Twelve, also known as Touji Hisami, is one of the main protagonists in the anime series 'Zankyou no Terror'. As a brilliant and enigmatic teenager, he forms one half of the duo known as 'Sphinx', alongside his partner Nine. Twelve is characterized by his cheerful demeanor and high intelligence. He specializes in mechanical and electronic skills, which are crucial in executing their plans. Despite his lighthearted personality, Twelve harbors a deep-seated trauma from his past, which influences his actions throughout the series. His role is pivotal as he navigates the complexities of their mission and relationship with other characters.