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Characters appearing in Infinity Train. Due to the show's nature as a science-fiction genre anthology series, a majority of its characters only appear in a single season, or otherwise only play a major role during the events of a single season. As such, the few characters that make significant recurring appearances in multiple seasons are listed below, while all others are listed on the season subpages.

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Recurring Characters and Creatures


"Are you my mum?"

Voiced by: Jeremy Crutchley (Glad-One) and Owen Dennis (Sad-One)

A spherical robot who's been on the train their whole life. During the events of Book 1, they serve as Tulip's main companion on the train, being the first being she encountered. Made up of two individual personalities, those being of a scatterbrained optimist and a dour pessimist, One-One can split down the middle to allow these halves to function independently.

Tropes applying to both:

  • Aesop Amnesia: Tulip helps them understand that some problems are too big to fix and they don't have the responsibility or the power to solve them. Which means as soon as they're the Conductor again, they have the power to quarantine and dispose of cars they consider broken.
  • All There in the Script: The different personalities are referred to in the scripts as "Glad-One" and "Sad-One", for the sake of writing and voicing the characters. In-series, the two halves only identified themselves as "One" and "One", with others always calling them the tandem "One-One". Amelia simply calls him "One", which was their identity prior to her splitting their personality.
  • Ambiguous Innocence: Their quirks and Blue-and-Orange Morality get increasingly deconstructed over the course of the show. Amelia accuses of them of only seeing passengers as numbers, which they apparently countered with a notecard for her to memorize about how important each passenger's life is. Even then, they're completely oblivious to the damage Apex has done to the train denizens and the suffering of denizens in general. Overall, it's unclear if One-One truly cares as much as they thinks they do. Book 4 shows that Amelia's assessment is at least accurate in regards to their old "One" persona, who is completely emotionless and uncaring to the plight of passengers, and who's Character Establishing Moment is a blasé admission that Ryan and Min-Gi will die on the train if they fail to figure it out.
  • Ambiguous Situation: How important is One-One in the grand scheme of things? Between the Steward's vested interest in them and their reaction to the Unfinished Car, it's implied that he serves some significant function on the train. It's revealed at the end of Book 1 that they're revealed to be the real Conductor, with Amelia having usurped them, but that first question still remains to some degree. After all, the train still managed to do its job without One-One overseeing things for three decades, with any negatives being due to Amelia's selfish apathy as opposed to the idea that only One-One can suitably handle the role.
  • Be the Ball: Is two halves of a spherical robot. And Book 1 shows that although they mostly walk on their four legs (and sometimes "stands up" and walks around on just two and using the other two as arms), both in their whole form and in their split forms, it is shown that they can pull their arms into... somewhere, and roll around for quick transportation and have enough control to turn at 90 degree angle corners.
  • Big Good: To an extent. They're revealed to be the train's true conductor at the end of first season and is shown to be more benevolent than Amelia ever was, but while their journey with Tulip helped them gain better perspective on what newcomers need to understand their journey, that same kindness arguably doesn't apply to denizens. And when they were "One", they didn't give much thought to the needs to either group.
  • Blue-and-Orange Morality:
    • After being reinstated as Conductor, One-One becomes single-mindedly focused on making sure that the train functions as it is supposed to, with little regard for anything else. Demonstrated in "The Number Car", when they're completely callous to MT's emotional pain because, as far as they're concerned, she's doing the task she was designed to do and that's all that matters. Later, when trying to solve the Logic Bomb of Jesse needing to save MT to "fix" his problem, One-One briefly but seriously considers Sieve's suggestion of killing MT to solve the dilemma.
    • In Book Three, it turns out that they've ordered Amelia to quarantine all the cars she made during her reign, regardless of whether they're harmful or not. They also doesn't see the Apex as anything but normal passengers, regardless of the destruction they cause.
  • Bread, Eggs, Breaded Eggs: This moment when One-One solves the weight puzzle in the original pilot:
    Glad-One: Yay, yay us! Yus!
    Sad-One: No. Nus.
  • Cloudcuckoolander: Many of their mannerisms and sayings come across this way, such as when they repeatedly asks various beings and objects if they're their mother. A good chunk of their behavior and what they say does end up making more sense with the knowledge that One-One is the true Conductor of the train.
  • Commuting on a Bus: Book One is the only season in which they play a major role, before going on to serve as a minor supporting character in Books Two and Four. In Book Three, he's only mentioned (albeit frequently). Justified in this case as he's the Conductor of the Train and thus will have lots of responsibilities.
  • Cute Machines: An adorable little spherical robot.
  • Cyclops: Book 4 reveals that prior to Amelia's takeover, they only had one dot for an eye, symbolizing them only having one central personality and their prior name of... well, One.
  • Deuteragonist: Of Book One.
  • Defrosting Ice Queen: It's heavily implied that the original One did not take the passengers' individuality and even survival into great consideration, and meeting not only Tulip but Amelia, then befriending Tulip and Atticus as One-One, and having Glad-One and Sad-One being able to contrast their opinions against each other and think "together," helped them develop a stronger sense of empathy and camaraderie - at least, to some extent.
  • The Dividual: Of the Syndividual type. The Ones have contrasting personalities but are never seen apart.
  • The Ending Changes Everything: The final episode of Book 1 reveals that they are the Conductor, giving their prior actions and dialogue extra meaning.
  • Exact Words: Most of what One-One says doesn't usually make sense (Glad-One stating Tulip will be "Gone Forever" if her number goes down and Sad-One tells her she's in "a very bad place right now"). Once we know the truth about them, their words have much more context as the former means "she'll finally get to leave the train" and the latter is about her mental scape, not the wastelands of the Train itself.
  • Foreshadowing: In Book 1's "The Unfinished Car", One-One's voices briefly fuse into a single, unemotional, business-like identity, uncaring for the actual safety or opinions of the denizens and only focused on fixing 'broken' things and ensuring things are brought to order, which they believe is "helping" them and making things better. Mirror One also displays these traits in "The Chrome Car", immediately calling the Reflection Police on Mirror Tulip, which would lead to her death, and not even considering any other option that might be more peaceful. Come Book 4's "The Twin Tapes", and it turns out this was their original personality and mannerisms, back when they were "One".
  • The Ghost: Is constantly mentioned in Book 3 but makes no appearance.
  • Hero Antagonist: With Book 3's leads being Villain Protagonists, they view One-One as their enemy. Though One-One does not appear in the Book, their presence is constantly felt and the reason the characters are even traveling the cars to find the Apex again is because of their actions (specifically them ordering Amelia to eject her cars).
  • Hero with Bad Publicity: Grace and her cult believe that One-One's a false conductor and that Amelia's the true conductor. "The Hey Ho Whoa Car" gives them a reality check.
  • Identity Amnesia: After being usurped as the Conductor by Amelia, One-One remembers many facts about the Train, but doesn't remember their true role onboard until they make it back to the Engine with Tulip's help.
    Sad-One: My memory has been terrible ever since the change.
  • Lack of Empathy:
    • Towards the train's denizens. Despite insisting that they are designed to help the passengers, One-One doesn't understand that those denizens might have their own desires and even wish to leave the train.
    • Prior to being usurped by Amelia, One's control of the train was much harsher. Passengers were stripped of their belongings, given no instruction, and One didn't mind them dying on the train if they failed to figure it out.
  • Late-Arrival Spoiler: The first "Train Documentaries" short has One-One reveal that they're the true Conductor of the Train, while "The Black Market Car" has them spoil the huge twist of the Infinity Train's purpose.
  • Light Is Good: Is a white spherical robot and the true Conductor of the train.
  • Literal Split Personality: Glad-One and Sad-One. Book 4 reveals that, prior to Amelia taking over, One-One was just One, a singular personality. Her intervention evidently caused the split.
  • MacGuffin-Person Reveal: The Conductor really wants them destroyed, as it turns out One-One is the original Conductor.
  • Missing Mom: In the first episode of the series when Tulip first encounters them with the snowmen, they mention looking for their mother but having no idea what she looks like either being very big or very small like a bagel. Because the mother they're talking about is the motherboard of the train and they fit into a bagel-like slot.
  • Mission Control Is Off Its Meds: From the pre-book 2 documentaries and beyond. Acting as a therapist for hundreds of people that they've never met face-to-face and trying to clean up the chaos from Amelia's coup clearly has not been easy. Plus they're completely incapable of understanding why MT would want to leave the train.
  • Mister Exposition: Their role in "The Black Market Car" is to give a pre-recorded message to explain the basis of the Infinity Train.
  • Nice Guy: One-One is one of the nicest characters on the show especially considering their role as the conductor and the train's true purpose. However, it doesn't stop them from engaging in questionable acts or empathizing with the inhabitants.
  • Nice Job Breaking It, Hero: Had they not told Amelia how the train works and how it can create just about whatever car you can think of, Tulip and MT's journeys would have turned out very differently, Grace would never have made the Apex, and Book 3 wouldn't have happened at all.
  • O.O.C. Is Serious Business: When they reach the Unfinished Car, One-One suddenly drops everything to "fix" it, not even caring about damaging the car and its inhabitants. When Tulip tries to stop them, their two halves start speaking in unison, something they'd never done before then. Downplayed in later seasons, when it turns out this is technically them being in-character, as their behavior here is in line with their original "One" personality.
  • Poor Communication Kills: In "The Beach Car", One-One tells Tulip that if her number reaches zero, she's "gone forever" and she panics, mistaking that she'll die. If they fully explained that she'll be gone forever from the Train, then Tulip wouldn't have been that terrified.
    • It didn't occur for a long time that, maybe the passengers would like an explanation about what the hell is going on about the Train. Come the beginning of Book 2, they start posting videos — inspired by Tulip's complaints on how there aren't any instruction books — to explain the basics of the Train.
  • Portmanteau: Tulip creates their name from the names of each of their personalities, both of which are "One".
  • The Reveal: In the Book 1 finale, they're shown to be the original Conductor, having had their position usurped by Amelia.
  • Robot Buddy: Naturally.
  • Took a Level in Kindness: Book 4 reveals that One, One-One's former, united personality, was far more robotic and apathetic towards the fates of the passengers than their new divided selves, not even caring if they died. It was traveling with Tulip that finally gave them first-hand insight on the struggles passengers go through and made them resolve to give them a bit more guidance. And despite their apathy for the denizens hadn't changed, they were reluctantly willing to accept MT's decision to leave the train by a loophole.
  • Walking Spoiler: The Book 1 finale changes everything about this little robot's character.

