During the final stretch of the side mission, "Kanbei and the Overlord", if the player runs to the locked door they can learn the name of the hidden Revenant before the second wave of enemies appears. Its name is Sugitani Zenjubo, a real-life samurai who was captured by daimyo Oda Nobunaga after the Siege of Kanegasaki in 1570 and sentenced to death by beheading. This event is alluded to in the Revenant's dialogue, and in its Blood Grave where it specifically names Nobunaga as the cause of death, the only instance of a Blood Grave with an identified culprit in the game.