The figure presents Kamen Rider Onyx in a compact, dynamic stance that showcases the iconic armored suit from Kamen Rider Dragon Knight. The head features a sculpted helmet with a prominent red visor and metallic black surfaces accented by subtle gold trim and silver seams. The body is densely layered with angular armor plates that replicate Onyx's combat-ready silhouette, while the joints are discreetly integrated for seamless posing. The finish combines a glossy black base with matte accents and translucent red eyes, and includes interchangeable hands and a belt accessory to recreate signature action poses.

Onyx is a gatekeeper figure who binds the power of a dragon shard to his rider suit, seeking balance between dark energies and human resolve. In the Dragon Knight storyline, Onyx emerges as both rival and ally, testing the hero's courage with missions that blur the line between duty and temptation. He wields a disciplined, strategic fighting style and uses the dragon shard to unleash focused bursts of energy during critical battles. Through successive confrontations, Onyx learns to trust teammates, making tough sacrifices to protect innocents and preserve the realm from encroaching shadows.