Himika is a major antagonist in Koutetsu Jeeg, serving as a powerful and mysterious priestess-like figure aligned with the invaders seeking to conquer Japan. She is cunning, ruthless, and highly devoted to her mission, often acting as a key strategist and enforcer for the enemy forces. Her presence adds a supernatural and ancient-mythology flavor to the series, and she frequently clashes with the hero, Hiroshi Shiba, as part of the central conflict driving the story.