If you've finished Alchemised and your head is still spinning from 1,024 pages of triple-timeline warfare, memory manipulation, and morally devastating love; welcome, you're in the right place.
And if you're mid-read and losing track of who belongs to which faction, or you've hit a wall at page 400 and decided to take a break but still need to know what happens to these people, welcome, you are also in the right place.
No judgment here. This book is a commitment, and sometimes you need a map before you keep walking.
SenLinYu built one of the densest character webs in recent fantasy. This guide covers every major and significant secondary character in Alchemised, organized by faction, with their role in the story and why they matter. If you're mid-reread, prepping for a book club discussion, or just trying to remember who Shiseo is and why he made you cry, this is the resource.
Full spoilers ahead for all three parts of Alchemised.
For a chapter-by-chapter breakdown, see our Alchemised Chapter-by-Chapter Recap and Analysis. For the ending explained, see Alchemised Ending Explained: What Happened to Helena and Kaine. For the magic system and world-building overview, see our Complete Guide to Alchemised.
Alchemised on audio is a whole different experience. Saskia Maarleveld's narration brings Helena and Kaine's story to life in a way that hits differently than the page. Especially the transference scenes and the Part 2 reveal. If you haven't tried audiobooks yet, or you're ready to leave Audible behind, Libro.fm is offering two free audiobooks when you sign up and use promo code SWITCH. Every listen supports an independent bookstore. Get your two free audiobooks on Libro.fm →
The Central Pair
Helena Marino
Helena is the heart of everything. A gifted healer, trained vivimancer, and secretly an animancer, a type of alchemist who can manipulate minds. She was a member of the Order of the Eternal Flame and a key operative for the Resistance during the war, though the world will never know it.
When we first meet Helena in Part 1, she's a prisoner with no memories. She's been in stasis for over fourteen months. Her resonance, the energy that powers all alchemy, has been suppressed by iron manacles. She doesn't know who she is, what she did during the war, or why the most powerful people in Paladia seem desperate to get inside her head.
What makes Helena extraordinary isn't her power (though it's considerable). It's her refusal to stop surviving. She was sterilized at sixteen by the Order she served. She was used, discarded, and erased by every institution that claimed to protect her. And she kept going. Her arc across all three timelines — from indoctrinated healer to resistance spy to prisoner to mother to exile — is one of the most emotionally devastating character journeys in modern fantasy.
By the end of the novel, Helena has saved Kaine's soul (literally), killed the ancient evil behind the war, given birth to her daughter Enid, and escaped to a remote island where she and Kaine live in hiding. The world she saved will never credit her. The final image of the novel Enid discovering that her mother has been written out of history, is the last knife SenLinYu twists.
Key abilities: Vivimancy (life magic/healing), animancy (mind magic she hid this for years), memory transmutation (she erased her own memories to protect Kaine's identity as a spy)
Kaine Ferron and Helena Marino character art
Kaine Ferron
If Helena is the heart, Kaine is the question the book keeps asking and never fully answers: can you love someone who has done terrible things for the right reasons?
Kaine is the High Reeve the most feared general of Morrough's Undying regime. He commands armies of the undead. He has personally killed, tortured, and terrorized in Morrough's name. He murdered Apollo Holdfast, the former leader of Paladia, to prove his loyalty. He is, by every public measure, a monster.
He is also a spy. Kaine turned against Morrough after his mother was killed and offered himself to the Resistance as a double agent. Every atrocity he committed was performed to maintain cover. Every person he killed was a cost he calculated as necessary to bring Morrough down from inside. Whether that calculation was justified is the book's central moral question, and SenLinYu deliberately refuses to resolve it.
Kaine's relationship with Helena begins as an assignment the Resistance sent her to be his handler, believing Kaine asked for her because he had feelings for her. He did ask for her. He did have feelings for her. But his primary motivation was strategic: he needed the Resistance to think they could control him through Helena so they would trust his intelligence. The fact that he then fell genuinely, devastatingly in love with her is the emotional engine of the entire novel.
In Part 1, Kaine is Helena's captor. He performs transference on her agonizing sessions where he probes her mind for hidden memories while being monitored by Morrough. He cannot tell her who he really is. He cannot explain that everything he's doing is to protect her. He can only keep her alive and hope that her memories return before Morrough kills them both.
