This Kamen Rider Black RX Bio Rider edition from Bandai's S.H.Figuarts line captures every detail of the character's armor and headgear. The figure presents a sleek, battle-worn silhouette in a deep black matte base with subtle metallic highlights that catch the light at the edges. The helmet's insect-inspired crest, sharp eye sockets, and angular facial plates are crisply sculpted to evoke the original suit. Panels across the chest, shoulders, and gauntlets are re-created with segmented plating that hints at the suit's bio-armor technology. The belt features the Gaia Drive motif with precise decals and a working buckle. Interchangeable hands enable dynamic poses, from clenched fists to gripping weapon poses. Optional energy parts can be attached to the forearms or belt to simulate energy blasts. The articulation is designed to preserve silhouette while allowing dramatic action stances, and the joints are concealed for a clean display.

Bio Rider is introduced as a bio-mechanical powerhouse that challenges the protagonists with rapid moves and deadly force. Born from the experimentations surrounding the Kamen Rider Black RX universe, Bio Rider embodies the darker side of bioengineering, blending human will with machine-grade plating and energy cores. He appears as a rival who pushes the hero Kotaro Minami to test his limits, forcing him to confront themes of power, responsibility, and sacrifice. Throughout the arc, Bio Rider's abilities include heightened speed, regenerative energy, and energy blade techniques that cut through armor, challenging the hero’s defenses. The conflict escalates as alliances shift and the line between ally and foe blurs, culminating in a confrontation that tests both characters' resolve and leaves lasting impact on the series' ongoing struggle for justice and survival.