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This is the character sheet for Odd Squad.

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    Agents in General
The main agents of Odd Squad across all three seasons.
Not pictured: Agent Osmerelda Kim and the Little O.
Members of Odd Squad, the organization founded to stop oddness. Every employee is a child.

  • Action Duo: The Investigation agents are teamed up.
  • Badass Adorable: They are very good at their jobs and are very precious.
  • Badass in a Nice Suit: Most Investigation and Management agents wear suits.
  • Bunny-Ears Lawyer: The characters are very quirky, yet all competent.
  • Chaotic Good: More than a bit weird in personality, organization, and techniques, but are definitely good people tying to stop odd and help others.
  • Crippling Overspecialization: While skilled at fighting oddness in the field, many Investigation agents have a lack of skill in other areas covered by different departments, such as Maintenance/Transportation and Science.
  • Hero of Another Story: While the only characters to really get focus on their cases are the main characters, episodes pop up here and there to show what the other agents work on.
  • Kid Detective: Well, they're all kids, and must do some detective work in order to stop oddness.
  • Little Miss Badass: Most female agents are this to some extent.
  • Grade-School C.E.O.: All precincts are run by a Director in the Management position. How young they are can range from infancy up to the age of 12.
  • Platonic Boy/Girl Heroes: Basically every set of partners that are the opposite gender.
  • Red Is Heroic: The main characters, the Investigation department, are associated with red.
  • Riddle for the Ages: The series intentionally leaves it a mystery as to whatever happened to the agents' parents and what their home lives are like.
  • Teen Superspy: Preteen, but close enough. They aren't exactly spies, but they are agents who solve mysteries/crimes.
  • Theme Naming: Every agent's name begins with the letter 'O'. The only exception ended up a villain after his Face–Heel Turn.
  • True Companions: They are pretty much all best friends and are always there for each other.
  • Workaholic: They are rarely ever seen not working.

    Season One 


Agent Oprah/Ms. O
Click to see her as the Big O. 

Played by: Millie Davis

Ms. O, formerly Agent Oprah, is the head of Precinct 13579. She delivers cases to agents who then go on their way to solve them. She is tough, grumpy, short-tempered, and easily angered, but she will always lend a helping hand to those agents who struggle. She used to have Agent O'Donahue for a partner before he officially retired. In the Season 2 finale, she gets promoted to the Big O.

