Crimson Challenge! The Volcano's Last Big Eruption (真赤な挑戦! 火の山最期の大噴火 Makka na Chōsen! Hi no Yama Saigo no Dai Funka) is the fifty-fourth episode of Himitsu Sentai Gorenger. It features the destruction of Volcano Mask General Magman and his Mobile Fortress Navarone, as well as the Gorenger Machines, and the first appearance of his successor Commander-in-Chief Golden Mask. It also features a temporary departure by Daita Oiwa as Kirenger, he would be replaced by Daigoro Kumano for the next thirteen episodes.