The Byakuen (白炎, Byakuen, lit. White Flame) is a custom Knightmare Frame based off the predecessor to the Guren Mk-II, the Guren Mk-I, that was first developed in the Militarized Zone of India. Like the Guren, the Byakuen is superior to fifth generation Britannian Knightmare Frames, and its technology is on par with most seventh generation Knightmare Frames. The Byakuen also features the same cockpit layout and motorbike-shaped pilot seat as the Guren, and has a beetle-like horn sprouting from the top of its head. The only existing unit is in the possession of the terrorist organization "Peace Mark" and is piloted by Orpheus Zevon.