  • The Ace: Really, there's little to nothing that this girl can't do.
  • Affection-Hating Kid: In the beginning of Season 1, Ms. O never gave any affection to her agents due to being a Bad Boss, to the point where, in "Reindeer Games", she had to be instructed by Oscar how to act, and ended up being awkward at every attempt she makes. She becomes more affectionate in Season 2 onward.
    Octavia: (as papers fly everywhere) Ah! What did I do? Am I fired?! I’ll pack my things.
    Ms. O: No, I just came by to say I, um, uh...uhh, think you’re great! (gives an awkward smile)
  • The Ageless:
    • She worked a fruit stand before joining Odd Squad back in the year 1870, and still looks 7 years old.
    • "Odd Beginnings: Part 2" reveals that she can control whether she ages or not.
  • Ageless Birthday Episode: It's Ms. O's birthday in "O is Not for Old", but her age is never revealed. Considering she can control her aging, though, it's likely that she just decided not to age up a year and stay the same age.
  • The Alcoholic: Though G-rated, her thing for juiceboxes is treated this way.
  • Alternate Self: As revealed in "Ms. O Uh Oh", Ms. O has one that came from the past (specifically, December 17). In "Ms. O Uh-Oh", as a result of it coming to life, she's driven out of her office due to the looming threat of a timetastrophe if the two Ms. O's happen to see each other.
  • Beehive Hairdo: In "Whatever Happened to Agent Oz?", the black hole Oz accidentally creates manages to make Ms. O's hair like this, loosening the tight bun she usually wears.
  • Big Eater: She drinks a thousand juice boxes as her daily rations, but cuts back to one hundred by Season 2. Her Mirror Self has just as big of an appetite, only she eats large portions of food (specifically, egg salad) rather than drinks.
  • Black Boss Lady: Is the leader of Precinct 13579 (later Odd Squad as a whole), and is dark-skinned.
  • Character Development: Over time, she went from a Mean Boss who often yelled at her agents and had a short temper to a Benevolent Boss who was more supportive of her agents and often helped them out. This was largely in part due to critics who often complained about her yelling and her overall attitude, despite the fact that as a character, she is meant to parallel real-life bosses. In the Season 2 premiere, she delivers a Take That! to said critics.
    Ms. O: If you're always yelling, that's all people think you do, and they don't see that there's a lot more to your character.
  • Clueless Boss: In "Life of O'Brian", Ms. O never hears about the bullying going on with O'Brian and the other agents. Justified, as Olive was explicitly told that telling Ms. O about the issue would lead to disastrous consequences from O'Brian.
  • Competition Freak: Ms. O becomes one in "The Jackies", as she sends all of her Investigation agents onto the field in order to seek out and eliminate oddness. It's justified by the fact that her precinct hasn't won a Jackie Award in millennia.
  • Compressed Vice: Ms. O becomes quite narcissistic in "Flatastrophe". She has a cube with her favorite "memories" on it, which is mainly comprised of her various face expressions, and when Otto takes her jackalope artwork, she complains that she has nothing beautiful to look at before looking at herself in the mirror. While Ms. O has been known to be selfish before, she's primarily portrayed as being a Jerk with a Heart of Gold who is tough but fair on her agents, and rarely displays any "It's All About Me" traits.
  • Everyone Calls Him "Barkeep": She is almost always referred to as "Ms. O", which is a title used for female Odd Squad Directors. Only few have referred to her by her first name, such as O'Donahue, Oscar, and Orville, and it's implied that only those close to her (professionally or personally) can refer to her as "Oprah". In Season 3, she is referred to as "Big O" or "The Big O", which is the title of someone in the position of the same name.
  • Extreme Omnivore: In "Agent Obfusco", Ms. O eats Olive and Otto's badges to check if they're expired. However, the badges also double as phones, meaning she basically ate part of a cell phone.
  • Fangirl: Of the boy band Soundcheck.
  • Grade-School C.E.O.: Like everyone else in Precinct 13579, she is of elementary school age, but she runs the precinct.
  • Greed: Ms. O has a juice bar in her office that is only for her. Anyone that lays a finger on it or its contents is liable to receive a No-Holds-Barred Beatdown.