Tropes applying to Glad-One

  • Dissonant Serenity:
    • Their perpetually cheerful demeanor can occasionally be off-putting when the circumstances take a turn for the grim.
      The Cat: I thought if I found you I'd be left alone.
      Glad-One: That's funny! That didn't work at all! [laughs uproariously]
      The Cat: No. It didn't.
    • In "The Beach Car" they happily tells Tulip that when her number (at 115) goes down, she's "gone forever!" They meant gone from the train, not gone as in dead like she believed.
  • The Ditz: Moreso than Sad-One.
  • The Pollyanna: Not much gets them down. This is especially apparent when compared to their other half.

Tropes applying to Sad-One

  • Blunt "Yes": Sometimes when they say something morbid or does something, it's usually followed up by a blunt or a deadpanned yes.
  • Captain Obvious: They tell Tulip in "The Grid Car" that she's in a very bad place, which she means to take the realm where the Infinity Train is (and she's not wrong). They weren't talking about a physical place; but rather about her mindscape, a "bad place".
  • Catchphrase: Frequently talks about writing obituaries for other characters (or even their other half).
  • The Comically Serious: Sad-One speaks in a monotone and often is The Eeyore. He also has some of the funniest one-liners.
  • Deadpan Snarker: They're usually the snarkiest of the group next to Tulip.
  • The Eeyore: Perpetually depressed and cynical, especially when compared to their other half.
    Atticus: Awfully morbid little thing, aren't you?
    Sad-One: Yes.


Amelia Hughes/The False Conductor
"You think you're so important, like you're the only person in the world who's ever felt loss before."

Voiced by: Lena Headey (Matthew Rhys as the Conductor)

The true identity of the Conductor that controls the train for the majority of Book 1. Amelia Hughes boarded the train as a young adult in the 1980s after the early death of her husband Alrick. Though initially cordial with the robot, she soon usurped One as the Conductor when he refused to use the technology of the train to revive her dead lover. She would go on to control the train for the next thirty-three years, until Tulip inadvertently reinstated One-One as the true Conductor, at which point Amelia would begin working for the robot in order to repent for her actions.