Key abilities: Necromancy (death magic), iron manipulation (family legacy, the Ferrons built Paladia's infrastructure), combat mastery
The Holdfast Family (The Resistance / Order of the Eternal Flame)
Luc Holdfast
Principate of Paladia, leader of the Resistance, and the prophesied hero of the war. Luc is Helena's closest friend and the person the Order believed would win the war as long as the Resistance never resorted to dark means. He is charismatic, principled, and tragically rigid. When Helena uses necromancy to save his life, he shuns her, which drives her into isolation and vulnerability. His inability to reconcile his idealism with the messy reality of war is one of the book's sharpest critiques of moral absolutism.
Apollo Holdfast
Luc's father, former Principate, and head of the Alchemy Institute. His murder by Kaine performed to cement Kaine's credibility with Morrough is the event that ignited the war. Apollo's death functions as the original sin of the story, the act that set every subsequent betrayal and sacrifice in motion.
Ilva Holdfast
Luc's great-aunt and a council member of the Eternal Flame. Ilva is one of the architects of the plan to use Helena as Kaine's handler. She is pragmatic where Luc is idealistic, and her willingness to sacrifice individuals for strategic advantage makes her a morally complicated figure within the "good" side.
Apollo "Pol" Holdfast
Son of Luc Holdfast and Lila Bayard, born during the war. Pol appears primarily in the epilogue as a young man studying alchemy alongside Enid. He represents the next generation — the bridge between the old world's scars and whatever comes next. His alliance with Enid suggests that the truth about Helena and Kaine may eventually be restored.
The Bayard Family (The Resistance)
Lila Bayard
First Paladin, Luc's deputy, his most trusted soldier, and eventually the woman who kills Morrough. Lila is fierce, loyal, and operates with a tactical clarity that Luc sometimes lacks. She is the mother of Pol (with Luc) and one of the few characters who survives the war relatively intact. Helena and Kaine settle near Lila and Pol after escaping Paladia, suggesting she is one of the few people who knows the full truth of their story.
Soren Bayard
Lila's twin brother and Second Paladin. Soren fights alongside the Resistance throughout the war. He represents the rank-and-file cost of the conflict — the soldiers who fought and died without the moral complexity or strategic burden that Helena and Kaine carried.
Titus Bayard
Father to Lila and Soren, a former general of the Resistance. Titus represents the older generation's experience with warfare and its costs.
Kaine Ferron and Helena Marino character art
The Undying / Morrough's Regime
Morrough
The primary antagonist of Alchemised — and the book's most terrifying creation. Morrough is the High Necromancer, leader of the Undying, and the architect of Paladia's post-war nightmare. But his true identity is the book's biggest twist: he is actually Cetus, an ancient alchemist and the sibling of Orion Holdfast, the founder of Paladia.
Morrough's entire war, the necromancy, the undead armies, the destruction of the Order is ultimately revenge against his own brother's legacy. Centuries of suffering caused by a family grudge. He is rotting, dying, and sustained only by draining the life force of the Undying he created. When Helena discovers this, she also discovers the key to defeating him: sever his connection to the Undying, and he has nothing left.
Morrough forces Helena and Kaine to produce a child as part of a breeding program designed to create more alchemists for his regime. This coercion is one of the book's most harrowing elements — and, ironically, the pregnancy accelerates the return of Helena's memories, which is what ultimately leads to Morrough's downfall.
Aurelia
Kaine's wife, a political marriage that serves Morrough's interests, not Kaine's. Aurelia is jealous, unstable, and dangerous. She attacks Helena out of jealousy, attempting to gouge out her eyes, and Kaine responds by using the house's iron to crush her against the walls. Aurelia represents the domestic horror of Kaine's double life. The public performance of loyalty to a regime he's secretly trying to destroy.
Lancaster
A former student at the Alchemy Institute and member of the Nickel Guild. Lancaster is one of the more despicable secondary antagonists, he drugs and kidnaps Helena during a party. Kaine's response is one of the book's most violent moments: he disembowels Lancaster to get Helena back. Lancaster functions as a reminder that Kaine's brutality, while strategic in the context of his spy work, is also visceral and real.
Stroud
A figure within the Undying regime who discusses the grotesque side effects of immortality. Stroud serves as a world-building tool. through his observations, we understand the physical and psychological cost of necromantic immortality.