  • Heroes Fight Barehanded: In "Oscar and the Oscarbots", it's implied that Ms. O took out a bear with nothing but her bare hands and her martial arts skills.
  • Hidden Depths:
    • She's a skilled piano player.
    • Ms. O is a surprisingly apt mechanic, having repaired a car's carburetor, timing belt, and pistons.
  • I Need a Freaking Drink: She is notorious for her love of juiceboxes and noticeably gets irritated when she goes without them. It is often likened to alcohol addiction:
    O'Donahue: Still on the juice, huh?
  • Lady in Red: Ms. O wears an elegant, sequined red dress in "The Jackies".
  • Jerk with a Heart of Gold: Most definitely so. She can be harsh, but means well.
  • Kung-Fu Kid: Ms. O is one, being strong enough to break multiple cinder blocks and take down a bear. In "Oscar and the Oscarbots", it's implied that she trains often at a dojo situated inside Precinct 13579.
  • Little Bit Beastly: Part of Ms. O's transformation in "The Odd Antidote" includes a lion's tail and a pair of antennae.
  • Little Miss Badass: Do not challenge her. You will lose.
  • Mean Boss/Benevolent Boss: Used to be the first, but gradually turned into the second.
  • Mirror Self: In "O is For Opposite", she accidentally releases her reflection from a Magic Mirror and becomes trapped in the mirror in their place. Her reflection is overly sweet to Tastes Like Diabetes levels, gives her agents Affectionate Nicknames, and despises juice boxes.
  • Named After Somebody Famous: Obviously Oprah Winfrey. Her old partner O'Donahue is this too (Phil Donahue being someone who works with Oprah).
  • No Indoor Voice: Tends to yell a lot. By the second season, she tones it down.
  • Not Quite Flight: She is capable of gliding by using wing flaps on her suit.
  • Not So Above It All: Like Otto, Ms. O loves Soundcheck's music and gushes over it.
  • Older Than They Look: She is 231 years old, but still looks like a child.
  • One-Letter Name: Only known as Ms. O. Justified, as "Ms. O" is the title given to any female Director.
  • One-Woman Army: She's shown to be capable of taking down monsters and armies single-handedly.
  • Pintsized Powerhouse: She's so strong she can cut an orange cleanly in half.
  • Purely Aesthetic Glasses: Ms. O has a pair of reading glasses that she is seen wearing twice in "How to Interrogate a Unicorn", but hasn't worn them at any point beforehand, which would imply that they are simply for show.
  • Purple Is Powerful: She's the leader of the precinct, far and away the strongest of the cast, and she and her department are signified by purple.
  • Rank Up: She gets promoted to the Big O in the Season 2 finale.
  • Really 700 Years Old: She is over 200 years old, and has the ability to control her aging.
  • Reasonable Authority Figure: Beneath all that yelling, at least.
  • Significant Birth Date: Her birthday is on November 30, 4 days after the initial premiere of the series.
  • Suddenly Bilingual: According to her interview video, she knows at least 45 different languages by the time she starts up the Odd Squad Mobile Unit. However, she never speaks any other language in the show proper.
  • Tiny Tyrannical Girl: Yells at everyone, and is one of the shortest in the cast. Becomes downplayed in Season 2 onward as she becomes a Reasonable Authority Figure and tones it down. And gets taller to boot.
  • Took a Level in Kindness: Her yelling roles became less and less starting in the second half of Season 1, and she became more supportive with the agents. This is lampshaded in the Season 2 premiere and functions as a Take That! to critics who hated her due to her constant yelling.
  • Trademark Favorite Food: Loves juice boxes so much she can be bribed with them.
  • Villain in a White Suit: Inverted — as the Big O, she wears a predominantly white suit, but isn't a villain.
  • Walking Spoiler: She becomes this post-Season 2, when she becomes the new Big O.
  • Winged Humanoid: In "The Odd Antidote", Ms. O gradually turns into one, but doesn't use the wings for flight.
  • Wolverine Publicity: She is the only character to appear in most, if not all, promos for the show across all three seasons, and as such, generally serves as the face of the show. This is justified, however, as most of the core cast switches out every season while she stays behind.

