Richard Onslow Roper is the novel’s primary antagonist, who serves as the personification of amoral, globalized capitalism. Publicly a charming and sophisticated international entrepreneur, he is consistently dubbed “the worst man in the world” (30) by his enemies. They do not want themselves to forget that, in spite of his charming persona, Roper is a ruthless arms dealer who profits from chaos and suffering. Roper is a master of appearances, moving effortlessly through the highest echelons of society while managing a criminal empire built on violence and corruption. His aristocratic English mannerisms, from his Belgravia accent to his casual style of command, function as a veneer of legitimacy that masks the brutal nature of his business. He possesses a supreme confidence, viewing the world as a jungle where moral codes are for the weak and survival belongs to the predator. His philosophy is one of unapologetic self-interest, believing that generating wealth, no matter the human cost, is its own justification. As the characters repeat their belief that Roper is the worst man in the world, Roper repeats this mantra to himself as a means of justifying all of his actions.

Roper’s character is central to the theme of Capitalism as Legitimized Plunder. He operates through a sophisticated network of offshore companies, nominee directors, and legal cutouts like Major Corkoran. In this way, he ensures that his own name never appears on any incriminating document. This structure allows him to maintain a pristine public image while engaging in vast criminal enterprises, from laundering money to trading weapons for cocaine. His luxury yacht, the Iron Pasha, is a key symbol of his power: a sovereign, mobile territory that exists beyond the reach of national laws and accountability. He treats war and death as commodities, referring to weapons as “toys” (103) and viewing international conflicts as market opportunities. This cynical detachment highlights his deep amorality; he is not driven by ideology or malice, but by the pure, abstract pursuit of profit and power, seeing no distinction between selling tractors and selling nerve gas. He wields the mechanisms and institutions of capitalism to plunder the world, mocking the supposedly legitimate institutions of statecraft and justice by using their own tools to enrich himself through illegal activity.

Despite his monstrosity, Roper is a complex figure. He demonstrates a genuine, if possessive, affection for his son, Daniel, and a complicated attachment to his mistress, Jed. He sees them both as his “virtue” (261), symbols of the idyllic life his criminal activities afford him. This suggests a need for a moral justification, however self-serving, for his actions, yet they are notably exterior to himself, abstractions which he keeps around himself until such time as he actually needs to do business. When needs must, he can send his virtues away. He is also a keen judge of character, recognizing in Jonathan Pine a fellow “survivor” and a man with “no neutral gear” (294). This recognition leads him to try to co-opt Jonathan, seeing in him a potential successor or dark protégé. Roper’s inability to comprehend Jonathan’s moral motivations is his ultimate blind spot; he assumes everyone, at their core, is as transactional and cynical as he is, a misjudgment that proves to be his undoing. Fortunately for Roper, however, this same emotional attachment allows him to escape, as Burr agrees to allow Roper to go free in exchange for Jonathan and Jed. Roper, recognizes the benefits of this offer, puts aside his emotional investment in Jonathan and Jed. He buys his freedom by exchanging them, thus escaping justice. That Roper is seemingly allowed to go free is a comment on the enduring nature of illegal, immoral activities, suggesting that they endure beyond the efforts of any single individual.

Leonard Burr serves as Jonathan Pine’s mentor and the primary driver of the official investigation into Richard Roper. As the head of a small, underfunded enforcement agency, Burr is an outsider in the British intelligence establishment. He is a passionate and rumpled “common Yorkshire” (80) man, in contrast to the rich southerners who populate the government institutions. His idealism clashes with the cynical realpolitik of Whitehall, whose culture clashes so distinctly with his own background. His slovenly appearance and blunt manner conceal a sharp, obsessive mind and an unyielding moral conviction. He views the fight against Roper as a personal crusade, appointing the arms dealer as his “personal Antichrist” (64) and the embodiment of a corrupt, privileged class he despises (but which, ironically, he also must work alongside). Burr is motivated by a powerful, almost puritanical sense of justice and a desire to hold the powerful accountable, making him a foil to the institutional apathy and complicity that protect Roper.