The Alchemy Institute & Other Key Figures
Shiseo
An alchemist from the Eastern Empire, secretly connected to that country's royalty. Shiseo works closely with Helena in the laboratory and becomes a double agent. Appearing to serve Morrough while actually helping the Resistance and Helena specifically. His death is one of the novel's most emotionally devastating moments. Shiseo is the character who makes you understand that the "good" side's victory came at the cost of people who will never be acknowledged.
Jan Crowther
A council member of the Eternal Flame who, along with Ilva Holdfast, orchestrates the plan to use Helena as Kaine's handler. Crowther is pragmatic to the point of ruthlessness. He reveals key information about Kaine's background including that Kaine's mother was a silver alchemist that helps Helena understand the man she's been sent to manipulate.
Falcon Matias
A spiritual healer and council member of the Eternal Flame. Falcon represents the religious dimension of the Order, the belief system that gave the Resistance its moral framework but also, in its rigidity, contributed to its failures.
Cathlin
A secondary character in the support structure around Helena. Cathlin provides care and connection during some of Helena's lowest moments.
Penny
One of the most tragic figures in the book. Helena encounters Penny in the Tower and finds her former friend broken by the war and the regime. Penny's condition, once vital, now shattered, is a visceral representation of what the Undying regime does to the people it captures.
The Next Generation
Enid Rose Ferron
Helena and Kaine's daughter, born during captivity under Morrough's coercion. Enid grows up on the remote island where her parents live in exile. In the epilogue, she travels to Paladia to study alchemy with Pol Holdfast and discovers a book about the war that credits her mother as a non-combatant of no importance.
Enid is the book's final emotional payload. She represents hope, legacy, and the possibility that the truth will eventually be restored. Her determination to understand her mother's real story suggests that the erasure Helena suffered may not be permanent. Whether she succeeds is left to the reader's imagination but the setup is clear: Enid will fight for her mother's place in history.
Character Relationships at a Glance
Helena and Kaine: Secret lovers during the war, captor and prisoner in Part 1, partners in exile by the end. Their relationship is the emotional spine of the entire novel.
Helena and Luc: Close friends and Resistance allies. Their relationship fractures when Luc cannot accept Helena's use of necromancy to save his life.
Kaine and Morrough: Master and (secretly disloyal) servant. Kaine serves Morrough as a spy for the Resistance, performing atrocities to maintain cover.
Lila and Luc: Partners in the Resistance and parents to Pol. Lila's pragmatism balances Luc's idealism.
Morrough and Orion Holdfast: Siblings. Morrough's entire war is revenge against his brother's legacy, making the conflict deeply personal despite its massive scale.
Helena and Shiseo: Laboratory partners and mutual protectors. Shiseo's sacrifice is among the novel's most emotionally costly deaths.
Enid and Pol: The next generation. Their alliance in the epilogue suggests the possibility of restoration and truth.
FAQ
How many characters are in Alchemised? Alchemised has approximately 15–20 named characters who play significant roles across its three timelines. The core story centers on Helena and Kaine, with the Holdfast family, Bayard family, and Morrough's regime forming the supporting cast.
Who is the main character of Alchemised? Helena Marino. The novel is told primarily from her third-person limited perspective across all three timelines.
Is Kaine a villain? This is the book's central question. Kaine committed genuine atrocities murder, torture, psychological abuse to maintain his cover as a spy for the Resistance. Whether his ends justified his means is deliberately left unresolved.
Who kills Morrough? Lila Bayard delivers the killing blow after Helena severs Morrough's connection to the Undying. Helena's vivimancy and animancy make the kill possible; Lila executes it.
Do Helena and Kaine end up together? Yes. They survive the war, escape to a remote island, and raise their daughter Enid together. But they live in exile, and the world they saved will never know what they did.
Is there a sequel to Alchemised? As of March 2026, Alchemised is a standalone. The Legendary Entertainment movie deal (a reported seven-figure rights acquisition) suggests a screen adaptation is coming, but no sequel has been announced.
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For the full chapter-by-chapter breakdown, see our Alchemised Recap and Analysis. For the ending explained, see What Happened to Helena and Kaine. For everything else like magic system, world guide, and thematic analysis see our Complete Guide to Alchemised.