Agent Olive

Played by: Dalila Bela, Isabela Moner (pilot)
Click to see her in the pilot. 
Click to see her as an Odd Squad Director. 
A 12-year-old veteran agent of Odd Squad. She used to have another partner before she had Otto; it was unclear whom until "Training Day". Despite being no-nonsense, serious, and often full of snark, she has a soft, caring heart.

  • Absurd Phobia: She is not a fan of pies. This is justified, as she has a good reason. One OddTube episode reveals that she's attempting to get over the fear.
  • The Ace: She is exceptionally good at what she does to the point that she is idolized by other agents and is known among them for her work.
  • Affection-Hating Kid: Zig-zagged. She doesn't take too kindly to Ms. O (or whom she thinks is Ms. O, anyway) pinching her cheeks in "The Briefcase", but is fine with giving people hugs and other forms of affection. Similarly, she also hates being called "cute" and other endearing terms.
  • Ambiguous Disorder: Olive shows quite a few symptoms of PTSD and trauma, which stems from her experiences in dealing with her old partner and fighting off the pienado that he released in her own workplace. When she is forced to interact with pie in any capacity, she screams in terror and often cowers behind Otto, and it's implied in a few episodes that she also has sensitive hearing. The OddTube episode "Interview with Olive" also has her explaining how she's getting over her fear of pie by focusing on tarts, a smaller pastry. Whether she was intentionally written to have PTSD or trauma symptoms is unknown.
  • Character Development: Throughout Season 1, Olive begins to loosen up and learns to not take things so seriously. She also begins healing from the trauma she experienced fighting off Odd Todd's pienado starting in Season 2.
  • Cloudcuckoolander's Minder: She often keeps the energetic Otto in line.
  • Does Not Like Spam: Dislikes pies. She has a very good reason.
    • Also hates the egg salad pizza combination that Delivery Debbie and Delivery Doug come up with, to the point that eating just one bite makes her feel nauseated.
  • Dreadful Musician: Averted. Albeit she doesn't get to sing much, Olive is quite the proficient vocalist.
  • Fangirl: She loves sports, Coach Roberts, Santa Claus, and Shmumberman. Her seriousness immediately drops whenever she interacts with them.
  • Gamer Chick: She slowly becomes one in "Game Time" through practice playing Robo-Blast-Bots at the Shmumbercade in order to rescue Otto.
  • Grade-School C.E.O.: Becomes this in the Season 1 finale alongside Otto. After the events of The Movie, she goes back to leading her precinct.
  • Hidden Depths:
    • She is a frequent patron of Club 24 and is quite friendly with Tony the Bouncer — quite surprising, considering that part of what we see of the nightclub is a long line of adults who are nowhere near her age.
    • While she is initially shown to hate Soundcheck in contrast to her partner, she eventually comes to like them by "Disorder in the Court", having attended one of their concerts. The Movie would later establish that she has a love/hate relationship with the band. "Soundcheck Part Deux" would also confirm that she hates the music genre of pop, not just Soundcheck.
    • "Life of O'Brian" reveals that Olive knows quite a lot about laser chickens. Not so much about their eggs, though...
    • She also knows how to operate the tubes, despite working in the Investigation department and having never worked in the Maintenance/Transportation department.
    • As shown in "Fistful of Fruit Juice", she loves cleaning, and states that she loves when dust gets in her eyes and makes her throat burn.
    • While she is well-known for her athleticism, in "Trials and Tubulations", she has a conversation with Otto about enjoying walking as a form of exercise, encouraging him to take it up by suggesting he start using walking sticks.