As Jonathan’s handler, Burr travails show the problems of navigating a justice system that is flawed but still functional. He recognizes Jonathan’s potential, seeing him as an instrument uniquely suited to penetrate Roper’s world. He manipulates  Jonathan, appealing to his grief over Sophie and his dormant sense of duty, yet he also displays a genuine, almost paternal concern for his agent’s well-being. In this respect, his recruitment of Jonathan mirrors Roper’s own attempts to recruits Jonathan, yet Burr distinguishes himself by at least recognizing the moral complication of his actions. Burr’s conflict throughout the novel is not so much with his own conscience. Instead, he finds himself constantly fighting against the institutional barriers erected by his rivals in “Pure Intelligence,” particularly Geoffrey Darker’s faction at the River House. His struggle to keep the Limpet operation alive against bureaucratic sabotage and political interference highlights the novel’s critique of a system that often works to protect the very criminals it is supposed to prosecute. At the end of the novel, Burr shows his humanity by recognizing the impossibility of bringing down Roper in the moment. He trades his professional ambition for the lives of Jonathan and Jed, showing his humanity through his desire to bring his agent back home.

Jemima “Jed” Marshall evolves from Roper’s beautiful accessory into a key player in his near downfall. Initially dismissed by many as an “upper-class geisha” (84), she is Roper’s mistress and the chatelaine of his island fortress, Crystal. Her public persona is a performance of witty, carefree worldliness, a role she plays with practiced skill. She is defined by her physical presence—her “long-waisted, funny-faced, unpardonably attractive” (30) appearance and her distinctive, feral laugh. This facade, however, conceals a growing unease with her gilded cage and a moral compass that has been suppressed rather than extinguished. Jonathan recognizes the performative nature of her actions and encourages her to show her true self. Her convent-school upbringing and the memory of her honorable but financially ruined father provide a foundation for the guilt and doubt that begin to surface. With Jonathan’s help, Jed gradually sheds the mask that has protected her from Roper’s world for so long.

Jed’s transformation is catalyzed by two relationships. Her friendship with the unhappy Caroline Langbourne exposes her to the brutal realities of the world Roper and his associates inhabit, forcing her to confront the fact that she is a “gangster’s moll” (356). Caroline serves as a glimpse into Jed’s future and invites her to ask whether this is the life that she wants to live. More significantly, her intense, unspoken connection with Jonathan awakens her dormant conscience. She is drawn to his mysterious integrity and recognizes in him a kindred spirit, another outsider performing a role. Jonathan’s presence forces her to question her own complicity, leading her to secretly investigate Roper’s business and eventually to act against him. Her decision to help  Jonathan represents her reclamation of her own agency. She sheds the role of Roper’s “virtue” (357) and chooses a dangerous, uncertain path toward her own version of authenticity.

Major Lance Corkoran, or “Corky,” is Roper’s cynical and debauched factotum, a round and static character who is a dark foil to Jonathan Pine. A disgraced ex-army officer, Corkoran serves as Roper’s gofer, social arranger, and, most importantly, the man who signs his name to all of Roper’s illicit deals. He is the legal cutout who puts his name to Roper’s criminal enterprises, accepting immense wealth in exchange for total legal culpability. Corkoran’s personality is a blend of camp wit, boozy self-loathing, and sharp intelligence. He presents himself as a “savage little poof in a grownup world” (261), using humor and affectation as a shield. Despite his outward subservience and degeneracy, Corkoran is deeply perceptive, recognizing Jonathan as “poison” (361) from the outset and understanding the precarious nature of his own position in Roper’s court. He is justified in his suspicion of Jonathan, even if his past actions and unreliability mean that Roper is unwilling to listen to him. His resentment toward Jonathan stems less from professional jealousy than from a recognition that Jonathan shows a moral path that Corkoran long ago abandoned. In Jonathan, he sees a version of himself that he long ago drowned in alcohol. In this way, Corky is a man who has made a permanent and irreversible trade of his soul for comfort.

