The Librarian (or rather, the last of the solo Librarians and therefore the first of the current group of Librarians). Hes entrusted with keeping the world safe from dangerous magic.
- Adventurer Archaeologist: It comes with being the Librarian.
- Badass Bookworm: Seems to be a requirement for the post of the Librarian.
- Bad "Bad Acting": Flynn fancies himself an excellent actor...he's not.
- Big Good: He is more or less this now, what with being The Librarian now that Judson is gone.
- Chick Magnet: There's Nicole, Lana, Emily, and Simone, from the films and then Eve in the first episode.
- The Chosen One:
- Only King Arthur is supposed to be able to wield Excalibur. Flynn is able to do it with no problem, and is the only one who can do it with the sword's willing cooperation, having befriended it rather than simply controlling it.
- The Alternate Timelines in the Season 1 finale show that any timeline where Flynn doesn't become the Librarian becomes a Crapsack World.
- Commuting on a Bus: His role in the series, which focuses on the trio of LITs and their Guardian while he is off searching for how to get the Library back in this world. He succeeds at the end of the first season, so he instead spends most of the second season searching the world for missing artefacts. This is due to him starring in Spielberg's The 4400 at the same time, and as Noah Wyle said, when Spielberg calls, you come.
- Cunning Linguist: Flynn rediscovered, and learned, the long-lost language of the birds in 7 hours.
- Heroes Prefer Swords: He keeps sharp by sparring against the one-and-only Excalibur.
- Insufferable Genius: Flynn has an incredible breadth of knowledge across a staggering number of fields and topics. His confidence that he has the resources to solve any problem himself, his penchant for rattling off impenetrably complicated information very quickly and without explanation, and his preference for working alone so that he can do things the way he wants, combine to make him occasionally very frustrating for the people who are supposed to be his colleagues. Baird gets it the most, given that she's his Guardian and her military background has taught her the value of team efforts and sharing of information.
- I Work Alone: Flynn spends the first episode saying this repeatedly; eventually he learns better. To some extent. It's still a major problem in the second season, in which the Librarians suffer several significant setbacks that could have been prevented if Flynn could simply have been bothered to collaborate and share information with the others instead of insisting on running off on his own.
- Jack-of-All-Trades: Flynn's greatest resource is his seemingly endless knowledge of various subjects, while the LITs only specialize in one subject.
- Motor Mouth: Flynn can spout technobabble extremely fast.
- Omnidisciplinary Scientist: He earned more than two dozen degrees before becoming the Librarian and accumulated even more knowledge in that position plus becoming a fairly skilled fencer in the process. He can talk someone through disarming a nuclear bomb while simultaneously neutralizing an ancient mystic artifact. In alternate timelines, without the role of Librarian to take up his focus, he actually holds a world record number of PhDs.
- Photographic Memory: Claimed to have one in the first episode. He certainly commands a lot more knowledge than you'd expect someone without one to.
- Screw Destiny: "I don't believe in fate."
- Screw the Rules, I Make Them!: Flynn, upon having an epiphany inspired by Judson, decides to do away with the old Librarian sink-or-swim tradition and instructs Jenkins to teach the new Librarians about the world of magic (much to his displeasure). And even before that, the Library itself eschews the centuries-old rule of only having one Librarian at a time.
- Sherlock Scan: That's how he became the Librarian. Even manages one on Sherlock Holmes himself, come to life! Not really, it was Moriarty, but close enough.
The Guardian. Shes a counter-terrorism agent who protects the group.
- Action Girl: She was a full colonel before being recruited to be Guardian. Shes the most proficient fighter of the group.
- Agent Scully: At first she is reluctant to believe in any of the fantastical elements until witnessed first-hand.
- Ambiguously Bi: When the world's timeline began shifting, the Cassandra that became the Librarian hints at having had a relationship with Eve.
- Body Snatcher: Briefly. When she's in between dimensions and Ezekiel is facing a strong fighter alone, she takes control of Ezekiel's body to knock the guy out.
- Catchphrase: "Jenkins, quick question", whenever something starts going wrong. Jenkins almost always answers her inquiries with a very unreassuring answer in a nonchalant way.
- Chekhov's Skill: Her filling in for Santa Claus in distributing the Gift allowed her to exist immune from the altering effects of the thread being cut.
- Control Freak: Under the influence of the Apple of Discord. She just wants everyone to "shut up and FOLLOW ORDERS!"
- Did You Just Punch Out Cthulhu?: Though she routinely survives monsters and magical mishaps, she also managed to draw blood on Morgan le Fay.
- The Leader: Of the LITs whenever Flynn isn't around. Otherwise, she's The Lancer.
- The Lost Lenore: For Jake in an alternate timeline where he's the Librarian. Eve doesn't take it well.