    • "Oscar the Couch" implies that she's quite skilled at hypnotizing people, but not so skilled at snapping people out of hypnotism.
    • Numerous episodes, as well as The Movie, reveal that she is both a Badass Driver and an Ace Pilot — she can not only drive kiddie cars and makeshift carts, but can also pilot an ice-cream-truck spaceship with ease.
  • Huge Guy, Tiny Girl: She is shorter than Otto in the show, but in the original pilot, it's the inverse, with her being the taller one.
  • Jerk with a Heart of Gold: While she can be harsh, she really does care for both Odd Squad and her clients.
  • Leader Wannabe: Her goal is to become an Odd Squad Director in the same vein as Ms. O. While "The O Games" showed her becoming one for a day as a prize for winning the eponymous competition, she eventually succeeds in becoming an actual Director in the Season 1 finale, being transferred and promoted to the precinct in the next town over in place of Orville.
  • Little Miss Badass: One of Odd Squad's best agents who can also hold her own in a fight.
  • Little Miss Snarker: Being a Deadpan Snarker comes with being the Only Sane Man. A lot of her reactions to things are full of snark.
  • Mama Bear: Can act this way towards Otto at times, such as when fretting over leaving him in Headquarters alone while she heads out for her day off in "Captain Fun".
  • Mr. Vice Guy: One of Olive's vices is her tendency to become smug and cocky if she believes that she's correct or if she thinks that something will go well. More often than not, it will backfire on her.
  • Neat Freak: Implied in episodes such as "Trials and Tubulations", where she isn't necessarily thrilled about covering herself in mud to avoid laser chickens' detection, but does so anyway (and ends up less dirty than Otto).
  • Only Sane Man: Oscar and Otto are easily flappable, and so she often takes this position.
  • Passionate Sports Girl: In most sports — you name it, she loves it.
  • Platonic Boy/Girl Heroes: With Otto.
  • Plucky Girl: Borders on Determinator.
  • Put on a Bus: Leaves in the first season finale to be a Director for another precinct. Dalila Bela would later have a voice-only cameo in an OddTube episode and star in The Movie before officially departing from the show.
  • Rank Up: Is promoted to the Management department and becomes an Odd Squad Director of a neighboring precinct in the Season 1 finale, along with Otto.
  • Regal Ringlets: Her hair is tied in a loose corkscrew ponytail. Unlike most examples, however, she isn't royalty, nor does she act regal.
  • Rookie Male, Experienced Female: Olive has been an agent much longer than Otto has.
  • Savvy Guy, Energetic Girl: Gender Flipped here. Olive is the experienced and calm one to Otto's new and energetic.
  • Shell-Shocked Veteran: She becomes this after the pienado.
  • Shrinking Violet: She was shy as an agent-in-training and had a huge lack of self-confidence. The shyness stuck around when she became an agent, but was dropped entirely when her old partner attacked.
  • Textile Work Is Feminine: While it's not shown onscreen, Olive is quite the skilled seamstress, having sewed multiple Burly Bears uniforms.
  • Tomboy: Very much so. She would rather wear pants than a skirt even if the latter is mandated in her department's dress code, she despises princesses, and enjoys sports and reading comic books.
  • Trademark Favorite Food: The OddTube episode "Interview with Olive" reveals that as an Odd Squad Director, her signature drink is water, which fits with her "plain" food preferences (such as cupcakes with no frosting).
  • True Companions: With Otto.
  • Why Did It Have to Be Pie?: Heavily emphasized in "The Briefcase" and explained in "Training Day".