  • Aborted Arc: The cancellation of Infinity Train left her storyline incomplete.
  • Actually, I Am Him: Upon hearing Grace and Simon describing the "true" Conductor, she laughs in their faces before pulling out her voice modulator to perform the Conductor's voice.
  • All for Nothing: Her attempt to bring back Alrick was this. No matter what she tried, the Train would not replicate the past and it only succeeded in making her sentence on the train longer than it should have been due to how she'd been directly and indirectly hurting others.
  • Ambiguous Situation: A minor one. We saw her propose to Alrick, but don’t know how much time passed between the proposal and his death or if they got around to the wedding. When asked about him in Book Three, she calls him “[her] person”, not ‘fiancé’ or "husband", so there’s no clear answer as to if they were married or not.
  • Animal Motif: Turtles. Amelia had an old handkerchief with a turtle on it and the Unfinished Car is populated with talking turtles. While she personally insists that the old handkerchief holds zero emotional weight for her, it came to represent how she's unable to face the reality of losing Alrick by tucking herself into a shell both physically (the Conductor's form) and mentally (rejecting the notion that she could have a life without her husband).
  • The Atoner: Promises Tulip and herself that she'll attempt this at the end of Book 1. Book 3 reveals that she's been willingly helping One-One fix the Train by locating and quarantining all the elements she'd added to it over the past 33 years.
  • Bait-and-Switch: In "The Past Car", Tulip and the audience is briefly led to believe that the Conductor is Alrick, thanks to his voice modulator in one of the flashback scenes, with the scene having her assume Amelia died. It's only when the hood on the person's jacket falls down that it's revealed to be Amelia who boarded the train and became the False Conductor after Alrick's death.
  • Berserk Button: In Book 1, she has little patience for those who refuse to obey her commands. At the end of "The Ball Pit Car", she has the Steward try to kill The Cat purely because she questioned their orders to go after One-One. She mellows out to be much less murderous in future seasons, but continues to be frustrated at best when her authority is questioned.
  • Big Bad: Of Book 1. She turns out to be the one the Steward and The Cat answer to, and who controls the train and everything in it.
  • Brainy Brunette: Amelia has had an interest in engineering and technology since she was a child, creating her own crystal radio in grade school and having knowledge of phreaking. Upon boarding the train as an adult, she's apparently skilled enough that One allows her to shadow his operations, and by present day she's gained a near-complete understanding of most of the train's mechanisms.
  • Broke the Rating Scale: Her number is the largest on the train, covering most of her upper body. In fact, it's so big that at some point, Simon mistook her for the entire Apex on his scanner.
  • Broke Your Arm Punching Out Cthulhu: Manages to hijack the train... but only succeeds in making things worse for everyone and condemning herself to an extremely long stay on the train. The train itself didn't even seem to be all that much affected by it, continuing to do its job relatively unimpeded without her input.
  • But for Me, It Was Tuesday: Grace being saved by the Conductor was a life-changing experience that eventually led to the creation of the Apex. Amelia doesn't remember the event at all.
  • Cast as a Mask: Prior to The Reveal, The Conductor is voiced by Matthew Rhys, Alrick's voice actor. Afterwards, unless the Conductor is actively using the voice modulator, she is voiced by Lena Headey, Amelia's voice actor.
  • Chekhov's Skill: During the flashback in "The Past Car", Amelia is shown manipulating a payphone by playing specific tones on her recorder. She is shown manipulating the Steward the same way in the present day.
  • Child Hater: Downplayed. She states she hates children when hunting down Grace, Simon and Hazel, but in practice, she simply has an independent streak and finds interacting with them to just be frustrating and uncomfortable, as opposed to an outright loathsome activity. She does take Hazel with her, but more because Hazel is willing to be independent and not get in her way.
  • Childhood Friend Romance: Amelia and Alrick were classmates when they were children, and eventually formed a romantic relationship by adulthood, getting married before Alrick passed away.
  • Commuting on a Bus: An odd instance of this, as by Book Four, it becomes increasingly clear that she's the closest thing the show has to a central protagonist. Despite this, she only plays a significant role in two seasons; Book 1 (as the main antagonist) and Book 3 (as a supporting character for the second half). She's only alluded to during Book 2, while most of her moments in Book 4 are offscreen. Book 5 would have had her as the protagonist, but CN was against the idea and cancelled the show as a result.
  • The Conscience: Surprisingly, was one towards One, encouraging him to return passengers' belongings, though it ultimately led to her usurping him.
  • Control Freak: As the Conductor, her hostility towards Tulip stemmed from her "messing" with everything on the train. Interestingly, the flashbacks in "The Past Car" show that she was more of a free spirit when Alrick was alive, implying that her current obsession with control is a reaction to his death. She's learned to move on from this in Book 3.
  • Crazy-Prepared: Her Conductor suit has contingencies in check for scenarios such as Amelia being trapped in her own tape, which hampers Tulip's one advantage.
  • Creator Thumbprint: For some reason every car she created has had something to do with turtles, even unintentionally. It's a bug she never quite worked out.
    Amelia: (upon seeing a tree with turtle-shaped leaves) Turtles, again with the turtles...
  • Deflector Shields: When she reappears in Book 3, she now has a jumpsuit with a custom belt that projects an invisible sonic barrier around herself.
  • Demiurge Archetype: Fits many of the typical traits of a traditional Demiurge figure during her rule of the Train. She usurped the role of Conductor, the closest equivalent to a god on the Train, from One-One, the real Conductor, and spent the next thirty years deceiving the Denizens into thinking she was the real deal. She also treats most Denizens with palpable apathy, similar to how the Demiurge is shown tormenting/seeing humanity as lesser, and she's defeated once One-One eventually regains control of the Train from her, thanks to being talked down by Tulip and being forced to leave her own delusions of seeing Alrick again behind.
  • Despair Event Horizon: Losing Alrick was what caused Amelia to enter the train and begin the decades-long quest to bring him back as the Conductor. It's heavily implied that she was Driven to Suicide by the loss, given that the train appeared to her on the roof of her old university.
  • Detrimental Determination: Nothing will stop her from getting what she wants, but this has caused so much harm with the passengers stuck on the train for as long as she's been on it, a cult has been made and her number is so big that she'll die before it ever goes down.
  • Disco Tech: Commands the Steward by playing specific notes. She learned to do this by using that same real-life technique to manipulate pay phones by playing a toy flute.
  • Disproportionate Retribution: The only reason she usurped One and took over the train, hiding his parts in The Snow Car, is because he didn't want to bring Alrick back to life, feeling she should work through her grief instead.
  • Dramatically Missing the Point: Amelia deliberately ignored the lessons that the Train was trying to teach her and became obsessed with returning her life to the way it was before Alrick's death. Because of this, her number is so obscenely high that she wonders if she'll die of old age before she fulfills her Longer-Than-Life Sentence.
  • The Dreaded: Everyone who knows more about them than their name are terrified of the Conductor. And rightfully so. Even after she is dethroned, the Cat hisses just from Simon's description of her, and outright tells him to stay away from her, reminding him of the terrible things he did to earn his number and then asking him to consider what Amelia must have done to earn her massively-higher one.
  • Dysfunction Junction: The size of a passenger's number represents the amount of problems in their life that they need to come to grips with before they can leave the train. Amelia's number is so long it wraps around her arms and torso.
  • Easily Forgiven: Subverted, as while Tulip does forgive her, the Train itself doesn't let her off easily. She still has to work to get off the train the normal way, by getting her number down to zero no matter how long it takes. At the same time, One-One lets her work under him even though she usurped him and even tried to kill him.
  • Evil Brit: As the Conductor, despite her voice being synthetic, there's a touch of a soft yet chilling English accent to it. As Amelia, she is far less overtly evil, though she's still voiced by Lena Headey, so...
  • Evil Cannot Comprehend Good: When Amelia sees that Tulip's gotten her number to 0, she's surprised that Tulip remained on the train to rescue Atticus and refuses to back down even when faced with the threat of never seeing her door again.
  • Evil Is Bigger: She was definitely this as the Conductor, when she towered over everything else, even the Steward. Downplayed when her true nature is revealed, since as a middle-aged woman, she's still taller than Tulip.