- Meaningful Name: She was named Eve because she was born at the stroke of midnight on Christmas Eve.
- Only Sane Woman: She tries to apply her regimented counter-terrorism experience to help the Librarians work more efficiently and logically. Unfortunately, the Librarians are all geniuses in their own ways, and that level of brilliance has left them all quirky, flighty, and more than a little stubborn, so it usually doesn't work. Her interactions with Flynn in particular often come across as the ultimate exercise in cat herding. Justified, as its stated in the Pilot that Guardians are specifically chosen to be this, so that their common sense will ground out the quirkier genius of the Librarians.
- Prim and Proper Bun: She wears her hair in this style quite often, as you might expect for a woman whose military background is one of her defining character traits.
- Ripple Effect-Proof Memory: Thanks to the events of "And Santa's Midnight Ride" she alone can remember the timeline-hopping events of "And the Loom of Fate."
- She Cleans Up Nicely: We get to see her in an elegant dress in the the opener. Then again, Rebecca Romijn was a supermodel.
- You Can't Fight Fate: She's destined to die protecting the Librarian. She already has in three separate timelines for each of the LITs, and very nearly does in the prime timeline protecting Flynn. Luckily, he decides to Screw Destiny and manages to get her to the Library and heal her mortal wound in time.
- It also seems that no matter what she would always have a special relationship with the current Librarian. With Flynn, Jake, and possibly Cassandra she is a love interest, but with Ezekiel she was like a mother.
A Librarian In Training. He has an IQ of 190 and extensive knowledge of art history.
- Adorkable: Stone gets very excited whenever he sees any kind of magic, and geeks out over a flying sword. He becomes more accustomed to the magical world, but still has nerdgasms about magic and is still spending all his free time in the annex, reading the "unedited" versions of art history and trying to get the glowy-globe to float and project an illusion of the world.
- He becomes positively giddy after being shot and being given a health pack to learn that he's in a video game. He starts bombarding Jones with questions to find out what genre of game they're in.
- Badass Boast:
Stone: "I was a surveyor for ten years. I can measure distance like a tachymeter!"
- In regards to his sense of distance:
Stone: Because I'm a genius, pop. I'm a genius. I speak nine different languages, and I can read over a dozen more! I have honorary degrees at universities on four different continents! I'm the first one they call when they discover a new piece of art, and I'm the one they're scared to call, because I'm the best in the world at discovering a fake! And I didn't tell you, because I knew that you'd see anything less than chasing the family business as a betrayal!
- After he gets fed up dealing with this father:
- Badass Normal: He is a physically fit human male with no special powers of his own but he can take on the Monkey King in a straight fight and come out on top.
- The Big Guy: While being a Librarian means that he's no slouch in the intelligence department, he is the most physically buff member of the team and, other than Baird, he's the most adept at physical combat.
- Boisterous Bruiser: He really enjoys a good barfight. One of the things he said that he would miss most having become a Librarian is that he could enjoy Christmas with his family and be a part of the year bar brawl.
- Genius Bruiser: He is the only one of the three LITs with any fighting experience to speak of means that Baird often relies on Stone to back her up when things get violent. On the other hand, he has a bad habit of not using his genius intellect when it comes to fighting, to Baird's exasperation; in "And the Horns of a Dilemma" she scolds him to "fight smarter, not harder." He eventually gets formal training by spending two months at Shangri-La studying with the one and only Monkey King until he can best his mystical teacher in a straight fight.
- Heroes Prefer Swords: Stone grabs a rapier whenever the portal opens unexpectedly. The same rapier each time, in fact.
- Hidden Depths: He keeps his amazing intellect and love of art a secret from his family and friends because he doesn't want them to look at him differently. Instead, he works as a roughneck while publishing books on medieval art under pseudonyms.
Jenkins: You're a very odd cowboy.
- This gets thoroughly Lampshaded:
- Not So Above It All: Jake likes to act as the big brother two the other two, but he and Ezekiel both get excited about being in a Video Game and they have similar reactions to a submarine.
- Omniglot: He knows how to speak 62 languages, and can act as a translator the rare time they need someone who doesn't speak English. As noted by Cassandra when he spoke cockney rhyming slang.Cassandra: Are there any languages you don't speak?Jake: Well, my Urdu's a little rusty.
- Refusal of the Call: He not only turned down an opportunity to interview for the position of The Librarian, he also turned down scholarships to two major schools in order stay home and work in the oil fields. It's later revealed that a major impetus for Stone staying was because his father was too drunk to do anything to save the company Stone's great-grandfather founded.
- Southern-Fried Genius: Stone works on an oil rig in Oklahoma, but has an IQ of 190 and is an expert in art history.
