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Controller
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Karlton

authoritative calculating contemptuous bureaucratic
Karlton serves as Controller in Earth's Space Security Service, a senior deputy to Guardian Mavic Chen. He enforces protocols over scientific experiments, interrogates subordinates on safety and ethics, and coordinates isolation measures during crises involving fugitives and alien arrivals. Precise and demanding, he expresses contempt for incompetence while relaying orders and probing superiors' destructive strategies. His calculating demeanor and subtle hesitations signal personal motives amid loyalty to the chain of command.
12 appearances
Space Security Service Operations

Karlton's Journey

A timeline through the narrative

12 moments
S3E12 · Devil's Planet
Forced Desperus Crash Landing

N/A (off-screen, but inferred as conflicted—loyal to Chen or to Earth?)

Karlton is not physically present, but his name is central to the dialogue. Bret identifies him as the head of Space Security, while Steven accuses him of potential collusion with …

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S3E13 · The Traitors
Chen orders lethal pursuit of Vyon and Gantry

Absent but framed as a desperate fugitive—Chen’s narrative paints him as a threat to be eradicated, stripping him of agency or humanity.

Kurt Gantry, though physically absent, is the second target of Chen’s purge, his identity tied to Vyon’s as the 'other traitor' from Kembel. Lizan’s team is preparing his identity projection, …

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S3E13 · The Traitors
Chen warns Karlton about overzealous agents

Absent but implied to be desperate—Gantry’s emotional state is inferred through Chen’s paranoia. He is likely fearful (of capture) and resolute (in his alliance with Vyon), but his precise feelings are overshadowed by Chen’s narrative of treachery.

Kurt Gantry is mentioned as the second traitor associated with Vyon, his identity projection being prepared for dissemination. Like Vyon, he is framed as a rogue agent whose capture and …

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S3E13 · The Traitors
Karlton triggers emergency countermeasures

Unseen but implied to be focused and merciless in her pursuit of the traitors.

Sara Kingdom is mentioned as the operative in command of pursuing Bret Vyon. Her ruthless efficiency and loyalty to Chen’s orders are implied, positioning her as a key enforcer in …

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S3E13 · The Traitors
Chen’s Dalek Gambit Revealed

Unseen but likely coldly focused; her efficiency and loyalty to Chen make her a formidable adversary to the Doctor’s group.

Sara Kingdom is praised by Mavic Chen for her ruthlessness and efficiency. She is in command of the Special Forces dealing with Bret Vyon and is tasked with executing Emergency …

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S3E13 · The Traitors
Kingdom Reports Fugitives Trapped

Righteously indignant at the delay but suppressing it beneath a veneer of disciplined obedience—Kingdom is a woman of action, and Chen’s interruption frustrates her, but her loyalty to him is unwavering, even in the face of what she perceives as an unnecessary pause.

Sara Kingdom strides into Chen’s office with the unshakable confidence of a predator who has already won, her striking appearance and unsmiling demeanor reinforcing her role as the SSS’s most …

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S3E13 · The Traitors
Chen delays Sara’s pursuit with hidden motives

Surface-level obedience masking a simmering impatience. Kingdom is a woman of action, and Chen's delay frustrates her instinct to pursue her targets immediately. However, her loyalty to Chen and the SSS compels her to submit, even as she internally questions the necessity of the pause.

Sara Kingdom enters Chen's office with the precision of a seasoned operative, her black cat suit emphasizing her role as an enforcer of the Special Security Service. She reports the …

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S3E13 · The Traitors
Chen manipulates Sara’s loyalty

Cautiously skeptical, with a underlying tension between his loyalty to Chen and his discomfort with the deception involved in their alliance with the Daleks.

Karlton watches Sara Kingdom depart with a critical eye, then turns to Chen with a skeptical demeanor. His dialogue challenges Chen’s transparency, questioning whether Sara was ever truly informed about …

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S3E13 · The Traitors
Chen’s Pragmatic Manipulation of Loyalty

Uneasy and conflicted, torn between his duty to Chen and his growing unease with the deception. His emotional state is one of cautious defiance, where his loyalty is being stretched thin by the realization of Chen’s true nature.

Karlton watches Sara Kingdom depart with a mix of skepticism and concern, his posture rigid but his gaze sharp. He turns to Chen, his voice laced with a challenge, questioning …

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S3E14 · Counter Plot
Froyn’s experiment yields first success

Off-screen but implied to be seething—his institutional role demands accountability, and the experiment’s outcome will likely escalate his intervention.

Karlton is also absent from this event, having left with Borker after his accusatory interrogation of Froyn. His earlier contempt—‘You’re a fool’—and demand for updates frame the scientists’ triumph as …

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S3E14 · Counter Plot
Mira Transmission Cut and Suspicion Rises

Calm and authoritative, masking any underlying concerns about the experiment’s failure or the fugitives’ fate.

Karlton, acting as Mavic Chen’s intermediary, questions the scientists about the possibility of natural beings on Mira before decisively ordering a halt to all transmissions to the planet. His authoritative …

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S3E14 · Counter Plot
Chen’s Galactic Gambit Unveiled

Cautiously uneasy, torn between loyalty to Chen’s authority and his own moral compass. His surface calm masks a growing discomfort with the scale of Chen’s ambition, though he lacks the agency to voice outright opposition.

Karlton stands at attention, his body language deferential but his voice tinged with hesitation. He confirms the Daleks’ arrival on Mira with clinical precision, then arranges Chen’s departure to Kembel …

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Affiliations

Space Security Service
leader
Interstellar Threat Investigation and Neutralization

Karlton leads the Special Security Service under Mavic Chen's direction, enforcing control and executing orders.

Galactic Security Enforcement (Space Security)
employee
Galactic Security Enforcement, Scientific Oversight, and Anti-Dalek Operations

Karlton serves as Controller in Earth's Space Security Service enforcing protocols.

Mavic Chen’s Faction
member
Galactic Security Enforcement and Factional Manipulation

Karlton acts as a loyal intermediary for Mavic Chen, executing Chen's orders without question.

Across the Seasons

How this character reads at season scale

Season 3 · planet

Karlton serves as Controller in Earth's Space Security Service, a senior deputy to Guardian Mavic Chen. He enforces protocols over scientific experiments, interrogates subordinates on safety and ethics, and coordinates isolation measures during crises involving fugitives and alien arrivals. Precise and demanding, he expresses contempt for incompetence while relaying orders and probing superiors' destructive strategies. His calculating demeanor and subtle hesitations signal personal motives amid loyalty to the chain of command.