  • Excessive Mourning: She has been mourning for Alrick for the past 33 years. Not only does this make her number rise so much that she could realistically never leave the train, but the actions she took to avoid processing her grief contributed to the rise of a cult and hampered the journeys of countless other passengers.
  • Expository Hairstyle Change: In Book 3, in addition to being more physically fit, her hair is much shorter and kept in a neater braid to signify her attempt to move forward and atone for her actions.
  • Faux Affably Evil: As the Conductor, she's soft-spoken and stoic even when threatening others or giving Tulip a vicious Breaking Speech, and brushes away Tulip's resultant tears with a cloth and a mock-affectionate "no more tears".
  • Five Stages of Grief: She has been stuck in the "bargaining" stage for decades and had been trying to use the train's fabrication systems to recreate her old life with Alrick. Tulip helps her finally realize that she needs to move past this and grow as a person.
  • Foil: To One-One. When she confronts Tulip in "The Ball Pit Car", she talks down to Tulip and blames the girl for getting her friends into trouble and mockingly tells her "No more tears" when Tulip is crying. One-One on the other hand, comforts Tulip and tells her it's okay to cry. Moreover, it's the human who is telling Tulip not to show emotions whereas the robot is consoling her. In Book 4, it's implied that Amelia briefly attempted to make One more aware of human emotions and individuality before becoming absorbed in her personal quest to revive Alrick.
  • Foreshadowing: One that's easily missed in the beginning of "The Grid Car". The first thing One-One asks is "Are you my mum?" "Mum" is usually used by someone British, meaning that One-One had to have met up with someone from that country in the past — and Amelia is British, isn't she?
  • Freudian Excuse Is No Excuse: She lost her husband and has been stuck in grief for decades...but that in no way excuses what she's done, both to passengers in general and to Tulip and her party. Tulip shows even though she ultimately forgives her, she is still furious with her when she arrives to confront her. The train also caused her number to go up to an astronomical degree only exceeded when Simon attempted flat out murder of his best friend, and even after redeeming herself she's likely stuck on the train for the rest of her life, showing it certainly doesn't see her grief as a reason not to raise her number.
  • From Nobody to Nightmare: Went from a grieving woman who lost her husband to a False Conductor willing to selfishly ruin other passengers' lives if it gets her what she wants.
  • Gadgeteer Genius: She's managed to repurpose the train's fantastic technology to her own ends. This includes building a Mini-Mecha out of her arrival pod and modifying one of the train's reality-altering cannons into a hand-held weapon.
  • Gender-Concealing Voice: Amelia built a voice modulator for the Conductor's voice to produce a deep, warbling, and commanding voice.
  • Greater-Scope Villain: Technically serves as one to the Apex, as they worship the Conductor as some god-like figure.
  • Happily Married: Was this with Alrick. Emphasis on the was since Alrick died sometime after that.
  • Heel–Face Turn: In the end, Tulip manages to get through to her through empathy and get her to have a Heel Realization. She now works under One-One and is attempting to get her number down. However, she's not necessarily changing to be good, if her reactions to the Apex are anything.
  • Hero Killer: Nothing the heroes do against her so much as phases her, reducing Atticus to a rampaging Ghom and leaving Tulip a sobbing wreck with a Breaking Lecture in just minutes. In fact, due to said Ghom, had One-One not survived, she'd have inflicted a Total Party Kill then and there.
  • Hoist by His Own Petard:
    • If Amelia hadn't intervened, Tulip would likely have managed to reach zero and return home long before reaching the engine, and she could have captured One-One without her getting in the way. Tulip calls her out on it.
    Amelia: You foolish girl, this was never about you!
    Tulip: Well, you made it about me when you attacked my friends!
    • Moreover. if Amelia didn't decide to attack The Cat in "The Ball Pit Car", the feline wouldn't have given Tulip the means of uncovering the secrets of her past.
  • Hypocrite:
    • As the Conductor, she gives Tulip a speech about how everyone in the train has a place. Telling Tulip it's her fault for One-One and Atticus getting hurt because she let them come along. The next episode reveals that she isn't a native of the train, meaning she doesn't belong on it. And the one right after reveals that she usurped control of the train from One-One and shunted him off into another car, whereas One-One and Atticus joined Tulip by choice.
    • After turning Atticus into a Ghom, she mockingly tells a crying Tulip "No more tears". This is coming from someone who's been mourning for her dead husband for a long time...
  • I Reject Your Reality: She wanted nothing to do with her current situation and was desperately trying to create a car that replicated her past before Alrick was killed off. Unfortunately, the more she rejected the notion that she had to move on, the bigger the number on her hand grew. Fast-forward three decades, and it's crawling up her neck.
  • In the Hood: Her robe as the Conductor, which served no practical purpose beyond reminding her of her husband, as it mirrors his black jacket (which she also wore while piloting the mech).
  • Insistent Terminology: Keeps calling One-One just "One". Justified, as that was his name before she usurped him.
  • Interrupted Suicide: Implied. The last location in her tape showed her climbing to the roof of her old college campus in order to avoid Alrick's funeral, so it doesn't take much to guess what she was planning on doing had the train not appeared.
  • It's All About Me: Her sole concern was using the train to recreate her life with Alrick, regardless of the harm that quest would cause to the other passengers or residents of the cars. This has died down by the time we see her in Book 3, but she's still slightly blasé about some of the damage that resulted from her rule.
  • Karma Houdini Warranty: Tulip forgives her for what she's done —- which includes two huge Kick the Dog moments as the Conductor down below —- but the Train won't let her go until her number drops to 0. Which makes sense, as Amelia hasn't even dealt with her personal issues yet, which is the only key off the train.
  • Kick the Dog:
    • She is quite abusive to The Cat and orders the Steward to destroy all of The Cat's belongings for her failure. Near the end of Book 1, the Conductor orders The Cat to pursue One-One and then has the Steward open fire on the area.
    • Almost literally when she turns Atticus into a Ghom for no other apparent reason than being angry at him for not staying in his place. The Conductor then leaves him to dispose of Tulip.
  • Knight of Cerebus: The moment the Conductor or anything relating to them comes into play, the tone goes very dark very fast. Their formal introduction in "The Ball Pit Car" sees the party lose their first member.
  • Lack of Empathy: She had zero empathy for anything Tulip went through or the apparent deaths of her friends or even the other passengers on the train. The repercussions of this are shown in Book 2's "The Mall Car" where Grace, one of the passengers, decides to emulate them and has brainwashed various children to not get their numbers down to 0. She still has shades of this in Book 3, being more amused than anything when she learns about this, outright laughing in Grace and Simon's faces and not seeing (nor caring) that Simon is about to blow up in a big way.
  • Laser-Guided Karma: By her own admission, she was hit with this. All the horrible things she did during her long rule of the train ultimately amount to a number so long it reaches all the way to her neck and it's unclear if she'll live long enough to get her exit.
  • Lesser of Two Evils: This is why Hazel chooses to travel with Amelia rather than stay with Grace and Simon. While mostly apathetic, the worst Amelia would do (if anything) is study Hazel's biology. By contrast, Simon had killed Hazel's mother figure and protector, is clearly gunning for her next if she does stay around, and Grace had recently proved that she's willing to enable that behavior if it means saving her own skin. It's obvious that Hazel would rather go be quarantined than live among people who don't have her best interests at heart.
  • Lethal Chef: She admits that she's not good at cooking when she cooks eggs for Hazel and Grace in "The Hey Ho Whoa Car". Despite this, Hazel claims that she makes good pancakes, though the associated memory from "The Past Car" has Alrick making them, not Amelia.
  • Love Makes You Evil: She was in love with her husband, Alrick and went mad just so she could have him back in some fashion. Sad-One said it best in "The Past Car":
    Sad-One: [upon seeing a memory of Amelia and Alrick kissing] Plato once said, "Love is a serious mental illness."
  • Meaningful Name: Amelia is based on the German word for "industrious", and boy has she been hard at work trying to get her husband back...
  • Mini-Mecha: She uses one as The Conductor, to conceal the fact that she is really an elder human woman.
  • Morality Pet: Zig-Zagged. In the past (as we see in season 4), she acted as one to One, to an extent, pushing him to be more compassionate towards passengers. In the present, the roles are reversed; Amelia is more burned-out and has to read off a card from One-One about the importance of treating passengers properly.