- Took a Level in Badass: In "And the Fatal Separation", Stone spends several months in The Shangri-La, learning martial arts from the Monkey King himself, and has gotten so good he can beat his teacher even when the latter uses his tail as a weapon. He's then shown to be easily capable of beating up ninjas, even while drugged.
- "Well Done, Son!" Guy: When we finally get to meet Jake's dad in Season 2 it's made clear that the man will go out of his way and ignore all semblance of logic to blame all of his problems on how his son has failed him. The episode focuses on Jake letting go of the part of himself that still wants his father's approval and moving on.
A Librarian In Training. She has the special gift of auditory and sensory hallucinations linked to memory retrieval known as synesthesia.
- Absurd Phobia: Mentions having an irrational fear of ravioli in "and What Lies Beneath the Stones".
- Abusive Parents: Cassandra describes her parents as very strictly limiting and controlling her life in an attempt to groom her as an intellectual, doing things like telling her Santa wasn't real at the age of three and forbidding her from a normal teenage social life or any hobbies or entertainment that didn't have educational value or look good on a college application. By the time the series starts they seem to have abandoned her completely, at least in any emotional sense - Cassandra never mentions having any contact with them, and in "And the Rule of Three" she says sadly that she thinks they loved the dream they had for her future more than they loved her.
- Adorkable: Cassandra is very enthusiastic about her job. Especially in "The Rule of Three".
- Alliterative Name: Cassandra Cillian.
- Almighty Janitor: When she first appears she works at a hospital as a janitor even though she seems to know more about medicine than any of the doctors there.
- The Archmage: In an alternate timeline where she's the Librarian, Cassandra learned magic from Morgan le Fay.
- Ambiguously Bi: She's had loads of Ship Tease with several women throughout the show, on top of her reaction to becoming a Chick Magnet in "And the Fables of Doom". She's also had mild teasing with Stone and Ezekiel. Confirmed in "The Eternal Question", where she asks Jenkins out on a date but later shares a kiss with Estrella.
- Badass Adorable:
- When she's Drunk on the Dark Side.
- Also in another timeline where she's the Librarian.
- Bi the Way: Confirmed in "The Eternal Question".
- Blessed with Suck: She has a practically magical mathematical ability that keeps saving the Librarians from almost certain death, but it's all because of a brain tumor that will eventually kill her. somewhat averted, however, when she finally has the surgery to get the tumor removed and her ability is even stronger—to the point where she's telepathic
- Can't Kill You, Still Need You: Dulaque keeps Lamia from killing her because even a proto-Librarian can be useful to their plans. And because he doesn't want blood on the rug.
- Mostly the rug.
- The Chick: She is the more feminine of the two women on the team.
- Chick Magnet: Becomes one as she takes on the role of Prince Charming as a result of fables coming to life. She's pretty okay with it. She also has a habit of attracting one or two girls a season.
- Child Hater: When she and Ezekiel are stuck telling each other secret truths in order to keep a door open in "and What Lies Beneath the Stones" (It Makes Sense in Context), one of the things she shouts is that she can't stand babies. The magical lie-detecting door doesn't close.
- Crouching Moron, Hidden Badass: Under the effects of the Apple of Discord she uses her knowledge of mathematics to disable Lamia effortlessly, as well as use a single power station to create a chain reaction that would destroy all of the power grids in Europe.
- Cursed with Awesome: Cassandra's synesthesia is really cool and allows her to do things like calculate how the sun would fall on a specific day of the year, but triggering it cripples her with sensations for a while (as well as giving her nosebleeds) and her abilities are tied to a grape-sized tumor in her brain. until "The Eternal Question" where the tumor gets removed and it turns out it was actually holding her back, on the down side though the new upgrade to her powers is even more overwhelming
- Establishing Character Moment: She was working as a janitor at a hospital and gave the correct diagnoses where the doctor had it wrong... and then had to work through the sensations and thoughts her synesthesia was overwhelming her with.
- Evil Redhead: While not evil per se, her actions in the first episode demonstrate that if your character is played by Lindy Booth, she's probably going to be untrustworthy at some point. Of course, we get the straight up evil with the Apple of Discord.
- Ill Girl: She has a tumor the size of a grape in her brain. until The Eternal Question when it finally gets removed
- Karma Houdini: Subverted. While the majority of the team welcomes her back with no repercussions after she betrays them in the first episode, Jake - although he enjoys working with her - still doesn't trust her, and most likely never will.
- Meaningful Name: She can see everything. However, that power comes with a curse.
- Missed the Call: She missed out on interviewing to be the Librarian when Flynn got the job. As opposed to the boys' Refusal of the Call, Cassandra was in the hospital at the time and couldn't make it to the interview. However, upon learning the mysteries of the library she Jumped at the Call.
- Motor Mouth: Cassandra can spout mathematics really fast indeed.
