Dr. Gaia

Dr. Gaia is a Black Ghost scientist, appearing in the Mythos arc of the manga. He developed the Mythos Cyborgs with Dr. Uranus as the Greek cyborg cell for Black Ghost. In the arc, he intends to use his team to punish the "Black Ghost traitors" (the 00 cyborg team and Dr. Gilmore).

(Source: Cyborg 009 Wiki)