B'T X — Season 1, Episode 18: The Dark! Fear of the Underhell

Episode synopsis

Kotaro struggle to figure out a way to destroy Raphael! If Raphael keeps metamorphasizing, he'll absorb the entire planet! Kotaro has to figure out WHAT Raphael is and keep from being killed by his jailer in UnderHell! Meanwhile, Fou, must battle one of the Dark Knights to save Karin!Episode summary graciously provided by Vortex Fansubs

About B'T X

After years of absence, Teppei’s joyous reunion with his brother is cut short when the two brothers are attacked. When his brother is kidnapped, Teppei gives chase only to find himself cornered in a junkyard when a miracle appears. His spilled blood awakens the legendary B’t X.

More episodes from Season 1

• E1Miracle! The Revival of B't X
• E2Rebirth! The Sun Battler
• E3Confrontation! The Machine Empire
• E4Appearance! The Legendary Spirit Knight
• E5Departure! Desperate Battle Road
• E6Fear! The Watch Man, Pirate in the Desert
• E7Frightening! The Mystery of the Machine Emperor
• E8Magnificent! The Dazzling Soldier, Kamiura
• E9Fear! Evil Flower
• E10Chase! Metal Face Counter attacks
• E11Invincible! Spirit General of the East, Ron
• E12Formidable Enemy! The Warrior, Kaos