- Next Tier Power-Up: After her surgery, Cassandra's synesthesia seems to have returned... and the tumor seems to have been blocking off possible photographic memory, as well as Psychic Powers such as telepathy.
- For the record, Flynn claimed she already had a photographic memory in the first episode.
- Ms. Fanservice: She generally wears short dresses. And then she turns evil and takes the dress off...
- Not Afraid to Die: Having been told at a young age that she will die due to her tumor, Cassandra has accepted her doomed fate so much that she has a date already in mind. Not that she would say no to a convenient and easy magical cure, of course...Cassandra: I know what Death looks like. I see it every day when I look in a mirror.
- The Pollyanna: That tumor has seriously messed up her life. She's had it since she was young, it is going to kill her, it's heavily implied that it somehow ruined her relationship with her parents to the point that she has stated that she has no one, and she was working as a janitor at a hospital before becoming a LIT, a low-paying job when she probably has some serious tumor-related medical bills to pay. Despite all this she is a pretty upbeat person.
- Psychic Nosebleed: Whenever she tries to visualize something too complex, like a map of the leylines, or how the pyramids could open a portal into the void.
- Rummage Sale Reject: Her taste in clothes involves some really odd combinations at times, such as overall shorts with two different floral patterns and bright purple leggings in "And the Heart of Darkness," or the over-the-top Christmas-themed dress and striped tights she wears in "And Santa's Midnight Run." Her Evil Costume Switch in "And the Apple of Discord" proves that this even extends to her undergarments, given that she turns out to be wearing leopard print hotpants over black leggings under her girly floral dress for some reason.
- Trademark Favorite Food: When Cassandra's synesthesia takes her to her Happy Place, it involves breakfast foods, usually cereal with milk.
- In the inverse, she used to really like grapes, but then the doctors described her tumor as "the size of a grape".
- Verbal Tic: Repeating words (usually in threes) when doing calculations.
- Your Days Are Numbered: Cassandra has a brain tumor that will eventually kill her. until "The Eternal Question, in which she has a life saving surgery that takes care of it
A Librarian In Training. Hes a master thief and the team's go to guy when it comes to technology.
- Arbitrary Skepticism: Despite finding out that magic is real, at first he flatly refuses to believe in certain things.
- The Baby of the Bunch: He's definitely the youngest of the Librarians, around late teens, early twenties.
- Being Good Sucks: When Ezekiel wore Santa's hat, thereby becoming an embodiment of good will, he was literally sickened by how jolly and selfless it made him.
- Averted in "And The Point Of Salvation": it's finally made explicit (to the other librarians and the viewers) how selfless and kind he can truly be.
- Averted even more in "And The Christmas Thief", which reveals that he never actually kept any of the money he made from his heists. Instead, he gave it to people and communities that needed it.
- Book Dumb: Among the main cast, Jones has the least knowledge of history, folklore, and academia outside of his own personal interests. Stone frequently voices exasperation about the things that Ezekiel doesn't know about, which include the Dewey Decimal System and Atlantis.
- Brilliant, but Lazy: In "And the Point of Salvation", he is able to quickly learn about engineering, physics and combat from his teammates when he really has to.
- Child Prodigy: Was but a teenager when he got his invitation to be a Librarian. In the timeline when he does become a Librarian a decade prior to the series, Eve Baird becomes a mother figure to him.
- Crazy-Prepared: Played for laughs. When it turns out that he has to go up against vampires, he lines the interior of a trench coat with garlic, a cross, wooden stakes, holy water vials, and a sword so that he has every possible vampire weakness covered.
- Disability Immunity: Is the only one to hold the Apple of Discord without any drawbacks because he is already the worst version of himself.
- Establishing Character Moment: We first see him use his wits trying to steal something before Flynn catches him.
- Even Bad Men Love Their Mamas: When we see his family in ...And The Christmas Thief his mother berates him first for not being a good thief despite teaching him and his adoptive sisters the trade and, after she finds out how renowned a thief he was, for not sharing his wealth from his heists with them over those years not knowing he never kept any of it either. Nevertheless, he still tries to keep her out of trouble when she inadvertently gets them involved with The Bank of Thieves and gets pissed when the Saint of Thieves insults her. When Lenore later has a HeelFace Turn realizing how much she enjoys giving instead of stealing, she shows a much softer side and Ezekiel assures her he's always loved her for taking him in and raising him as her own.
- Even Evil Has Standards: An unrepentant thief, but there are some things he says even he won't do:Ezekiel: I made a good living walking the line between snatching and borrowing, but this? These people have gone too far.
- Heel Realization: One for the audience during "And the Apple of Discord". Jones' worst possible version of himself was him exactly as he was, a narcissistic thief with enough compassion and scruples to be a hero when called upon. If that's the worst possible version of him, imagine what the best possible version could do.
