Fourth generation Knightmare Frames that were the first to be used in actual combat. It was the basis for the various Knightmare Frames that are developed later. Britannia Empire used them as their main weapon when they conquered Japan. They completely crushed the ordinary weapons Japan used. Currently it is an old model, as one can see from the declining number of use in the field. It is equipped with STUN-TONGPHER, SLASH-HARKEN, and ASSAULT RIFLE.
RPI……Royal Panzer Infantry