Agent Otto

Played by: Filip Geljo, Jaden Michael (pilot)
Click to see him in the pilot. 
Click to see him as an Odd Squad Director. 

A 10-year-old new recruit of Odd Squad. Otto is fascinated by everything that goes on around him and often wants to learn more about the inner workings of his workplace. In spite of his insatiable appetite and his wild eccentricity, he and Olive have a strong friendship bond and make a perfect team.

  • Ascended Fanboy: He's a huge fan of Soundcheck. Not only does he get to meet them on multiple occasions, but he also gets to sing with them.
  • Beware the Nice Ones: While he never hits his Rage Breaking Point, he can get close, especially if Olive is in danger.
  • Big Eater: Oh yes. You name it, he eats it. And he's got the appetite to match.
  • Character Development: He starts to become more serious and experienced as Season 1 progresses, and by "Robert Plant", he becomes confident and skilled enough to tackle oddness solo without Olive's aid.
  • Cloudcuckoolander: Of the four main characters, he's definitely the least grounded, but compared to some of the secondary characters he seems quite well adjusted by comparison.
  • Desperately Looking for a Purpose in Life: Otto changes his potential future careers on the daily, going from Olympic speed skater to tornado chaser to magician. It doesn't seem to bother him in the slightest.
  • Determinator: Oftentimes, he averts this trope, becoming pessimistic and losing hope whenever something odd happens or he hits a snag in a case. However, Olive is usually the one to set him right again.
  • Does Not Like Spam: Like Olive, he doesn't enjoy eating Delivery Doug and Delivery Debbie's egg salad pizza combination — he has trouble even trying to fit a bite into his mouth.
  • Fake Defector: He pretends to turn to Odd Todd's side in the Season 1 finale, with his first act of oddness being to open all the doors in Headquarters and let creatures run loose. However, he simply plays along to the villain's whims in order to truly defeat him once and for all.
  • Grade-School C.E.O.: Becomes this in the Season 1 finale alongside Olive. After the events of The Movie, he goes back to leading his precinct.
  • Hidden Depths:
    • "Robert Plant" shows him operating the tubes' main computer just like his partner can, despite having never worked in Maintenance/Transportation.
    • While he loves Soundcheck, a boy band known for their many cheesy love songs, "Mystic Egg Pizza" implies that he loves Silly Love Songs in general, as he grows to like Delivery Doug's song.
    • He is shown to admire hypnotism in "Oscar the Couch", and like Olive, he is easily able to put someone into a trance by following Oscar's instructions of clapping twice and saying "couch alert". However, he has a better grip on the skill than his partner — not only does he learn to clap twice more if he wishes for the hypnotized person to repeat what they said, but he easily masters Olive's method of snapping someone out of a trance despite having never been told it.
    • Numerous episodes show that he's no jock, and is terrible at sports. About the only thing he can do sport-wise is skillfully dribble a basketball. This is in contrast to Olive, who is a Passionate Sports Girl and can play most any sport.
  • Huge Guy, Tiny Girl: Otto towers over nearly every single girl in the main cast, including Olive. In the original pilot for the show, the heights are inverted, with him being shorter than Olive.
  • Nice Guy: He is generally nice towards everyone, barring villains.
  • Not So Similar: Averted. Odd Todd sees him as a "new Todd" and nothing more than a replacement for him. Otto is quick to retaliate by telling him that he'll never be like him and that he'll be a "regular me".
  • Obsessed with Food: Goes hand-in-hand with his Big Eater status. He'll often be distracted by food while on a case.
  • The Pig-Pen: While it's more of a subtle trait, a couple episodes have shown that Otto isn't the neatest agent at Precinct 13579. "Trials and Tubulations" shows him eagerly slathering himself in mud at Ms. O's discretion, and "O vs. The Ballcano" reveals that he has a good six years' worth of junk in his locker despite working at Odd Squad for less than a year.
  • Platonic Boy/Girl Heroes: With Olive.
  • Purely Aesthetic Glasses: He's seen wearing a pair of glasses in "Oscar the Couch", which Orchid (somehow) puts back on his face, but he isn't visually impaired in any manner and doesn't normally wear any kind of glasses.
  • Put on a Bus: Leaves with Olive to be a Director for another precinct in the Season 1 finale. Filip Geljo would later go on to star in The Movie before officially departing from the show along with Dalila Bela.
  • Rank Up: Is promoted to the Management department and becomes an Odd Squad Director of a neighboring precinct in the Season 1 finale, along with Olive.
  • Read the Freaking Manual: He hasn't read his Odd Squad Training Manual due to the fact that he runs on instinct. Immediately after he tells Olive this, he ends up colliding with a door. This is contrasted with Olive, who is presumed to have had read her manual.
  • Real Men Wear Pink: In "Rise of the Hydraclops", he grows attached to Oscar's teddy bear, Norman, when the Scientist uses it as a ruler — so attached, in fact, that he's willing to abandon food just to play with the toy and never lets go of it up until he's ordered to take his shoes off by Oscar at the end of the episode.
  • Rookie Male, Experienced Female: Otto is new to the Squad while Olive has already had a former partner.
  • Savvy Guy, Energetic Girl: Gender Flipped here. Olive is the experienced and calm one to Otto's new and energetic.
  • Stalker Shrine: Otto has one in the form of an entire room, dedicated to the four band members of Soundcheck and plastered in everything from shirts to photos to posters. However, instead of being appalled, Danny T is in sheer awe when he is first introduced to it.
  • Sitcom Arch-Nemesis: He has an implied bad history with Orchid and often talks to her as though she's a toddler, which isn't helped by her Bratty Half-Pint attitude and The Dreaded status among agents.
  • Supreme Chef: While not displayed in-show, the episode "The Confalones" reveals that he makes good meatballs.
  • True Companions: With Olive.
  • The Watson: As a new recruit, he's usually the one who asks when something needs to be explained.

Agent Oscar
Played by: Sean Michael Kyer

The head scientist of Precinct 13579's lab. Goofy and nerdy, he has a gadget for almost everything. He takes care of his gadgets, and he always greets others with "Hey guys!" He is renowned for creating addable gadgets and for starting the first Odd Squad lab.