- Heroic BSoD: Poor Ezekiel has a major breakdown during "And the Point of Salvation". Watching your friends die in front of you over and over again? I'm surprised he didn't have a complete mental breakdown.
- The Immune:
- The Apple of Discord has zero effect on him, apparently because as a completely self-centered thief, he's already the worst he could ever be.
- He was also immune to the love potion in "And the Curse of Cindy". Everyone assumed it was because he's already such an egomaniac, but it's later revealed that it's because he was already in love with Cindy.
- It's All About Me: Subverted. While Jones definitely has a very generous amount of self-esteem, he's a lot more empathetic than people give him credit for.
- Jerk with a Heart of Gold: Professional thief, general smartass, but genuinely goodhearted, and willing to put his life in danger to stop the bad guys. However, he doesn't think he's a hero, just a rogue.
- Just Like Robin Hood: Ezekiel never keep the money from any heists of his thieving days. He donated every cent to communities and people in need.
- Karma Houdini: While he doesn't do anything really bad, he still tends to avoid serious negative consequences.
- This is, in fact, WEAPONIZED in the "And the Fables of Doom". He's Jack, The Fool.
- The Nicknamer: Named Cassandra's tumor "the brain grape" and calls Cassandra "Math Girl". When a gargoyle starts following him around, he names it Stumpy.
- No Challenge Equals No Satisfaction: Or so he claims, when Stone asks him why he hasn't used any of the ridiculously useful magical artifacts in the Library to steal things (the closest he comes is using the back door to evade police).
- Poke the Poodle: Most of his "evil" in Token Evil Team Mate really falls here. And apparently, that's as evil as he's capable of being.
- Refusal of the Call: He threw away his invitation to become the Librarian.
- Sesquipedalian Smith: Ezekiel Jones.
- The Smart Guy: While all of the Librarians are geniuses in their respective specialties, Ezekiel is the one most prone to spouting random Techno Babble.
- Status Quo Is God: No matter how much character growth he goes through over the course of an episode, it will somehow be undone before the final credits roll.
- Techno Wizard: One of his more overlooked traits.
- Token Evil Teammate: He makes no lie that he'll steal something or badger with authority, but he's already at his most evil since he remains unchanged while holding the Apple of Discord.
- Tyke Bomb: Ezekiel was raised by a female Fagin who lives and breathes thievery. It's a miracle he turned out the Loveable Rogue he is today.
The caretaker of the Librarys Annex.
- Always Someone Better: Jenkins/Galahad is the only one to ever best Dulaque/Lancelot with a sword.
- Badass Grandpa: He's an elderly man who holds his own against Sir Lancelot and at one point single-handedly cut down an entire group of vampires.
- Brought Down to Normal: Gives up his immortality to save Nicole Noone from death, becoming a rank and file human.
- Cynicism Catalyst: He's easily the grumpiest of the group, but he is really just tired of getting his hopes up and having them dashed over a series of bad events that he just wanted to live in seclusion. He hasn't said exactly what, but they seem to imply his fallout with Dulaque.
- Deadpan Snarker: All the time.
- Elderly Immortal: He looks like a man in his 60s, even though hes centuries old and immortal. A scene in "And What Lies Beneath the Stones" briefly shows a photo of a youthful-looking Jenkins which appears to have been taken sometime in the 1970s, making it unclear how his apparent age relates to his immortality.
- Hidden Depths: Not only a master of Library lore, he's on First-Name Basis with Mrs. Santa Claus, is a master swordsman, and is conversant with rap and hip-hop.Ezekiel: Hmm, Jenkins, you know about hip hop?
Jenkins: Ah, well, as Eric B. and Rakim so aptly flowed, "I'm paid in full."
- Immortality Hurts: Despite being Nigh Invulnerable to many things (he can just shake off a roof collapsing on him), he notes that he's been put through worse torture than any mortal could dream on more than one occasion.
- It's Personal: There are hints that Jenkins and Judson didn't really get along, which is why Jenkins was "exiled" to the Annex instead of being in the Library. Jenkins claims it was because Judson only wanted to lock up the dangerous magical artifacts, while Jenkins wanted to study and find a use for them. The real reason is Charlene. Both immortals love her, but her heart only belongs to Judson.
- Incorruptible Pure Pureness: A devil notes what an achievement it would be to get him to sign a deal, due to his reputation as Galahad, purest and best of the Arthurian knights for this trope.
- Knight In Sour Armor: Almost literally.
- Lost Lenore: He pledged his love to someone a long time ago only for her to marry someone else and eventually die of old age. As a knight bound by the code of chivalry, he takes his pledge deadly seriously and refuses to love anyone else for as long as he lives. That person is revealed to be Charlene, whose heart belongs to Judson, her Librarian.
