However , a prototype gillman leads Dai to their base of operations before being killed off .
It was created to capture women on Namegawa Island to be scientifically altered into Marinian - like beings to serve Fuuma , capturing Dr. Koshirou and Yoko as a result .
A prototype gillman leads Dai to their base of operations before being killed off .
It was created to capture women on Namegawa Island to be scientifically altered into Marinian - like beings to serve Fuuma , capturing Dr. Koshirou and Yoko as a result .