The Eternal Doctor
Full Name:
The Eternal Doctor
Incarnation Number:
Twelfth Doctor [First Cycle]
Age:
Occupation:
Over 900 Years Old
Wanderer of the Stars, Defender of the Universe, Time's Reckoner
"You will detain Jorak. You will make sure he never sees the light of day again. No escape. Earth doesn’t deserve to suffer because of his mistakes—and neither does any other world. No second chances. I won't allow this to happen again—not to Earth, not to anyone." - The Eternal Doctor
Personality Traits:
Calculating, Witty, Pragmatic, Vulnerable, Charismatic, Fearless, Introspective, Blunt, Resourceful, Protective, Intense, Curious, Independent and Resolute
Portrayed By:
Aiden Caufield
Overview
The Eternal Doctor is the original Twelfth incarnation of the Doctor, when accounting for the War Doctor, portrayed by Aiden Caufield. As the second-to-last incarnation in the First Regeneration Cycle, the Eternal Doctor’s existence was erased from history after the Twenty-Sixth incarnation underwent a mind wipe and was compelled to regenerate back into the Tenth Doctor, portrayed by David Tennant.
This incarnation ultimately became a key figure in the battle against the Dread Master, the Daleks, and even Omega. The Eternal Doctor also sided with the Tenth and Thirteenth Doctors on occasion. Despite their significant contributions, the Eternal Doctor was ultimately forgotten, their legacy obscured by the events that followed.
Personality
The Eternal Doctor is a study in contrasts. At their core, they are deeply compassionate, but this kindness is buried beneath layers of snark, pragmatism, and a no-nonsense attitude. They view the universe as an unkind place, one where survival often demands difficult choices, and they refuse to sugarcoat reality. However, their cold exterior occasionally cracks, revealing moments of deep vulnerability and yearning for connection.
They have a sharp, often biting wit, and aren’t afraid to speak blunt truths. While they can be charming when they choose, it’s often a means to an end, employed to win allies or outwit enemies. This incarnation is unafraid to embrace their darker side, channelling their fury and regret into action. Yet, despite their hardened demeanour, they are still deeply affected by the suffering of others, a fact they try to conceal.
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Beneath their outward toughness lies a flicker of hope, a yearning to rediscover the wonder of the cosmos and the beauty of life. They value companionship but struggle to let others in, fearing the pain of loss that inevitably comes with it.
Appearance
The Eternal Doctor has a sleek and composed appearance, dressed in a dark olive-green long coat with dull brass buttons that add a touch of understated elegance. Underneath the coat, they wear a matching dark olive-green collared shirt paired with a dark teal tie, presenting a refined yet approachable look.
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Their hair is light brown and styled in a medium-length, slightly tousled cut, longer on top and shorter on the sides, giving them a modern yet timeless quality. Rectangular, dark-framed glasses sit on their face, adding an intellectual air and a hint of mystery.
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Their facial features include a straight nose, a neutral or serious expression, and light-colored eyes that reflect their intense and calculating nature. Their mouth is set in a straight line, often betraying little emotion unless in moments of sharp wit or righteous fury.
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They have a slender build, and their posture is poised and composed, often standing with their arms crossed over their chest in a gesture that conveys quiet confidence or subtle defiance. This clean, polished appearance reflects the balance between the Eternal Doctor’s sharp intellect and their no-nonsense approach to the challenges of the universe.
Approach to Problems
The Eternal Doctor values efficiency and logic above all else, often cutting through emotional or moral dilemmas with a pragmatic, sometimes cold approach. They are a master strategist, able to calculate several moves ahead of their adversaries, and they are not above using deception or manipulation if it means achieving the greater good.
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While they typically seek non-violent solutions, they are unafraid to use force or bend the rules of time and space when absolutely necessary. Their confidence in their intellect and experience often leads them to make decisions unilaterally, though they remain open to input from those they trust.
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Despite their darker tendencies, the Eternal Doctor’s actions are always guided by their deeply rooted moral code—one that values life, justice, and the preservation of balance in the universe.
Strengths
Sharp Intellect: The Eternal Doctor’s ability to quickly analyse situations and devise creative solutions makes them a formidable force.
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Unyielding Determination: They possess a relentless drive to protect the innocent and set things right, even at great personal cost.
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Charismatic Presence: When needed, they can inspire trust and loyalty, using their charm to rally allies.
Master Strategist: Their keen understanding of people and events allows them to outmanoeuvre enemies with ease.