- Minored in Ass-Kicking: Prefers to stay in his books and act as Mission Control, however, when the need arises he is easily the best fighter in the group. He is, after all, freaking Galahad!
- Really 700 Years Old: Several episodes hint he is older than he looks before finally revealing that he is Sir Galahad of Camelot, in the Season 1 finale.
- Rules Lawyer: His knowledge of rules and procedures is so extensive that hes able to successfully stall for time during the Conclave.
- Running Gag: Each episode shows him communicating by use of a different archaic landline phone. One of which is a payphone on a rolling stand.
- Sarcastic Devotee: He snarks at Flynn and the LITs and their idealism, but is staunchly loyal to them and takes care of them. Ezekiel calls him out on it in "And the Apple of Discord," pointing out that Jenkins talks down to everyone and makes them feel like idiots while at the same time nudging them in the right direction to help them succeed.
- Sufficiently Advanced Magic: Before the LITs came along, his area of study was repurposing magical artifacts into practical inventions.
- We Used to Be Friends: Dulaque and Jenkins appear to have been quite close in the old days, before each chose their current paths. Made even more prominent when it's revealed that they are Lancelot and Galahad respectively, and turning it into Parental Issues since Lancelot was Galahad's father in the legends.
A sentient library that is its own dimension.
- Adorkable: Played With: As Ray, it is a childlike, sweet person who loves milkshakes and travels around in a bookmobile. Not so much in the Trial of One where takes possession of Jenkins and forces the Librarians to fight and kill each other and then kills Jenkins.
- Bigger on the Inside: The Library is a dimension unto itself; its current main access point appears to be a few hundred square feet of stone building.
- Chaos Architecture: Can shift around rooms as it pleases (or as the Librarians request).
- Eldritch Abomination: Is a sentient library.
- Humanoid Abomination: When its soul becomes unstuck from its body it takes human shape, but has superhuman strength, Nigh-Invulnerability, and who knows what else if it had been aware of what it was doing.
- Genius Loci: The Library is sentient and has displayed a will of its own, helping in things like the selection of new Librarians.
- Magical Library: A sentient library filled with magical tomes and artifacts.
- Our Souls Are Different: When Flynn releases it from the failsafe that had locked it away in another dimension, its soul gets unstuck from its physical form and becomes humanoid, leaving the physical form of the Library functional—but falling apart, forced to eat away at the magic artifacts it contains to try to keep it alive. Ultimately, it would have even consumed the souls of its inhabitants.
The Serpent Brotherhood
The mysterious immortal leader of the Serpent Brotherhood
- Arch Nemesis Dad: Turns out he's actually Jenkins' father, Lancelot.
- Big Bad: He serves this purpose in the show's first season, as the leader of the Brotherhood
- Evil Brit: He's British, and is pretty darn evil.
- Elderly Immortal: He looks like a man in his 50s, even though hes centuries old and immortal. It is unknown if this is due to him aging very slowly or because he acquired his immortality when he was already an old man.
- Evil Is Hammy: He seems to thoroughly enjoy being hammy all the time. Especially when eating pizza.
- Fountain of Youth: Cutting the Loom of Fate restored him to his youthful form from when he was still a knight of Camelot, if temporarily.
- Meaningful Name: Lancelot du Lac.
- Really 700 Years Old: He is older than Jenkins and his immortality is demonstrated on the show.
- Villain with Good Publicity: Dulaque is apparently a well-respected philanthropist. You know, on top of leading an evil cult that wants to Take Over the World with magic.
- We Used to Be Friends: With Jenkins before they each chose their current paths. Was, in fact, his father.
- What Happened to the Mouse?: At the end of the first season he simply disappears when the Loom of Fate is repaired.
- Wicked Cultured: He stops Lamia from killing Cassandra because he doesn't want blood on his new rug. He also has an extensive private collection of artwork and artifacts.
- Villain Ball: Justified example. After putting on Santa's hat, he's forced to obey Christmas Wishes, though he can resist. So, the heroes wish for him to take actions that benefit him in the short term, but not the long term.
- Xanatos Gambit: Though he was fairly active in interfering with the Librarians, at the season finale he tips off Flynn with information of how to get the Library back, and relies on them using their collected artifacts to open a gateway to the Loom of Fate.
Dulaque's second-in-command in the Serpent Brotherhood.
- The Dragon: She serves as Dulaques main enforcer and assassin.
- Evil Brit: British. Evil. Tries to kill the Librarians for the sake of bringing magic back into the world.
- Killed Off for Real: By Dulaque, no less.
- Knife Nut: Lamia likes her knives.
