anchor-like blunt object at its tip. They can be used in multiple ways varying from offensive to defensive, or as a means of transportation via anchoring them in an object, and retracting the cable. The Portman II carries the ENN90 model, which is the type used by the RPI-13 Sutherland and its derivatives.
  • MP51 25mm Assault Rifle w/ 60mm Grenade Launcher
The standard Britannian knightmare-grade assault rifle. Fashioned after a submachine gun, it fires a multitude of bullet types, and is equipped with a supplementary grenade launcher overhead. Bullets are supplied through clips and the grenades are supplied through revolver-type cylinders respectively. In terms of penetration power, it is effective against both light armored targets, such as other knightmares, and heavy armored targets like tanks and (to some degree) warships. Because the Portman II is equipped with traditional hand manipulators, it can utilize the assault rifle. However, it is only equipped with these weapons for amphibious operations.
  • MC200 90mm Bazooka
The standard Britannian knightmare-grade bazooka. Meant to be used against heavy targets, the bazooka can fire a variety of warheads, ranging from HE rounds to even adhesives and chemical weapon types, all at long-range. In turn, its destructive power is enough that it can break most forms of shielding as well as pierce ship and fortress level defenses. Unfortunately, along with the slow firing rate and limited ammo. Because the Portman II is equipped with traditional hand manipulators, it can utilize the bazooka. However, it is only equipped with these weapons for amphibious operations.

System FeaturesEdit

  • ECR35 Multispectral Sensor System
Due to its unique operational setting, the Portman II features a somewhat different sensor system than land based units. Besides the standard radar and infrared systems, the Portman II also includes a sonar system, which is its primary means of detection underwater. As a side note, the Portman II is one of the few knightmare types to forgo a traditional camera system, such as a factsphere; as such, it is almost entirely reliant on its analogue sensor systems, both underwater and on dry land.
  • LSP23 Landspinner Propulsion System
As with its land based brethren, the Portman II carries landspinners. However, since the Portman II was designed to primarily function underwater, its landspinners are somewhat more primitive compared to that of regular land units, taking a tripod design along the Portman II's pod-like legs, with a pair of traditional extended units to provide stability. Marine pilots refer to Portman IIs as "peg legs" for this reason, while non-Marine pilots refer to them more sardonically as "stilts" or "office chairs", the latter due to the landspinners' arrangement and their uncanny resemblance.
  • HJ32 Hydrojet Thrusters
As with its predecessor, the Portman II features hydrojet mounted on its cockpit pod (above its air glide wings) for additional mobility underwater. Only this time, the Portman II has them equipped in every area outside its main body, from its arms and legs to the back of its cockpit pod. As such, it has nearly unprecedented speed as an underwater unit, while its forearm pods can be utilized for directional control. For this reason, the Portman II would be unmatched as an aquatic knightmare for a time, until the coming of the European Union's Haie and the Black Knights' Akatsuki Mizushiki.


Produced as the first amphibious knightmare frame, the RMI-13 Portman was something of an odd duckling in the Imperial Marines. Noteworthy for its ugliness and its lumbering nature, it became a vocal point for critics who believed marine knightmares were impractical. However, the design would prove itself many times through its service, such as the destruction of the Japan Liberation Front during the Japanese Insurrection and various naval skirmishes between Britannia and the European Union. Thus Britannia decides to produce an improved model Portman, using the lessons learned from the original. The end result is the Portman II.

Years later as Britannia's adversaries were slow to field amphibious knightmares of their own (if at all), the Portman II has remained in service and has been a valued asset of the Imperial Navy. However, like its land based cousins, the RPI-13 Sutherland and the RPI-209 Gloucester, the Portman II has begun to be phased out in favor of newer knightmare frames; in the Portman II's case, the eighth generation RMI-21 Bristol is slated to replace it as Britannia's mainline amphibious knightmare.