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Resilient Spirit: Despite their darker nature, the Eternal Doctor remains a beacon of hope, unwilling to give up on the universe.
Weaknesses
Emotional Walls: Their reluctance to let others in leaves them isolated and vulnerable to loneliness.
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Bluntness: Their sharp tongue and unfiltered honesty can alienate even those closest to them.
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Dark Impulses: Their pragmatic approach sometimes leads them to make morally questionable decisions, which they struggle to reconcile.
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Regret: They are haunted by the weight of their past mistakes, which can cloud their judgment.
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Overconfidence: Their belief in their own abilities occasionally causes them to underestimate opponents or overlook key details.
Notable Achievments
Saviour of the Broken Realms: The Eternal Doctor restored stability to a crumbling dimension on the verge of collapse, sacrificing much of their own energy to save countless lives.
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Defender of the Fractured Multiverse: The Eternal Doctor thwarted a Dalek invasion triggered by the Dread Master’s Dimensional Tears, restoring balance and preventing reality from collapsing into chaos.
Vanquisher of the Harrowed: The Eternal Doctor thwarted the Harrowed’s dark crusade, halting their advance and delaying the prophesied Harrowing, though its ultimate arrival remains uncertain.
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Failed Oliver Howell: Despite all their victories, the Eternal Doctor could not save Oliver from Omega, who drained his life force. Only after his death did the Doctor truly realize that Oliver had been more than just a companion—he had been a friend. This failure haunted the Doctor, serving as a painful reminder that even they could not always protect those who mattered most.
Relationships
Companions: While the Eternal Doctor initially keeps their companions at arm’s length, their shared experiences forge deep, unshakable bonds. They often see their companions as a reminder of the universe’s beauty and goodness.
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Oliver Howell: As the Eternal Doctor’s first companion, Oliver began his journey at a distance, met with the Doctor’s guarded nature. Over time, their shared adventures forged a tentative friendship, though the Doctor’s trust remained fragile. When Oliver’s secret journal—documenting their travels—was discovered, the Doctor’s disappointment turned to cold detachment, creating a rift between them. It was only in Oliver’s final moments, as Omega stole his life force, that the Doctor realized the truth—Oliver had been a true friend all along. But that realization came too late. The Doctor did not fail the universe this time; they failed Oliver. And that is a loss they may never forgive themselves for.
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Sophie Evans: Oliver’s partner and one of the few people the Eternal Doctor allowed into their guarded world. Despite the weight of their shared grief, Sophie and the Doctor formed an unlikely but steadfast friendship. Yet, the Doctor withheld the truth about Oliver’s fate, carrying the burden alone until the moment came when they could no longer keep it from her. Though devastated, Sophie eventually forgave the Doctor—but she never forgot. The scars of that loss remained, shaping their bond even as time moved on. When the Eternal Doctor fell and was reborn, Sophie finally admitted that, despite everything, she had truly cared for them. But by then, it was already too late.
The TARDIS: Their relationship with the TARDIS is more symbiotic than ever, with the ship often acting as a stabilizing force for the Doctor’s darker tendencies.
Adversaries: The Eternal Doctor approaches enemies with a mix of curiosity and caution, always seeking to understand their motivations. However, they have little patience for those who exploit or harm others, and their fury can be a fearsome thing to behold.
Timeline
Date: 2020
(Full Date Unknown)
Date: 300,001
(Full Date Unknown)
Date: 625AD
(Full Date Unknown)
Date: 04/09/1938
Date: 2020
(24 Hours after they initially left)
Date: 2020
(Full Date Unknown)
Date: 6057
(Full Date Unknown)
Date: 6057
(Full Date Unknown)
The Eternal Doctor’s first adventure in his new form throws him into chaos before he fully understands himself. In the quiet English village of Moorfield, intergalactic soldiers, the Penticle Guard, arrive to capture a fugitive alien, Jorak, turning the town into a warzone. As the Doctor investigates, his reluctant companion, Oliver Howell, falls under mind control, becoming an unwilling pawn in Jorak’s desperate bid for freedom.
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In a tense hospital standoff, the Doctor outwits Jorak and frees Oliver, but the alien’s tragic past leaves him questioning his own morality. As the dust settles and Jorak is taken by the Penticle Guard, Oliver, shaken but inspired, chooses to travel with the Doctor. Still uncertain of himself, the Doctor embraces the journey ahead, knowing that each adventure will shape who he is meant to be.