- Meaningful Name: Lamia was the name of a woman in Greek mythology cursed by Hera. She is typically depicted as becoming a serpent woman. In the series, Lamia is somewhat of a knife nut that prefers killing people via overhand stabbing, never mind working for a serpent-themed cult.
- Number Two:
- She seems to answer only to Dulaque.
- In the timeline where Cassandra is the Librarian, Lamia is her Guardian.
- Sensible Heroes, Skimpy Villains: Shes always wearing sexy revealing outfits even when they would be counterproductive.
- Well-Intentioned Extremist: Lamia genuinely wants to make the world better, and thinks bringing magic back will do that. It's just that she's willing to go to any lengths to achieve this goal. "And the Loom of Fate" indicates that under other circumstances, she could have taken a more heroic path and become a Guardian.
- You Have Outlived Your Usefulness: Once Dulaque has no use for her.
- Adaptational Villainy: In The Tempest Prospero wasn't the nicest person to be around, but he wasn't the outright villain he is here. It's a clue that he's not really the Prospero from "The Tempest", he's the Prospero from an earlier, unpublished version of the play called "The Triumph of Prospero". See also Demonic Possession below.
- Almighty Janitor: He disguised himself as a museum janitor in order to recover his drowned book.
- Bad Boss: He insults Moriarty for not being high born and Moriarty states he would pull a You Have Failed Me if Moriarty didn't return with Ariel's watch that Eve had stolen.
- Big Bad: Of Season 2.
- Demonic Possession: Is actually William Shakespeare possessed by Prospero acting out as Shakespear's id.
- Evil Sorcerer: Of course.
- Gratuitous Iambic Pentameter: Speaks in rhyming couplets of iambic pentameter.
- Refugee from TV Land: He's a Fictional, a fictional character that's come to life due to extreme popularity.
- Screw Destiny: He's somehow found a way to rebel against the ending of his original story, reclaiming his book and seeking his staff.
Noted mathematician and criminal mastermind. The famed enemy of Sherlock Holmes.
- Adaptational Heroism: While still not a hero by any means, he is still far nicer than any other incarnation of the character.
- Affably Evil: He's working for Prospero under duress, and is more than happy to work with Eve when their objectives temporarily align
- Ambiguously Bi: Regularly flirts with Eve and once states that he and Holmes were almost "partners" but didn't want to work with him.
- The Dragon: To Prospero in Season 2.
- Foe Romance Subtext: With Eve. He refers to her as "Duchess" and considers her a Worthy Opponent.
- Refugee from TV Land: He's a Fictional, a fictional character that's come to life due to extreme popularity. Or brought to life by Prospero's magic as the case may be.
- Sherlock Scan: Ironically, he pulls off a number of these, such as deducing Jenkins' past as a Knight of the Round Table based on his accent and hand movements.
Victor Frankenstein's attempt at creating life, brought from the book by Prospero's magic.
- Adaptational Attractiveness: The original monster was described as a hideously ugly creation, with translucent yellowish skin pulled so taut over the body that it "barely disguised the workings of the arteries and muscles underneath"; watery, glowing eyes, flowing black hair, black lips, and prominent white teeth. Here he's got a nasty scar on the side of his face but that's about it.
- I Just Want to Be Loved: His primary motivation.
- Kill It with Fire: Subverted. Ezekiel, taking cues from the movie, believes that the monster is afraid of fire and brandishes a lighter at him. He just blows it out.
- Purple Prose: Stark contrast to his more famous film version, the creature is quite well spoken.I hold no hate for fire. My hate is reserved for those who abhor me, meaning thee, man, who fancies himself in the image of the Divine, and yet vilifies me as monster!
- Talking the Monster to Death: Flynn and Ezekiel get him to pull a HeelFace Turn by convincing him to get plastic surgery and go into professional sports.
The fearsome beast of Greek myth. Nasty creature. Holds a grudge.
- Badass Biker: His human disguise.
- Groin Attack: Can take multiple gunshots straight to the crotch, and it only knocks him down for a half minute.
- Immune to Bullets: All they do is agitate him.
- Morphic Resonance: His human disguise looks very bull-like, with a bull-like nose ring. And a tendency to snort.
- Super-Persistent Predator: Once you're in his labyrinth, he won't rest until you're dead.
An immortal magical being who gathers the good will of all mankind and spreads it all over the world on Christmas Eve.
- Badass Grandpa: Despite being in the form of a 58 year old, and being considerably older than that, he's a powerful magical being that's more than able to mix it up when the occasion calls for it.
- Boisterous Bruiser: In his Odin incarnation he loves a good bar brawl.
- Charm Person: Santa is one. He can spread good will to people.
- Full-Name Basis: How Santa refers to everyone.
- Split-Personality Takeover: Santa's personality reflects the prevailing mythology about him, of which the jolly and benevolent "Santa Claus" is only the most current. Since there have been many different versions of the myth throughout the ages, he's had many different personalities... which he switches between unpredictably without his talisman to stabilize him.