  • The Mourning After: After Alrick's death, Amelia refuses to confront it, and instead winds up on the train spending the next 33 years trying to make a car that recreates her old life with her husband in it. Moreover, she's wearing black, which is usually what one wears at funerals.
  • Necromantic: She took over the train so she could make a room that replicated Alrick and the life they had together when Alrick was still alive. All of her attempts ended up unsuccessful.
  • Never My Fault: Although she admits she did wrong in hijacking One-One's position, she shows no sympathy nor accepts that she's the reason for the Apex's birth. Justified, as she never actively worked to become a figure of worship and finds the cult to be ridiculous, calling Grace and Simon out on falsely assuming who she really was.
  • Nice Job Fixing It, Villain: From what we see of his previous self in Book 4, the current One-One Took a Level in Kindness in a big way from his personality. He originally sent passengers out into the Train without even the vaguest hint as to what they're supposed to do, stripping them of their possessions and locking magnet boots onto their feet so they could be held in place if necessary. In a way, Amelia did the passengers a favor by usurping him, as it forced One-One to experience things from the other side and somewhat made him a better person.
  • Orcus on His Throne: As mentioned below, as the Conductor she doesn't confront Tulip in person until the last three episodes. Justified for the reasons mentioned there, but also because Amelia largely just wants to be left alone to create a car where her husband is alive. She only comes after Tulip when it becomes apparent there's a chance she might lose control of the Train back to One-One.
  • Pet the Dog: Her only kind act in Book 4 was to convince One-One to let the passengers keep the items they brought onto the Train.
  • Poor Communication Kills: Once she takes over as Conductor, her only announcement to everyone on the Train at that point is "You're on your own for this, goodbye". If she was more willing to help explain what the Train was about, like make instruciton videos like One-One would eventually do, perhaps there'd be one less denizen-killing cult to deal with.
  • Powerful and Helpless: Was the most powerful thing on the train with control over it and can create entire pocket worlds within the cars... but the train wouldn't allow her to make the one thing she wanted: her husband and life back.
  • Prefers the Illusion: She actively tried to make an illusion of her husband good enough that it'll make her feel like he's alive again. When stuck in the same Lotus-Eater Machine that Tulip escaped, the Conductor gets out only through the Steward's intervention.
  • A Pupil of Mine Until He Turned to Evil: Book 4 shows that One was teaching her about the functions of the Train before she decided to usurp him.
  • "Ray of Hope" Ending: The end of Book 1 does this. Despite her own doubts about her chances, she acknowledges that Tulip is right and that she should try to fix her mistakes and work for her exit, which causes her number to fall a couple dozen digits. As of Book 3, her number has been going down — but it's still way up to her neck so it's a slow process.
  • Reformed, but Not Tamed: She's still trying to be a better person in Book Three, but 30+ years of isolation make her social skills rusty at best.
  • Rule of Symbolism: The Conductor's black cloak is a reminder of how Alrick used to wear such a thing, and represents how Amelia is in a state of perpetual mourning since one usually wears black at a funeral. Fitting since this was what Amelia was wearing when she boarded the Infinity Train. By Book 3, she wears a completely grey suit, showing that she's moved on from her past and that she's no longer living in the dark (as grey is a combination of black and white), and the symbol of One-One on her belt shows that she's willing to work alongside him
  • Samus Is a Girl: Even when we see her Start of Darkness, Tulip and the audience are initially fooled into thinking the Conductor is her deceased husband. Many traits of her Conductor persona emulate ones her husband had, implying she intentionally modeled it after him.
  • Sanity Slippage: Having spent so long on the train has clearly not done well for her psyche. When we see her in flashbacks, she seems more or less a well-adjusted woman. When Alrick dies, Amelia does not take it well, and becomes an obsessive, sadistic lunatic with a callous disregard for human (or animal) life in her attempt to run from her problems. Her own number, a representation of how close a passenger is to overcoming their problems, started in the 300s... and is now all over her upper body.
  • Shadow Archetype: She's essentially what Tulip would become if she didn't let go of the trauma caused by her parents' divorce and tried to get everyone else to do as she wants. Even better, she has a Floral Theme Naming like Tulip — the Amelia Rose.
  • Shovel Strike: Strikes a golden winged snake down with one to save Grace and Hazel.
  • The Starscream: In Book 4, she appeared to have managed to become second in command of sorts to One, before overthrowing him sometime later.
  • Took a Level in Kindness: She claims this hasn't happened but comparing her from season three to season one, and there is a noticeable difference. In book one, she tossed around Tulip like a ragdoll, hurt Atticus and offered No Sympathy for her situation. In Book 3, while she's amused about Grace and Simon's misguided thinking, she shows sympathy towards Hazel, if some disdain and distance, and makes breakfast for the group. Amelia warns Hazel that she's not a mother and can't care for her, but acquiesces to taking her in, for now at least. The fact that Hazel finds Amelia a better guardian than Simon and Grace speaks volumes of how the woman has changed.
  • Tragic Keepsake: When she went on the train, she was wearing Alrick's sweatshirt. Amelia also took along or replicated his voice distorter. In fact, Tulip initially mistook Amelia for Alrick.
  • Tragic Villain: She just wants her husband back, and everything she did was for the sake of keeping the false hope that the train can bring him back to life.
  • Ungrateful Bitch: The Train came to save her from suicide and One even let her become his apprentice. She repays them both by throwing One out of Mum and using the Train for her selfish needs for the next thirty years, not even caring to help other passengers with their problems.
  • Unrobotic Reveal: She's actually a human woman in a Mini-Mecha.
  • The Usurper: There was a Conductor before her — One-One — and she usurped the train from them.
  • Unwitting Instigator of Doom: Her actions were the cause of a lot of suffering for more than three decades, but this is mostly illustrated in the formation of the Apex, a cult who worships her as a god, sees One-One as the fake conductor, and believe that high numbers are actually a good thing because it allows to stay on train (which they view as a playground) longer. The cult only developed because she once sent the Steward to gather orbs from The Pumpkin Car and had to stop it from attacking a young Grace, who ended up seeing the Conductor as her savior when the pod opened and she saw Amelia's large number.
    • This even happens when she's working to atone for her crimes. If she never unleashed the pulses to quarantine her cars during the timeframe the Apex were in the Unfinished Car, Tuba would never have been killed by Simon nor would Hazel received her Heroic BSoD, since the two denizens likely would have never met Grace and Simon.
  • Villain Has a Point: While she only presents her other problems with the train after her Heel–Face Turn, Amelia's perception of One-One as a cold machine who only views passengers as numbers has some validity to it. The train may be well-intentioned, but it's a Well-Intentioned Extremist that is kidnapping people and displacing them from their loved ones for months, if not years. One's cold, apathetic speech in Book 4 also affirms that even if present-day One-One doesn't have the "only numbers" mindset that Amelia claims he still does, it was a mindset he used to have and probably held for most of the train's existence.
  • Villain of Another Story: How did a grieving widow usurp the Infinity Train?
  • Villainous Breakdown: After Tulip manages to get to the Engine and confront her, she begins to have a complete meltdown as she gets closer and closer to unraveling her plans.
  • Vocal Dissonance: Amelia appears to be in her fifties or sixties, and yet her natural voice sounds like that of a woman in her twenties or thirties.note 
  • Walking Spoiler: Anything beyond "she exists" is a late-game spoiler for the first season.
  • Woobie, Destroyer of Worlds: Underneath the imposing robot, she's actually a grieving widow unable to process her pain. She hijacked the train to try and force it to create a car that was exactly how her old life used to be yet being unable to get what she truly wanted. Even though she repeatedly tried to harm (if not outright kill) Tulip, bullied The Cat into obedience, turned Atticus into a Ghom to punish Tulip for her intransigence, and complicated the lives of who knows how many other passengers over the decades, her breakdown in "The Engine" is so heartwrenching that it's hard to not feel at least a little sympathy for her.
    Tulip: You can't keep trying to recreate your old life. You have to learn how to live in this one.
    Amelia: Don't you get it?! I don't want a life without Alrick! (*sobs*) There's a hole in the universe where Alrick used to be. Why won't the train just let me put him back?
  • Would Hurt a Child: During her Villainous Breakdown, she's willing to attack Tulip for messing with everything. And given how she's been on the train for some time, and one of the passengers is a little girl, she's probably done this before.