The Eternal Doctor takes Oliver to the far future, the year 300,001, where humanity thrives but faces new dangers. In this distant era, they encounter The Dreadwalker, a spectral entity phasing in and out of reality. The Doctor quickly deduces that the creature is displaced in time, a remnant of another era pulled into the future by an unknown force. Though not inherently malevolent, its presence destabilizes the environment, forcing the Doctor to act. Oliver, eager to prove himself, bravely aids in the effort despite his fear.
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As the Doctor investigates, traces of a mysterious energy lead to an unsettling discovery—Dimensional Tears, something he once believed to be impossible. Though he dismisses it as mere coincidence for now, a larger mystery looms. Meanwhile, Oliver secretly documents their adventure, captivated by the resilience of future humanity and the Doctor’s compassion. Yet, the burden of secrecy begins to weigh on him.
As the adventure concludes, the Doctor restores The Dreadwalker to its rightful place in time, but questions remain. The presence of Dimensional Tears lingers in his mind, hinting that something far greater is at play—something that neither he nor Oliver are prepared to face just yet.
The Eternal Doctor takes Oliver to 625 AD, deep in the Anglo-Saxon period, where danger and unrest loom. There, they encounter The Harrowed, a group disguised as knights who spread fear with whispers of an apocalyptic event known as The Harrowing. Unlike past foes, these enigmatic figures thrive on chaos, forcing the Doctor and Oliver to strategize carefully to stop them. The Doctor is deeply unsettled by The Harrowed, as their cryptic warnings seem eerily tied to the growing dimensional instability. Their actions hint at a greater conspiracy, one that could unravel time itself. Though the Doctor cannot yet see the full picture, a pattern is beginning to emerge.
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Meanwhile, Oliver proves his worth once more, stepping in to protect a vulnerable village, though the weight of leaving people behind begins to take its toll on him. As the adventure ends, he starts to see through the Doctor’s unshakable façade. Beneath the confidence lies a growing unease—one the Doctor tries to conceal but cannot ignore. The mystery of The Harrowing lingers, a sign that something far greater is at play, waiting in the shadows.
The Eternal Doctor and the Thirteenth Doctor find themselves thrust into a dangerous conflict with the Order of Obsidian, a fanatical cult that sees the Doctor not as an enemy, but as a vessel of forbidden knowledge. Their rituals twist time and space, their relentless pursuit of hidden truths pushing the boundaries of reality itself. Though neither Doctor fully understands the true nature of the Order’s mission, they are forced to set aside their confusion and work together to protect those caught in the crossfire.
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As the battle unfolds, the Eternal Doctor grows increasingly suspicious—about 40% certain—that a familiar, shadowy presence may be orchestrating events from the background. Yet, the pieces refuse to align, and the mystery only deepens. When the Thirteenth Doctor’s TARDIS unexpectedly reappears, only to vanish once more, the Eternal Doctor is left with more questions than answers. The Order’s Master remains hidden, their ultimate goal obscured, and the fabric of time hangs in the balance. The chaos is only beginning.
The Eternal Doctor brings Oliver home to 2020 for a brief respite, but their peace is shattered when a Dimensional Tear rips open the sky, unleashing a Dalek invasion. At last, The Dread Master emerges from the shadows, revealing their plan to rewrite reality itself. The Doctor is shaken—their last encounter ended with the Master saving them from Rassilon, but now, they stand as an architect of chaos. With The Daleks enforcing their will, the Doctor fights to contain the disaster, knowing they are already steps behind.
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Amid the battle, the Doctor discovers Oliver’s secret writings, sparking a heated confrontation. Feeling betrayed, the Doctor lashes out, while Oliver defends his actions, revealing his deep admiration and desire to share the Doctor’s story. Their bond fractures, but there’s no time to mend it. As the war rages on, The Dishonoured Doctor appears with a dire warning—the Eternal Doctor must make a choice, or the consequences will be catastrophic. Now, the Doctor is left questioning whether they have the strength to do what must be done.
The Multiverse is collapsing as timelines fracture and merge, the aftermath of the Master’s grand design spiraling into chaos. The Dimensional Tears have destabilized reality itself, threatening to unravel time and space. As the Eternal Doctor fights to restore order, the Daleks remain an ever-present danger, forcing both them and Oliver to battle for survival at every turn. With each passing moment, the stakes grow higher, and the Doctor knows that hesitation could mean the end of everything.
