Man in Black 1, also designated as Kurofuku-Ichi, is a character from the 2011 live-action film Gantz: Perfect Answer, the sequel to the first Gantz film. He is portrayed by actor Go Ayano. Man in Black 1 belongs to a group of similarly numbered antagonists referred to as the Men in Black, which include Man in Black 2, Man in Black 4, Man in Black 5, and Man in Black 6. These characters are aliens capable of assuming human form, blending in with ordinary people while pursuing objectives tied to the ongoing conflict with the Gantz sphere and its human players. Man in Black 1 stands out as the most prominent and formidable among them, often described as the most terrible enemy the Gantz participants face in the film. His background is rooted in the larger extraterrestrial struggle against the Gantz system, though the specific origins of his kind or his personal history are not elaborated upon within the story. In terms of personality, Man in Black 1 is cold, calculating, and resolute in his mission. He displays little emotion or hesitation, acting with a focused intensity that makes him a relentless opponent. His motivations are directly tied to the alien agenda of confronting and eliminating the Gantz players, particularly Kei Kurono, who has become a skilled and determined warrior. Man in Black 1 does not appear to have personal grievances; rather, he functions as an instrument of a larger alien force seeking to settle scores with Gantz and its operatives. His role in the story is that of a primary antagonist who drives much of the action in the latter half of the film. He leads the other Men in Black in a series of attacks on the human characters, culminating in a lengthy and intense battle sequence set aboard a crowded subway train. During this confrontation, Man in Black 1 engages directly with Kei Kurono and other Gantz members, showcasing his combat abilities and his willingness to harm innocents to achieve his goals. His key relationships are primarily adversarial: he is an enemy of Kei Kurono, Masaru Kato, and the rest of the Gantz team. He also operates alongside his fellow Men in Black as part of a coordinated alien unit. There is no indication of alliances or connections with human characters outside of direct conflict. In terms of development, Man in Black 1 remains a consistent antagonist throughout the film, with no significant arc or change in his objectives or demeanor. He is introduced as a threat and remains one until the story's resolution. His presence serves to escalate the stakes and test the growth of the protagonist, Kei Kurono, who has become more capable and determined since the events of the first film. Notable abilities of Man in Black 1 include shape-shifting, allowing him to alter his appearance to blend in with humans or take on a more alien combat form. He possesses superhuman strength, speed, and durability, enabling him to fight on equal footing with Gantz players who wear the enhanced black suits. He is also proficient with weaponry, including bladed weapons such as swords or similar armaments used during the subway battle. His combat style is aggressive and efficient, reflecting his role as a high-priority threat. Overall, Man in Black 1 functions as a key antagonist in Gantz: Perfect Answer, representing the alien opposition that the human characters must overcome to survive.