    The Cat 

"The Cat"/Samantha
"Tell me, kitten. Do you want to get off this train?"
Voiced by: Kate Mulgrew

A talking feline and one of the most knowledgeable denizens on the train, The Cat has spent hundreds of years traveling through its many cars and collecting all sorts of strange oddities. Despite being a self-serving grifter, she will earnestly help any passenger that asks for her assistance so long as they can offer something in return.

  • Abusive Parents: Abandoned her ward, the ten year old Simon, to a ghom, and then never ever returned to look for him or helped him figure out how to get home. Simon was left permanently traumatized by this incident with constant fears his loved ones would abandon him like the Cat did. Even seeing the cat in the present caused Simon obvious trauma and causes panic attacks.
  • Ain't Too Proud to Beg: Being confronted by the Steward terrifies her.
  • Alice Allusion. A tea-drinking talking cat. Two in one.
  • Ambiguously Evil: She doesn't really do anything wrong in her first appearance save conning Randall and she seems to indicate she was intending to follow through on her deal with Tulip about talking to the Conductor, but she has a clear aura of untrustworthiness about her that eventually convinces Tulip not to follow through on the deal and try and get One-One back from her. "The Cat's Car" reveals that she's working with the Steward, though not completely willingly. Later, after nearly being killed by the Conductor and the Steward, she joins the good guys before leaving for good. Then again she's also known to have abandoned a certain boy named Simon Laurent...
  • Androcles' Lion: She is genuinely baffled by Tulip pulling her out of the wreckage of the ball pit car and expecting nothing in return, so she gives Tulip the solution to Atticus's Forced Transformation and assists with moving the car to the front of the train.
  • Blue-and-Orange Morality: She doesn't function by what one would call a conventional moral code, acting based on a quid quo pro mentality that works in tandem with her Con Man Collector of the Strange lifestyle. She's seemingly obsessed with deals, to the point that nearly every interaction she has with others is phrased as a transaction or bargain. She considers breaking a prior deal to be a major transgression but will offer a return of services to someone who does something for her even if they disdain the offer. The idea of not getting something in return for doing something honestly baffles her and doing something free of charge is regarded as immensely generous on her end.
  • The Bus Came Back: The Cat holds the distinction of being the only character to appear in every season, playing a major role in at least one episode. She gets the most screentime in Book 1, appearing in both an antagonist and ally in four episodes.
    • Book 2 has her as the new manager of the "Lucky Cat Car", an endless carnival where Jesse and MT have to win enough games before being able to leave.
    • Book 3 has her vacationing in the "Le Chat Chalet Car" along with Frank the Bear and Randall, while also appearing as part of Grace's tape, when she recalls how she met Simon.
    • Book 4 has her as a bartender in "The Old West Car", momentarily assisting Ryan and Min-Gi.
  • Cats Are Mean: She's a manipulative, antagonistic cat contrasted to the more trustworthy corgi, though to her credit she seemingly was willing to go along with her deal with Tulip and later was coerced into villainy. She later undergoes a mild Heel–Face Turn and helps the good guys. But even then in Season 3, her actions are the primary cause for a protagonist's Sanity Slippage and death.
  • Collector of the Strange: Her car in "The Cat's Car" is full of random objects. She's very protective of them, as seen when she snaps at One-One for touching her globe of the Earth and later when the Steward smashes up part of her collection to punish her failure to capture Tulip.
    • Her cabin in "Le Chat Chalet Car" has a room full of stuff, including a stuffed Ghom, and Simon's comment about her "collecting again" implies that she's a bit of a hoarder.
  • Con Man: She's introduced tricking Randall the water creature into buying a pipe she advertises as a donut hole maker.
  • Cynicism Catalyst: Is this to Simon. According to him, she left him to die, leaving him with a burning hatred of the denizens of the train. It's later revealed that she had no idea that he wasn't by her side after she ran when the Ghoms came for them, but the fact that she never came back for Simon (or even told him what his number meant) impacted him a lot.
  • Dirty Coward: She'd sooner save her own skin than someone least, according to Simon. She reveals that she didn't realize that he wasn't with her until she had made it to safety. However, Simon points out that she never came back either way, out of either guilt or cowardice. In Book 1, she is willing to hand over One-One and Tulip to the Conductor to save her own skin, but when the Conductor reneges on the deal she sides with Tulip.
  • Distinction Without a Difference: When confronted by Simon in "The Canyon of Golden Winged Snakes Car", she tries to explain that she didn't abandon Simon to a Ghom. She ran. Simon replies that it doesn't matter how she words it; she never came back for him for the past eight years.
  • Does This Remind You of Anything?: "Le Chat Chalet Car" has Simon remark "She's collecting again" in the manner that someone would after discovering a parent has begun drinking again. She seems to obsessively collect things as an addictive habit, and keeps going back to doing it even when it causes her and others harm.
  • Do Not Call Me "Paul": She goes by simply "The Cat" (emphasis on "the"), but it's later revealed in "The Canyon of the Golden Winged Snakes Car" that her real name is Samantha.
  • Dungeon Bypass: Her vehicle lets her ride on the top of the train cars, bypassing the rooms entirely.
  • Enemy Mine: She's not a bad guy, but she does team up with Tulip in the penultimate episode of season 1 to get revenge on the Conductor.
  • Everyone Has Standards: She's a con-artist but even she has an utter dislike for Grace and her entitlement. There's also the fact that she feels genuinely guilty for leaving Simon to a Ghom.
  • Female Feline, Male Mutt: Is referred to with feminine pronouns, making her this to Atticus's Male Mutt.
  • Gratuitous French: The Cat peppers her already sesquipedalian vocabulary with random French phrases, such as bon appetit.
  • Honor Among Thieves: She may be a con artist, but she will repay her debts. Even when the person in question wants nothing in return.
  • Interspecies Romance:
    • "Le Chat Chalet Car" has her taking a vacation in the car with a bear named Frank, and both are just wearing bathrobes when the protagonists show up.
    • She also flirted with Jesse in "The Lucky Cat Car".
  • Ironic Name: Her true name, Samantha, means "listen well". But she didn't listen to Simon's cries about being left behind and ran away in fear.
  • Irony: Was the cause of Simon's hatred for Nulls by abandoning him. And when she finally decides to help him after eight years, she ends up playing a big part in his death.
  • Lotus-Eater Machine: Her videotapes, which was apparently a way to buy time until the Steward showed up.
  • My Greatest Failure: She sees abandoning Simon as this. It didn't help that he was at the mercy of a Ghom. Simon doesn't see it that way because even if she gives the excuse that she didn't realize that he wasn't there until the next car, he also points out she never came back to him.
  • Never My Fault: Refuses point blank to take responsibility for abandoning Simon to his near-death.
  • No Name Given: When Tulip asks her what her name is, she identifies herself as THE Cat. In "The Canyon Of The Golden Winged Snakes Car", Simon calls her Samantha. Prior to this, her voice actress had given her the name "Kate Mulgrowl", and for somet time, this was her accepted name among fans.
  • Nominal Hero: She decides to ultimately side with the good guys in the penultimate episode of Book 1, albeit mostly to get revenge on the Conductor.
  • No Need for Names: She is THE Cat. Her real name is Samantha.
  • Noodle Incident: She and Grace have crossed paths before, seeing as The Cat reacts in anger upon seeing her in "The Lucky Cat Car".
    • She was Simon's companion when he first arrived on the train, but eventually left him at the mercy of a Ghom a few months later, for reasons unknown. She is regretful about the situation, however.
  • Not Quite the Right Thing: Her guilt at abandoning Simon leads her to help him access Grace's memories. Unfortunately, this only makes things worse, leading directly to Simon's breakdown and death.
  • Only in It for the Money: Her raison d'etre. If you want her help, pay her.
  • O.O.C. Is Serious Business: She's calm but pissed at Grace, but she looks in shock when she sees Simon, hinting at the history they had.
  • Overly Narrow Superlative: She refers to Tulip as "my favorite person arbitrarily named after a flower."
  • Poor Communication Kills: Not coming back for Simon after being chased by a Ghom and not even telling him what his number meant caused him to grow into a psychopath. Nice one, Samantha.
  • Really 700 Years Old: "Le Chat Chalet Car" reveals that she's hundreds of years old, as she remarks that it's been 150 years since her last vacation, and later mentions that the car hasn't seen rain for centuries as if she has personal experience with it.
  • Spell My Name with a "The": As she tells Tulip in her final appearance of Book 1.
    Tulip: Well, I guess... goodbye... Cat? Uh... is it "Cat"?
    The Cat: "The Cat."
  • Talking Animal: Like Atticus, she's an animal that can speak.
  • Took a Level in Kindness: In Book 2, after she meets MT and thinks she is actually Tulip, she sounds genuinely worried that she's still on the train.
  • Tragic Keepsake: She kept one of Simon's childhood toys in her cabin.
  • Unreliable Expositor: She seems to know something about Tulip's situation, given that she has a videotape of Tulip's memories and appears familiar with the numbers on her hand. That said, she's playing her cards close to the chest, so all of her advice (such as the fact that reducing the number is good) is suspect. It turns out she's actually aware of what's going on given how she was curious about Ryan and Min-Gi's numbers and the only reason that she's keeping mum about it to Tulip is because she's trying to take One-One away from Tulip to give to the Conductor.
  • Unwitting Instigator of Doom: She plays a big role in why Simon believes denizens are Always Chaotic Evil and untrustworthy, as well his constant fear of abandonment and paranoia about his friends leaving him.
    • When Simon was only ten, he opened up to the cat who took him as an adoptive son until one day she left him while he was being attacked by a Ghom. It's later revealed that she panicked and ran away but didn't realize she left Simon behind until after she made it to safety but still fits because she never went back to search for him despite eight years passing. Almost all of Simon's present crimes were motivated by the permanent trauma left from this.
    • She also serves as this in the present, being the accidental cause for Simon's final push into insanity. First Simon gets extra motivation to kill Tuba after a meeting with the cat reminds him of his permanent denizen induced trauma leading him to kill Tuba as a form of Psychological Projection. Then when Simon tells her about Amelia and how Grace acted around her, she tells him how Amelia is not to be trusted and is very dangerous. Though this is at least justified since Amelia tried to kill her in the past and she didn't know Amelia had a Heel–Face Turn. However, she also gives him the nanites so he can view Grace's memories, despite knowing the danger they posses, which led to Simon betraying Grace, under the belief she was going to leave him like the cat did and trying to kill her and then being killed by the Ghom that had haunted him all his life.
  • You Called Me "X"; It Must Be Serious: Simon calling her by her real name, Samantha, shows how much he's requesting for her help.


Voiced by: Rhys Darby

A sapient, talking creature made of water who originates from the Beach Car.

