Mantarou Gou

The main antagonist and a major antihero from Cybrog Kuro-chan manga and anime series. A mad scientist who wishes world domination by creating cyborg cats as weapons of mass destruction.

His plan completely backfired when Kuro took away the control chip and through sheer willpower of his own. He later stops from his plans in world domination and decides to live in a more peaceful way of living with Mi and later Kotaro. Although Kuro and his relationship is turbulent and hostile at times, Kuro does respects him as an inventor.

(Source: Legends of the Multi Universe Wiki)