- Third-Person Person: Santa does this. Eve finds it annoying. And it's a VERY bad thing when he stops.
Morgan le Fay
The most powerful sorceress in the world.
- The Bad Guy Wins: In the episode "And the Rule of Three". The LITs save the people she was going to kill, but she still got the magical power that she wanted.
- Evil Is Hammy: As soon as her true identity is revealed she turns up the ham Up to Eleven.
- Evil Redhead: This incarnation of Morgan is a redhead, and like most others she's definitely got the evil part down.
- Giggling Villain: Sent into a laughing fit when Eve punches and head-butts her, amused that she's been hit for the first time in centuries.
- Immune to Bullets: Shes long since figured magical countermeasures for them.Morgan: Please. If shooting me was an option, how do you think I would have survived the 19th century? When Tennyson became popular, it was a nightmare.
- Insistent Terminology: Prefers to be called a sorceress instead of witch because witch has too much gender baggage.
- Obfuscating Stupidity: When portraying the STEM fair sponsor.
- Really 700 Years Old: Shes been around since the days of Camelot.
- Smug Snake: Surprisingly for a centuries old all-powerful sorceress, she's quite arrogant and condescending, mocking Eve and Jenkins while playing them for chumps.
- Would Hurt a Child: Her plan in the episode "And the Rule of Three" wouldve resulted in the deaths of dozens of young people.
- Vain Sorceress: Unlike Jenkins and Dulaque, who are at least as old as her, she uses magic to keep herself young and beautiful despite being centuries old.
- You Fight Like a Cow: Said to Eve when she challenges Morgan to a fight in the realm between seconds: "Guardian, on your best day you might be able to muss up my hair. And you've already had your best day."
A devil (small "d") who makes Faustian Bargains.
- Achilles' Heel: He's an all-powerful demon who can grant you anything you ask for, as long as you sign his contract. However, he has one major weakness: he must grant whatever the signatory wishes for, even if it isn't in his best interest. Eve exploits this to defeat him.
- Brought Down to Normal: Courtesy of Eve Baird's wish.
- The Corrupter: Frequently suggests that he enjoys getting good, heroic people to sign his contracts. He remarked that Jenkins (a/k/a Sir Galahad) would be an amazing addition, and is very keen to get his "first Librarian". Fails to do this to Baird, whose wish is to tell "Sess" that she wishes he were a human being.
- Deal with the Devil: His Modus Operandi.
- Declaration of Protection: States that his contract will flawlessly protect whoever signs it.
- Devil in Plain Sight: Averted. As Jenkins points out, devils never appear in red tights with pitchforks, tails and horns. Instead, they appear as what you desire most.
- Double Take: Has one when Baird makes her wish. He is about to engage in some Evil Gloating, when he suddenly realizes exactly what it was that Baird said.
- Expy: As a nigh-omnipotent trickster played by John de Lancie, Sesselman definitely has a few shades of Q. Except Q isn't actually evil, despite doing a good impression of it at times.
- Faustian Bargain: Can offer you anything you want in exchange for your soul.
- Faux Affably Evil: He always seems to be polite and businesslike, except for a bit of Evil Gloating. However, he also seems to be very enthusiastic about the death and destruction his contracts will cause.
- Karma Houdini: Played with. He's never arrested or brought to any sort of Justice for killing the girl at the beginning of the episode, but he is Brought Down to Normal, and that might be a far worse fate for him. Also, possibly justified, as he may not have killed the girl directly, and it may only have been the magic of the contract at work.
- Hoist by His Own Petard: Told Baird she'd have to make a wish to undo the previous contract. She does.
- Magic A Is Magic A: It isn't enough to sign your name to the contract and try to run out the clock. If you do not make a wish on Sesselman's contract, the original terms for the previous signatory will remain in effect.
- My Grandson Myself: How Sesselman has stayed in business. He just changes his given name and keeps the same surname.
- My Name Is Not Durwood: Really hates it when anyone, particularly Baird, calls him "Sess".
- Your Soul Is Mine: Par for the course. It's also said that he feeds on the misery and suffering caused to others by the wish.
The Egyptian God of Chaos.
- Ancient Evil: Has been around since the time of the Ancient Egyptians.
- Big Bad: Of Season 3.
- Conflict Ball: Has the power to make people turn on each other by using this.
- Demonic Possession: His M.O..
- God of Evil: Technically of chaos.
- Hoist by His Own Petard: Was made into a human and sacrificed to the Eye of Ra by the Love Potion he created.
- Sealed Evil in a Can: Was sealed in a sarcophagus but got out. The sarcophagus is now in the hands of the incompetent D.O.S.A.