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Amid the turmoil, the Dishonoured Doctor returns one final time, offering their aid and critical insight into the nature of the Dimensional Tears. Though wary, the Eternal Doctor joins forces with their fallen counterpart, and together, they devise a way to seal the tears once and for all. But the solution comes at a cost—one the Doctor struggles to accept. The Master, reveling in the chaos, taunts them, insisting that their compassion will be their undoing. As the battle rages, Oliver proves his courage by outmaneuvering the Daleks and saving countless lives, rekindling the Doctor’s faith in him.
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In a climactic confrontation, the Doctor and Oliver face the Master, sealing the Dimensional Tears and forcing the Daleks into retreat. Though the Master is ultimately defeated, they escape, leaving the Doctor with lingering doubts about whether they can ever truly stop them. As the dust settles, the Doctor reflects on the sacrifices made and the unexpected strength they have drawn from Oliver’s unwavering resolve. The multiverse is saved, but the Doctor is left with a haunting question: when the time for true sacrifice comes, will they be ready to face it?
Before returning to Earth, the Eternal Doctor and Oliver take a much-needed break on Elysia Prime, a paradise world of serene beaches, bioluminescent forests, and gravity-defying waterfalls. While Oliver relaxes, the Doctor gets into a heated argument with a futuristic vending machine over whether a banana smoothie qualifies as a "complex order." The machine, obsessed with efficiency, refuses to comply without exact calorie specifications, leading to a forty-minute standoff. Frustrated, the Doctor eventually reprograms the machine, while Oliver, unfazed, simply orders tea.
The Eternal Doctor and Oliver return to Earth in 2021 after what was supposed to be a peaceful retreat on Elysia Prime—a paradise world of floating waterfalls and endless tranquillity. However, upon returning to Earth, their plans for actual rest are cut short when Sophie Evans, Oliver’s journalist girlfriend, pulls them into a growing mystery.
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The Threxil, an alien race that arrived just days earlier, have been welcomed as peaceful refugees, offering miraculous technology and medical breakthroughs. While the public and global governments have embraced them, Sophie remains skeptical, noticing troubling patterns of disappearances near Threxil settlements. Determined to uncover the truth, she enlists the Doctor’s help—despite Oliver’s reluctance to assume the worst.
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Attending a public address by Zerax, the Threxil’s charismatic ambassador, the Doctor is met with charm and deflection. Though Zerax effortlessly evades their pointed questions, the Doctor picks up on subtle inconsistencies in his carefully crafted narrative. Meanwhile, Sophie uncovers encrypted files hidden within the Threxil’s database, revealing a sinister truth: the Threxil are abducting humans as test subjects for a secret terraforming project. The Doctor’s investigation confirms their worst fears—the Threxil’s refugee story is a lie. Earth is not their sanctuary; it is their next conquest.
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With the truth in hand, the group rushes to expose the Threxil before their plans come to fruition. But the Threxil move swiftly, using mind-control technology to silence dissent and turn public opinion against the Doctor and Sophie. As the aliens tighten their grip, the Doctor formulates a daring plan to disrupt their terraforming devices, buying time to rally humanity against the invasion. In a desperate showdown, the Doctor, Oliver, and Sophie sabotage the Threxil’s technology, forcing them to retreat—though not without a warning that they will return.
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With the immediate threat averted, Sophie faces the consequences of her investigation. The government scrambles to cover up the truth, leaving her career in jeopardy. Yet, her resolve remains unshaken. Recognizing her courage and keen instincts, the Doctor offers her a place aboard the TARDIS. After a moment of hesitation, Sophie steps inside, wonder in her eyes as the ship dematerializes—taking the trio toward their next adventure.
Conclusions
The Eternal Doctor is a complex and multifaceted incarnation—an intricate balance of hope and darkness, brilliance and vulnerability. Their hardened exterior reflects the cruelty and chaos of the universe they navigate, shaped by the countless hardships they have endured. Yet beneath this toughness lies a fierce determination that refuses to be broken, no matter how impossible the odds.
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Despite the weight of their past, it is their compassion that truly defines them. They fight not just to survive, but to protect, to heal, and to inspire. Even in the face of despair, they cling to the belief that there is always light to be found, even in the harshest corners of existence. Their actions, no matter how difficult, are guided by an unshakable sense of duty to those who cannot fight for themselves.
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The Eternal Doctor stands as a reminder that strength and hope can rise from the darkest places. They are living proof that even after great loss, one can still choose to do good. And no matter how far one may fall, redemption is always within reach.