Ru Shako emerged from abandoned Central Asian military experiments in regions including Bangladesh and Cambodia, designed to enhance Armored Trooper piloting. These experiments mirrored those creating Chirico Cuvie. Cast into wilderness survival, he honed his combat skills against jungle threats. His physical adaptations to harsh terrains extended to his Armored Trooper, modified for operations in swamps and elevated terrain despite its weight.

Tall and muscular with dark skin, light gray hair, a wide chin, and a large nose, he typically wears a black military uniform reflecting his origins. Survival forged a personality of stoicism and tactical intelligence. Like Chirico, he exhibits emotional detachment stemming from traumatic experimentation, compensated by acute strategic awareness allowing him to anticipate and counter enemy movements effectively.

Following the super-soldier program's termination, his journey led to China where the Alliance recovered him, facilitating his long-desired meeting with Chirico Cuvie and establishing their foundational alliance. In the *Big Battle* OVA, he operates alongside Chirico and companions in the Melkian desert city of Aa Koba, assisting in locating critical jijirium. His resourcefulness proves vital during underground explorations and combat against adversaries like Balarant Union forces.

During the climactic conflict against the experimental Perfect Soldier Radaa Niva, Ru Shako pilots a modified Armored Trooper mimicking the Quentian Berserga. He delivers tactical support by attacking a Balarant land battleship's treads and creating entry points for Chirico's assaults. His actions include breaching the ship's hull to aid rescue operations and executing coordinated strikes, cementing his role as a reliable combat ally.

His narrative trajectory underscores survival, adaptability, and integration into Chirico's team, reflecting their shared legacy of super-soldier experimentation and resilience against militaristic conspiracies.