Rex Goodhew is the idealistic Whitehall mandarin who champions Leonard Burr’s agency and the investigation into Richard Roper. Goodhew initially appears to be a master of the bureaucratic game, using his influence and intelligence to protect the Limpet operation from its enemies within the government. He is a “high-minded Anglican of reforming zeal” (61) who believes that the end of the Cold War demands a new, more accountable era for the intelligence services. His crusade to dismantle the corrupt old-boy networks, particularly Geoffrey Darker’s Procurement Studies Group, is both principled and politically risky. 

Goodhew’s idealism, however, proves to be his undoing. He tragically overestimates his own influence and underestimates the ruthlessness and deep-seated power of his opponents. After being threatened, bribed, and systematically outmaneuvered by Darker’s faction, he is politically neutralized and stripped of his authority, a stark illustration of the novel’s theme of Institutional Corruption Preserves Evil. Goodhew, a man who has invested his life in the legitimacy and importance of government institutions, is forced to confront a reality in which these same institutions are corrupt and dangerous. His power is stripped away from him through promotion, leaving him with a meaningless title and—more tragically—the terrible realization that he has invested so much of himself in a lie.

Sophie Amsler is the catalyst for the novel’s plot. The sophisticated and world-weary mistress of Egyptian gangster Freddie Hamid, Sophie possesses a fierce, if tragically timed, moral conscience. When she discovers that Hamid is partnering with Richard Roper in a massive arms deal, she makes the fateful decision to leak the documents to the British Embassy via Jonathan Pine. As well as an act of conscience, her decision to share the documents with Jonathan is a hint of Sophie trying to reclaim her agency. After years of being seen as little more than Hamid’s mistress, she seeks to demonstrate that she can influence the world in her own right.

Tragically for Sophie, this act of conscience directly leads to her being brutally beaten and murdered. She becomes another victim of the global arms trade that Roper represents, though her named status and presence in the novel helps to humanize this violence and show that it is not limited to battlefields. Though her physical presence in the novel is brief, she becomes a powerful, haunting memory for Jonathan. Throughout his mission, he invokes her as a source of strength and a moral compass, his quest for revenge becoming a way to atone for his failure to save her and his guilt for the role he played in her death. She represents the human cost of Roper’s business and the moral imperative that drives Jonathan’s actions.

Geoffrey Darker is the head of the Procurement Studies Group at the River House and the primary force of institutional opposition to Burr’s investigation. Darker embodies the cynical, self-serving, and unaccountable nature of the established intelligence services. He and his faction, the Mariners, operate as a state within a state, protecting their own interests and those of their powerful allies, including criminals like Roper. Darker’s motivations are a mixture of bureaucratic territorialism and a deeper, more sinister complicity in the very crimes Burr is trying to expose. He systematically works to sabotage the Limpet operation, withholding intelligence, spreading disinformation, and ultimately orchestrating the political destruction of Rex Goodhew. Darker represents the true enemy Burr and Jonathan are fighting: not just a single criminal, but a corrupt system that enables and protects him.

Mark Ogilvey is a British diplomat in Cairo and Jonathan Pine’s sailing companion. He represents the first layer of institutional betrayal. When Jonathan entrusts him with Sophie’s documents, Ogilvey’s primary concern is not justice or the protection of his source, but the neat, bureaucratic handling of an intelligence problem. After Sophie’s murder, his response is a glib and dismissive attempt to absolve himself and his service of any responsibility. He is a pompous functionary who prioritizes the tidiness of the system over human life, hinting at the wider institutional corruption that Jonathan will later encounter.

Rob Rooke is Leonard Burr’s second-in-command. He is a flat, static character who also serves as a pragmatic and stabilizing force. A retired army officer, Rooke is methodical, cautious, and loyal. He provides a grounded counterpoint to Burr’s impassioned, sometimes reckless idealism, often acting as a restraining hand and a source of practical military knowledge. While he shares Burr’s objective, his approach is that of a professional soldier rather than a moral crusader. He is the steady, reliable anchor of the Limpet team.