Ichiro Fudamari is a supporting character in the narrative of Kamen Rider Amazons: The Last Judgement, having previously appeared in the second season of the television series. He is a civil servant who was dispatched by the government to work for the Competitive Creatures Control Center, the organization known as 4C that is tasked with hunting and exterminating Amazon creatures. Unlike many of his colleagues who have combat experience or backgrounds with the now-defunct Nozama Pharmaceuticals, Fudamori was placed within the organization to maintain a government presence and is entirely non-combative.

In terms of personality, Fudamori is characterized by a strong aversion to violence and fighting, which makes him an anomaly within the paramilitary structure of 4C. His lack of combat capability means his contributions are almost exclusively limited to logistical and technical support, such as monitoring internet activity and managing digital surveillance, a role he refers to as net-watching. His disposition leans towards self-preservation and a desire for a quiet, uncomplicated life. When off-duty, he is known to enjoy relaxing activities like receiving aromatherapy at a massage parlor, which contrasts sharply with the grim and bloody work of his colleagues. Despite his often cautious and seemingly selfish demeanor, he is not portrayed as malicious or villainous; rather, he is a regular person trying to survive an extraordinary and dangerous situation.

Fudamoris primary motivation throughout the story is simply to stay alive and avoid danger. He does not share the zealous drive of his superior, Takeshi Kurosaki, nor does he harbor any ideological commitment to eradicating Amazons. His role in the story is largely that of a reluctant participant and a witness. During the events prior to the film, he was forced into the position of acting director for his squad when Kurosaki manipulated him into taking command authority to mobilize their forces. This position was temporary and deeply uncomfortable for him. In the theatrical film The Last Judgement, his role remains consistent; he follows orders and participates in missions under duress, often expressing reluctance and a desire to downplay their findings to avoid further conflict.

Key relationships define his position within the narrative. He is a direct subordinate of Takeshi Kurosaki, a hardened and relentless Amazon hunter. Their dynamic is one of frustrated tolerance, with Kurosaki often dragging a reluctant Fudamori into dangerous situations, while Fudamori frequently tries to avoid extra work or risk. He also interacts with other squad members and the higher-ranking director, Yugo Tachibana. When Tachibana, in a callous act, sacrifices human lives for a strategic advantage, Fudamori displays rare and genuine anger, showing that despite his passivity, he is disturbed by the casual disposal of life.

Fudamoris development across the story is subtle but noticeable. While he begins as a purely passive figure who simply follows orders to keep his head down, he eventually shows moments of moral clarity and even dark humor. His most significant transformation is not into a fighter, but into a survivor who navigates the chaos with cunning. Notably, despite having no fighting skills and being surrounded by situations where other characters are killed, Fudamori consistently survives, a trait that Kurosaki sarcastically admires as a cockroach-like vitality. By the end of The Last Judgement, after the final conflicts have resolved and Director Tachibanas illegal activities are exposed, Fudamori is seen laughing openly when Kurosaki shoots the director. This reaction signals his relief at the downfall of a corrupt authority figure and his quiet delight in the prospect of a new leadership that he might prefer, solidifying his status as an unlikely victor who outlasts the more powerful players around him.

Regarding abilities, Ichiro Fudamori possesses no notable combat skills or physical prowess. His combat power is described as almost nil, and he does not transform into a Kamen Rider or any form of enhanced being. His skills are entirely mundane, centered on information technology and office work. His most remarkable ability, as depicted in the story, is his uncanny luck and tenacity for survival against overwhelming odds, allowing him to live through massacres and final battles that claim the lives of far more capable soldiers.