The brother of Teppei, Kotaro, a scientific prodigy, is abducted by the Machine Empire. Driven by desperation, Teppei pursues them, finding himself within the Empire's territory. There, he is confronted by B't Madonna and her donor, Metal F…

Teppei believes he has secured a powerful ally in Karen’s formidable partner, X. He soon discovers he is mistaken. Shortly after Metal Face and his B't Madonna depart, X and Teppei are ambushed by the Fifth Unit Ryukon Troops. Can Teppei an…

X’s original creator is Karen, and he will answer only to her. Driven by this loyalty, he will do whatever is within his power to eliminate Teppei and reunite with Karen. Finally understanding that X is more than just a machine, Teppei rele…

X has at last agreed to work with Teppei. Unexpectedly, one of the Machine Empire’s most formidable warriors appears before them. Fou Rafine, wielding his B't Je'taime, unleashes a sonic attack known as the Deadly Carol. X and Teppei have n…

Following his latest conflict, Teppei arrives at Fou’s chapel to find him tending to his wounds. X, however, lies inert and unresponsive. The assassin Kaas, a soldier of the Machine Empire, appears and takes several children hostage, intend…

Teppei and X finally reach the first checkpoint. There, they encounter a colossal robot named Big Rock, piloted by a young boy called Gaku. The robot proves no match for X, and then the true guardian of this point emerges. It is a B't named…

X and Teppei believed Captain Hook and his B't had been vanquished, but such was not the case. Hook unleashed a demonstration of his weapon, the Hanging Rod, nearly incinerating them. His B't Groupie also revived, returning to attack them o…

The insidious fumes of "Heavy Steam," released by Groupie, have poisoned Gaku. X and Teppei must hasten to the next location, a haven where an oasis lies. There, they hope to cleanse themselves and Gaku of the toxin. However, a significant …

Teppei and X shatter the illusion's hold. X pursues the B't Mirage, while Teppei sets his sights on Kamiura. Both men are already afflicted by the Evil Flower pollen. Kamiura assaults Teppei with illusions, forcing him to overcome yet anoth…

X and Teppei are ambushed by the B't Madonna and Metal Face, who force them into a perilous valley. Here, the wind itself is a deadly weapon, capable of utterly destroying any B't who lingers. Yet, salvation arrives in the form of Professor…

Suddenly, B't Raido materialized before Teppei and X. His benefactor is Ron, a warrior renowned throughout the Machine Empire. Teppei and X have never encountered an opponent quite like him. He wields power akin to that of one of the Spirit…

Teppei and X press onward into the depths of the Area, where they encounter a peculiar old man named Kaos. Once, Kaos and his B't Lamu were renowned warriors in the service of the Machine Empire. Now, X and Teppei must fight desperately for…

Lamu and the warrior Kaos are formidable opponents. Kaos strikes, severing Teppei’s Battle Gear. Yet, Teppei and X are determined to prevail, whatever the cost. Their bond will deepen into a strong friendship. *Episode summary courtesy of V…

Teppei and X reached the next location to find themselves in a vast graveyard. Dominating the center was an enormous tree, its branches adorned with skeletons. There, they encountered a girl named Maria, who spoke of a terrible evil dwellin…

The Reaper has inflicted grievous wounds upon X, plunging both X and Teppei into perilous circumstances. Their only hope lies in forging a powerful alliance, a desperate measure to avert utter annihilation and honor Maria’s aspirations.

Teppei and X are finally together. With the Prism of Aura reactivated, they have vanquished the Reaper. Yet, X bears grievous wounds from the conflict, and a new adversary now confronts them. X faces a perilous fate. *Episode summary pr…

With his end near, X strives to carry Teppei as close as possible to the elusive Area. But their desperate flight is interrupted by the arrival of another assassin from the Machine Empire: Rai, of the Dark Knights. As Teppei and X fight bac…

Kotaro wrestled with the desperate need to find a way to destroy Raphael. Each transformation brought the creature closer to planetary consumption, and the weight of that possibility pressed heavily upon him. He had to understand what Rapha…

X is fading, and in that moment, Mira, one of the Dark Knights most formidable warriors, appears to intervene. Teppei attempts to shield X from the conflict with his Messiah Fist, yet X desires no such protection, launching attacks of his o…

Awakening after the fierce battle, Teppei is confronted with a horrifying sight: X lies in fragments before him. Someone has systematically dismantled his beloved partner. He soon learns that Hokuto and B't Max – legendary Spirit Knights of…

Hokuto has, in fact, saved both Teppei and X. B't Max has rebuilt X into the Neo B't X!! A more formidable, enhanced version than before. As X and Teppei fled from B't Max’s grasp, they were once again assailed, this time by Balzac and his …

Teppei and X reunite with Fou and Je'taime, as well as Hokuto and B't Max. Together, Teppei and X must fight their way through the formidable defenses of the Machine Empire. The strength of their adversaries is truly astonishing. They must …

The struggle to vanquish B't Lalaynya and her progenitor, Myslim, feels unending. Despite the efforts of X and Teppei, she regenerates, relentlessly pursuing them anew. The battle has been arduous. Will X and Teppei ultimately prevail again…

Teppei and X realized they had overcome Lalaynya, yet Myslim remained. The villain retaliated with his Cyber Whip, striking Teppei. The resulting poison robbed Teppei of his sight. Forced to rely entirely on X, Teppei placed his trust in hi…

Hokuto and Fou journey toward the Area, seeking answers regarding the Machine Empire. Meanwhile, X and Teppei also intend to enter, but Ron of the East endeavors to block their path. He demands that Teppei demonstrate possession of a fragme…