Becker is a police officer working at the German branch of Europol, the international law enforcement agency. He serves as a subordinate to Director Schilling, and like his superior, he is one of the very few people who knows about a past incident involving the robot detective Gesicht and Adolf's brother. This knowledge of a hidden event shapes his interactions with Gesicht, toward whom he maintains a consistently cold and distant attitude.

When the roboticist Dr. Hoffman is kidnapped by an assassin robot, Becker makes a critical and controversial decision. Concluding that the situation would be resolved if the robot was stopped, he orders his subordinates to open fire with the intent to destroy the machine, even if it means killing Dr. Hoffman in the process. This action demonstrates a pragmatic, ends-justify-the-means approach to his duties, prioritizing the neutralization of a threat over the life of a hostage. His professional conduct is also marked by a degree of antagonism towards Gesicht. During an argument, his hostility nearly causes him to reveal details of the detective's secret past in front of other officers, suggesting a willingness to use that knowledge as a weapon.

Throughout the narrative, Becker’s role is tied to the bureaucratic and human elements of the police force, often representing a perspective that is suspicious of or unsympathetic to robots. His primary relationships are with his superior, Director Schilling, and with Gesicht, whom he distrusts. While not a central character who undergoes significant personal transformation, his presence serves to highlight the prejudice and hidden political machinations that the protagonist must navigate. His notable ability lies not in physical combat, but in his institutional authority and his access to sensitive information, which he uses to exert pressure on others.