
Star Trek offers a captivating insight into the complex relationship between the Klingon Empire and the United Federation of Planets, particularly following significant events in Star Trek VI: The Undiscovered Country. Set against the backdrop of 2293, this film marked a pivotal moment of reconciliation after the catastrophic explosion of the Klingon moon Praxis, which left the Empire in dire economic straits. In a bold move, Klingon Chancellor Gorkon (portrayed by David Warner) extended an olive branch to the Federation, leading to a lasting peace that endured well into the 24th century, during the era of Star Trek: The Next Generation.
During the heightened tensions of the 23rd century Cold War—culminating in the Klingon War of 2256-2257 as depicted in Star Trek: Discovery—the Klingons resorted to drastic espionage tactics, including undergoing surgeries to disguise themselves as humans. This harrowing process, necessitated by their physiological divergence from humans, was both excruciating and fraught with honor dilemmas. Notably, at least two Klingon operatives endured this transformation for the sake of intelligence-gathering against Starfleet and the Federation. However, the practice of such invasive espionage concluded with the peace established post-Star Trek VI.
Reasons Behind Klingons Abandoning Human Disguises
Shift in Strategy Following Peace Accord


With the establishment of a cooperative relationship between the Klingons and the Federation after Star Trek VI, the strategic necessity for Klingons to undergo physical alterations for espionage effectively vanished. Instead, the Klingons transitioned into a position of alliance with the Federation and became collaborators within Starfleet. A notable example of this new dynamic is Lieutenant Worf (played by Michael Dorn), who emerged as the first Klingon officer within Starfleet, ultimately serving as the Security Chief aboard the USS Enterprise-D in Star Trek: The Next Generation.
The precise number of Klingons who entered into human espionage during the 23rd century remains uncertain, but the torturous nature of the procedure depicted in Star Trek: Discovery points to limited participation. Culturally, Klingons are characterized by their preference for honorable combat; they seek glorious battle over covert tactics. The irreversible nature of the surgical transformation further explains why such a practice would be considered dishonorable among Klingons.
Two Notable Klingon Operatives in Human Disguise
Klingon Espionage Across Generations


Among the notable Klingon spies in the Star Trek franchise is Arne Darvin (portrayed by Charlie Brill). In the iconic Star Trek: The Original Series episode “The Trouble With Tribbles,”Darvin, serving as an aide to Federation Undersecretary Nilz Baris, attempted to sabotage vital grain supplies for Sherman’s Planet. His plan was thwarted by Captain James T. Kirk and the crew of the USS Enterprise, thanks to the meddling of a Tribble that revealed his true nature.
Darvin resurfaces in the 24th century, seeking revenge on Kirk by using a Bajoran Orb of Time to travel back to the 23rd century, leading him to unsuccessfully attempt to assassinate the captain through a bomb hidden within a Tribble, facilitated by the crew of Deep Space Nine.
Additionally, Star Trek: Discovery not only illustrated the grim transformation process of Klingons assuming human forms but also featured its first case: Voq (Shazad Latif). Following a painful alteration to take on the appearance of Starfleet Lieutenant Ash Tyler, Voq infiltrated the USS Discovery. Eventually, he reunited with his ally, L’Rell (Mary Chieffo), who ascended to the position of Chancellor of the Klingon Empire. By the conclusion of Star Trek: Discovery Season 2, Ash Tyler was appointed to head Section 31, showcasing the evolving landscape of Klingon relations.
Romulan Espionage: A Deeper Threat
Commodore Oh’s Infiltration and Its Consequences


In a different vein, the Romulans have also infiltrated Starfleet, but their maneuvers led to more significant ramifications than those achieved by the Klingons. The first season of Star Trek: Picard exposes the infiltration of Starfleet by the Romulan Tal Shiar, specifically the Zhat Vash. Commodore Oh rose to prominence within Starfleet, underpinned by her covert agenda to manipulate and sabotage the Federation from within, leading to devastating events such as the catalyst for the Mars Attack of 2385, which resulted in massive casualties and the destruction of crucial fleet resources.
Unlike the Klingons, whose transformation required severe modifications, Romulans are genetically akin to Vulcans, making their infiltration much more seamless. Historical instances in the Star Trek universe reveal how adeptly Romulans have maneuvered through Starfleet ranks, exemplified through characters like Captain Kirk and Counselor Deanna Troi’s encounters with Romulans.
With Nurse Christine Chapel (Jess Bush) contributing to technology capable of altering human appearances, the implications of these transformations underscore the themes of identity politics pervasive throughout Star Trek. The legacy of Commodore Oh’s actions had repercussions that lingered for years, painting a stark picture of the effectiveness of Romulan infiltration, dwarfing the impact of Klingon operations disguised as humans.
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