  • Achievements in Ignorance: Him talking about teamwork to himself after Tulip gave One-One away to the Cat not only got Tulip to get him back but ultimately helped One-One become the rightful Conductor.
  • Animate Inanimate Matter: He's made entirely out of water.
  • Black Bead Eyes: He has a face like a Ditto.
  • The Cameo:
    • He appears in one of the Train shorts, opening a donut holer business.
    • He's seen in "The Lucky Cat Car" as the vendor of a water gun game and tries to sell MT a "donut holer".
    • He's shown in "Le Chat Chalet Car" as all the water in the car, which includes the blizzard surrounding the cabin.
  • The Ditz: He’s either very gullible or has a strange way of valuing things. He instantly buys it when The Cat foists off a rusty pipe on him, calling it a “donut holer” after she pokes holes in a couple of things using it. It may be a general trait of water people, considering Tulip traded a gear she needed for a flower from a merchant and then later got said flower back for a pack of gum, the merchant being instantly enamored with both the flower and the gum and treating them as if they were rare treasures.
  • Elemental Embodiment: Is a water elemental with a somewhat goopy texture. He can also transform into different states of water like snow and steam.
  • Making a Splash: He and his people (who are probably all extensions of himself) are made of water and can cause the sea to part.
  • Mellow Fellow: He generally talks in a mild tone and does not seem to get upset or excited easily. He even agrees to double-cross The Cat without much fanfare.
  • "Metaphor" Is My Middle Name: When Tulip asks if he can slip through the cracks, Randall says, "That's my middle name. Randall Slip-Through-The-Cracks Randall."
  • Nice Guy: A few prawns short of a galaxy, but he's a friendly fellow overall. Then again he did show a bit of bias towards Jesse in "The Lucky Cat Car, though he admits if it was his choice he would not do this."note 
  • Self-Duplication: He can duplicate himself by splitting. It's uncertain whether each clone has a distinct consciousness or if he's just having conversations with himself.
  • Sense Freak: He enjoys the sensation of being boiled.
  • Small Role, Big Impact: In "The Beach Car" he accidentally guilt trips Tulip about her decision to give One-One to The Cat, thus making Tulip go back to get him. Knowing that The Cat was working for The Conductor this whole time and One-One was the true Conductor means that if Tulip didn't go back, Amelia would've made sure One-One could never remember his true purpose.
  • Super-Speed: He can keep up with and even overtake The Cat’s ball car magnet thing with no assistance and while carrying Tulip inside of him.
  • Talking to Themself: Tends to do this whenever he makes copies of himself.
  • Uniformity Exception: Has a blade of grass floating inside him when he takes Tulip to a city of other water people (who otherwise look identical).


The Ghoms

Shadowy creatures that chase down anyone who tries to leave the Infinity Train. They appear to have the ability to drain the life out of other beings.

  • All There in the Script: The name "Ghom" isn't used in-show during the first two seasons. They're finally referred to as such in Book 3's "Le Chat Chalet Car".
  • Bad Guys Do the Dirty Work: After Simon repeatedly shows himself as unwilling to change or stop attacking Grace, he is killed by a Ghom, sparing her the burden of doing the deed herself.
  • Dark Is Evil: Unlike the main villains, they are constantly cast in shadow, making their real forms hard to discern and all the more unsettling when they are revealed. After one kills Simon, the shadow briefly seems to lift, revealing it to have an orange and white coloration, before it explodes.
  • Death Seeker: They live to eat, and if what happens to one when it finishes off Simon is standard and not because of his high number, their first successful meal is their last.
  • The Dreaded: Everyone on the train is terrified of these things. Not even the denizens are safe.
  • Mix-and-Match Critters: They're basically cockroaches with the size and legs of dogs. An official recap video for "The Grid Car" also describes them as being "robotic bugs."
  • Phlebotinum Overdose: After one kills Simon, it explodes not long after. Whether this was a consequence of his number being so high at the time or a natural result of them feeding on a passenger is unclear.
  • Shout-Out: They're named after the Lord of Gluttony from Diablo. Fitting since they feed on one's life force.
  • Small Role, Big Impact: They only appear in Book 1, 2, and 3, but it's in the latter that their biggest impact came in traumatizing Simon Laurent and getting him in the hands of Miss "I totally know how the Train works" Grace Monroe...and the two would eventually make the cult called the Apex.
  • Stronger Than They Look: Atticus, when turned into a Ghom was able to fight the Steward to a standstill.
  • Vampiric Draining: They suck out some kind of energy from Tulip, causing her to wither, though the effect is reversed once she breaks free. When they do this to Simon, it causes him to crumble into dust.
  • Was Once a Man: Zig-zagged; the Conductor turns Atticus into a Ghom, but did so using a weapon that turns anything into whatever orb is inside it, making it ambiguous if Ghoms exist any more "naturally" than other creatures in the train. The Reddit question segment confirms that not all rebellious passengers were turned into them. Book 2 sheds some more light on this in "The Tape Car" with a recording of One-One saying that the titular car is the only car with its world being projected on the outside, implying that the Ghoms are technically Denizens as well.

The Train in general


The titular train that the series is named after, being an endless train that travels forever in another dimension, whose cars each hold bizarre pocket dimensions of their own. While it is unknown who or what created the train, by the end of Book 1, it is established that its purpose is to help its chosen passengers to face their inner demons and trauma.

