A rich man who becomes the super hero named Techno Man. He is Shadow Lady's enemy and tries to stop her from stealing.
The owner of "Line Co. Leto" who desires to turn the forest outside of Gray city into a amusement park called 'Line Land". He also the is the masked vigilante known as Techno Man who tries to stop Shadow Lady from stealing and destroying the construction equipment.
Sam Line was created by Masakazu Katsura and appeared in the 4C Illustration Shadow Lady manga in the third book. His story and apperance is heavily based off of Bob Kane's character Batman to which Masakazu is a huge fan of.