Yatta-Jinbee is a whale shark-themed mecha and carrier unit, transporting and deploying robotic allies like the Yatter-King and Yatter-Phant. Its distinct aquatic design reflects its namesake creature.

This mecha debuts in the Hawaii storyline, ferrying protagonists in pursuit of a Dokuro Ring. It resurfaces during the wedding veil incident in the Strait of Doban. There, Yatta-Jinbee reveals a critical vulnerability: susceptibility to hypnotic suggestion. An antagonist's trance-inducing ability incapacitates it, affecting all Yatter-Mechas carried within at that moment.

Despite this weakness, Yatta-Jinbee serves its pivotal carrier role. It houses the specialized combat mecha Yatter-Dragon, which emerges from its hold to engage enemies during the wedding confrontation following Yatta-Jinbee's disablement.