  • Alone with the Psycho: The train's method of kidnapping passengers (possibly to avoid freighthoppers). It appears that whenever the passenger is completely isolated, the train appears and lures them in then disappears before someone else sees it.
  • Ambiguous Situation: Is the train sentient or not? Unlike the denizens inside it, the train doesn't look any different than any normal train, but the fact it always knows where to find its passengers and the definite supernatural interiors of its cars muddies things a bit. It also creates the denizens specifically to help the passengers, but whether this is a conscious choice or an automatic decision is unknown. Notably, Amelia took over the train from One yet couldn't stop the train from continuing to abduct new passengers or otherwise affect its primary function beyond shuffling cars or building new ones, suggesting a higher will beyond the architecture of the train itself.
  • Appearance Is in the Eye of the Beholder:
    • Downplayed, since it always takes the form of a train, but how said train looks depends on the passenger it picks up and what would entice them to board it the most. To wit, it just looked like a normal train to Tulip, but took the appearance of a fancy fairy-tale carriage complete with red carpet to a young Grace.
    • There are several indications that the train has been in existence for centuries at the very minimum, opening up the possibility of it having taken another form prior to the existence of trains in our world. The alternative is that the existence of mundane trains on Earth was inspired by the Infinity Train itself.
  • Been There, Shaped History: As revealed in the "Chrome Car" and in Book 2, reflections are actually Denizens of the Train and have own world and society. And there aren't just a people based on the concept of reflections, but the actual reflections, as shown at the end of Book 1 where Tulip doesn't have a reflection after getting home. This would suggest that the Train is responsible for creating the very concept of reflections (possibly even shadows as well) and everybody's reflection in mirrors! And with the Cat and the Family Tree Car's comments that the Train has been around for centuries at minimum, predating the invention of train in our world, it leads to the horrifying question: What else is a part of our world and normal lives that was actually created by the Train?
  • Beyond the Impossible: The train is capable of appearing in tight spaces if that's where the passenger is, such as Grace's appearing indoors, or Ryan and Min-Gi's appearing in the small space between two train cars.
  • Bigger on the Inside: Think the train looks big on the outside? Wait until you see the worlds and ecosystems it has in its cars.
  • Blue-and-Orange Morality:
    • The train desires its chosen passengers to become emotionally mature, which isn't bad in and of itself. The problem comes in everything else. The obvious complications of pulling people out of their lives without warning or consent are ignored. People who are not ready to move on are disproportionately punished with ridiculously long sentences, while those who cause trouble or don't care about going home are essentially rewarded with the extended stay they desire. The train will abduct you for reasons as broad as "attempted suicide after the death of a loved one" to "still sad about a dead childhood pet", and abducts anyone from children to the elderly. A passenger can be dropped off in a train section that doesn't have food or water for miles, or find themselves wandering into a train car host to ridiculously dangerous obstacles that are just as likely to kill the passengers as they are to help them grow as people. And that's all without getting into the fact that even with the recently-introduced benefit of One-One's videos, passengers receive no information on why they were taken, and thus have no idea how they're meant to meet the conditions for leaving. Amelia even states in Season 3 that One-One only cares about the passengers insofar as they are numbers on a screen, and has no personal investment in their progress; while it can be debated if that's still their mindset, this was definitely the case prior to their personality split, with them bluntly acknowledging that passengers will die on the train (either by misadventure or from old age) if they fail to catch on, without a hint of empathy.
    • The train does have some concept of outright evil/malice, though it apparently categorizes it as an extension of the passengers' character flaws, given that hurting other passengers and denizens can make your number skyrocket. It also discriminates between apathy and sadism, given that it took Amelia 33 years of disregard for other passengers to earn a number covering one arm, while Simon repeatedly betraying Grace gets him a number covering his whole body in a matter of days.
  • The Call Knows Where You Live: It doesn't matter if you're close, far, or even indoors: if the train thinks you're worthy of being a passenger, it will find you.
  • Character Title: Vehicle Title, technically, but the series is named after it.
  • Character Development: Enforced. The Train takes the saying "Travel broadens the mind" further, having passengers wander from car-to-car, trial-to-trial, world-to-world, encountering new experiences in the hopes of making them grow as people capable of overcoming whatever problem summoned the train to them in the first place. Once it gets a passenger, they're stuck inside it until they either get their exit by dropping their number to zero (signifying they've solved their problem), or die (either from old age or the lethal horrors in some of the cars).
  • Cool Train: A seemingly endless locomotive that houses entire worlds in its cars, and whose primary purpose is to help its passengers face their inner demons and grow as people.
  • Crapsaccharine World: While some of the cars on the train range from "wonderful and mystical" to "odd, but nothing much out of the ordinary", it doesn't change the fact the train still kidnaps people, slaps a number on them and sends them off on an adventure without so much an explanation. Couple with violent passengers like The Apex and creatures that reside outside the train like ghoms, and most passengers will eventually start trying to lower their number as much as possible just to get the hell outta there.
  • Dark Is Not Evil: A dark and menacing train that only wants to help people go through their mental traumas, relationship troubles, or any other emotional issues. If it accomplishes such by kidnapping you, sticking magnetic tape in your brain to copy your memories, and making it look like you're being vaporized when it finally sends you home? Well, that's just part of its charm.
  • Figure It Out Yourself: Once you've entered the train, it leaves you to figure out what you have to do in order to get out. The most it does is create the denizens to help you, but even then, denizens aren't actually under any obligation to do so. After Book 1, the advent of One-One's videos now guarantee you some sort of explanation, but this explanation still only amounts to "Find a denizen, work through your problems, get your number to 0, and off you go!"
  • Good All Along: For a given definition of good, anyway. It's initially unclear what the train's purpose is, and it being as big and ominous as it is doesn't help. It's eventually revealed that the train's purpose is to help people work out their problems, but it's regularly acknowledged that its methods aren't the most ideal, even if they do work.
  • Mechanical Abomination: It's a seemingly endless train that defies the laws of physics all so it can reach a potential passenger, and once it does get them, it leaves them at the mercy of its denizens and the literal worlds that are part of its cars.
  • Meaningful Name: The Infinity Train takes the form of a train that goes on seemingly forever. According to The Cat, "The Train is never finished", with a new car always being made at the Engine before it is sent off and construction begins on the next new car.
  • Mobile Maze: The individual cars are capable of disconnecting and riding on a secondary track atop the other cars, allowing the train to shuffle its layout on a whim. However, instead of adding to the challenge, the intent seems to be to help guide passengers into solving their problems by making sure they pass through a series of cars that demand they face those problems. For example, when Jesse fell into the Apex, the train conspicuously dropped a car nearby that served no other purpose than to demonstrate the worst behavior of the group, thus helping him, not to mention the fact that on a train that stretches past the horizon, he'd wind up within walking distance of their car. Amelia, Tulip, and One-One have also used the feature to relocate cars for other reasons.
  • Non-Malicious Monster: It's a supernatural train that kidnaps people going through a rough episode of their life to put them through the worlds it creates in its cars, but it only does this to help them develop as people.
  • Nothing Is Scarier: Easily the most disturbing thing about the train is how little we actually know about it. Where did it come from? Who created it? How long has it been in operation? How can it pull off some of the feats it does? Nobody knows: the Infinity Train just is.
  • Omniscient Morality License: The closest thing to a justification for the train's purpose. It's capable of quantifying a person's emotional trauma to a numerical value that is accurately tracked as they progress through its cars and develop positively or negatively along the way, until the goal of zeroing out is achieved. There is no measures given towards the reasonable assumption that its methods of acquiring passengers might not be conducive to this process, callously keeping them until they die.
  • Platonic Cave: The Train can be interpreted as a variation. Passengers are brought into an illusory world of constructed scenarios by their psychological hangups or limitations, are bound to said scenarios until they can develop the mentality to slough off such shortcomings, and are returned to reality with an enlightened sense of themselves.
  • Pocket Dimension: Twofold:
    • Each car it makes is its own separate universe, with their own rules and laws of physics and even societies and inhabitants, and most function on a Bigger on the Inside basis. However...
    • The Tape Car is stated to be the only car in which the world projection is on the outside of the car, not the inside. That world being the wasteland which the Infinity Train exists in, as that is the only way a literally infinite train has the room to exist; making an endless space for an endless train. Yes, you read that correctly. The train, an ever-growing chain of pocket dimensions, exists within another pocket dimension that it personally created within itself but then turned inside-out. The giant Wasteland outside? That's still inside the train.
  • Puzzle Reset: A non-video game version. It's stated that the cars reset if no one is inside them (to be more precise, no one that isn't native to the car, since they do have inhabitants), so the puzzles can be done again by others if necessary. The Apex have managed to lock down the Mall Car by using is as a base and never leaving it unoccupied. Cars also aren't supposed to move if occupied, but the Conductor can override that feature.
  • Reality Warper: The train can appear anywhere in the real world it needs to in order to grab a passenger, and will alter itself and the environment to pull off this task, whether it be appearing indoors, in tight spaces, or even temporarily deleting parts of buildings and making tracks in the sky to reach them.
  • Sentry Gun: It has two laser cannons at the front of the train, though for what purpose is unknown. Amelia managed to repurpose one of them into a personal weapon, able transform anything it shoots into whatever the Orb slotted in it is programmed to make. For example, an Orb that causes the cannon to turns every living creature into a Corgi and every non-living object into a Corgi-themed version of the object.
  • Well-Intentioned Extremist: The train only wants you to grow as a person, but to do so it practically kidnaps you in your weakest moment and puts you through several trials, ranging from the mundane to life-threatening, all without even making it clear what you have to do to get out.

    The Passengers 

The Passengers

The people that have been summoned by the train to overcome their problems and change for the better. Every season features one of them as the protagonist.

  • Badass Normal: The longer the stay, the more passengers begin to rapidly acclimate to the dangerous scenarios many cars can bring. And if they weren't physically fit before, they will be after spending months or even years going from car to car.
  • Claimed by the Supernatural: Each one is marked with a glowing green number, with the starting number based on how significant a problem the train thinks you have. Actions and behaviors that go towards solving the problem make the number drop and allow for escape once it hits zero, while failing to learn lessons or behaving outright maliciously causes it to rise and lengthen the stay. If they have problem that can't be solved by the Train, then the number glitches out into various symbols, mostly irrational numbers, due to the paradox, preventing them from leaving.
  • Fatal Flaw: The train deems every passenger to have one.
  • Guide Dang It!: A non-videogame example, but during Amelia's 33 year long reign as the Conductor, passengers were not told why they were on the Train, how to get off of it, what the glowing numbers on their hands meant, or what made said numbers go up or down, so they could only draw their own conclusions based on what they learned on their travels or what happened to them. Grace believed that her number going up was a good thing, and started a cult of children whose goal was to get their numbers as high as possible.
  • Hero of Another Story: Every passenger has their own reasons for being on the train and their own trials to go through. Each season follows a different passenger, with ones from previous seasons never making a reappearance.
  • Mark of the Supernatural: Each passenger has a glowing green number on their hand. Larger numbers represent more emotional baggage, and the number will go down the more they improve as people (but it can also go up if they do bad things and become worse people). When it reaches zero, an exit door to the real world opens that will take them home.

    The Denizens 

The Denizens

Denizens are the various creatures that inhabit the train.
  • Closed Circle: Denizens can't leave the train and enter the real world even if they want to. If they try to step through a passenger's exit, they are blocked by a force field. The only denizen ever to leave is MT, who reflects Jesse's number onto her hand to trick One-One into making an exit for both of them.
  • Loyal Animal Companion: A denizen can choose to accompany a passenger on their journey throughout the Train, if they wish.
  • Nice Guy: Most of the denizens are nice creatures who are willing to help passengers or point them in the right direction if asked. However, there are hostile denizens like the Ghoms who will attack on sight.
  • Our Monsters Are Weird: Denizens can be any shape, color, and size—from a talking corgi, to a floating dinner bell, to a living origami bird, to an entire sentient castle.
  • Talking Animal: Some denizens are talking animals, like Atticus the Corgi, Samantha the cat and Tuba the gorilla.