  • Absent-Minded Professor: Genius, but can be a bit forgetful.
  • Beleaguered Assistant: Serves as one to Ms. O in some episodes, often carrying out her orders to fetch her a juice box or make dresses for her. His assistant role is more prominent in the pilot.
  • Character Development: Throughout Seasons 1 and 2, he goes from being a timid, awkward scientist who would prefer staying in the lab than going out onto the field to a complete badass who manages to fend off a swarm of hypnotized scientists using the seventeen lab coats he wears. It's topped off by his promotion to President of the Scientists in "Oscar Strikes Back".
  • Compressed Vice: "Odd Squad Needs You" shows him being terrified of Ms. O, to the point where he has a bunker set up in his lab for him and Oona to hide in. This is despite the fact that numerous past episodes have shown that, while he is often startled by her actions and frequent yelling, he isn't outright afraid of her.
  • Crippling Overspecialization: While he is proficient in building and fixing gadgets, he does not fare well in other positions. This is evidenced by him being fired from over sixty jobs at Precinct 13579, either due to his inexperience or due to his ditzy but timid nature. Because of this flaw, Ms. O creates the Science position just for him so he can put his skills to good use without having to leave Odd Squad.
  • Gadgeteer Genius: He makes various gadgets for the Odd Squad agents. Though making gadgets is a thing every scientist does, he's special for the fact he created addable gadgets, a very important tool in Odd Squad. In addition, the Science position as a whole was created for him to put his skills to good use, which spurred other precincts to start their own labs.
  • Genius Ditz: He's very smart, but can be a bit awkward.
  • Hairstyle Inertia: Averted. Oscar alternates between two hairstyles throughout the show (which is a result of episodes and other side material being filmed at different times), something that "Best Seats in the House" provides an in-universe explanation for. "The Curious Case of Pirate-itis" also reveals that he's gone through six different hairstyles, all of which were copied from Odie, another Scientist.
  • Hidden Depths:
    • In "Invasion of the Body Switchers", Oscar becomes stuck in Ms. O's body right before she's set to take her O Test. At one point, he remarks how, if she gets fired, he'll ruin her life. Whether that means he's a heroic Starscream, he's taking advantage of Ms. O's strength, or if he's even being genuine is completely up for interpretation.
    • He is shown to be quite the skilled hypnotist in "Oscar the Couch".
    • "There Might Be Dragons" gives him a chance to show off his electrical skills, managing to restore power to Headquarters despite it taking longer than intended.
  • "I Am Great!" Song: "Oscar is Awesome" is Exactly What It Says on the Tin: it's a boastful song about how awesome and badass Oscar is.
  • The Klutz: Boy howdy, is he ever.
  • Labcoat of Science and Medicine: A trademark of his department.
  • Let's Get Dangerous!: Despite his timid, ditzy nature, he's quite proficient in fighting oddness. He even manages to beat Odd Todd — one of the toughest villains of the series — in a 1-on-1 fight using magnets on a handmade vest and a bag full of tomatoes.
  • Mad Scientist: While he's not evil, a lot of problems occur due to one of his inventions going wrong.
  • Mentor Archetype: He becomes a mentor to Oona in Season 2, teaching her the ins and outs of the Science department before his departure in "Oscar Strikes Back".
  • Nerd Glasses: Sports a pair of these that he's often seen adjusting.
  • Put on a Bus: Leaves Precinct 13579 to become President of the Scientists at the Odd Squad Academy's Science building in Season 2.
  • Rank Up: He is promoted to the position of President of the Scientists in "Oscar Strikes Back", and leaves Precinct 13579 to work in the Science building on the campus of the Odd Squad Academy.
  • Real Men Wear Pink: In "Rise of the Hydraclops", he is revealed to have a Security Blanket in the form of a stuffed teddy bear named Norman, which he uses as a ruler to find his way to the secret weapon he has buried.
  • Say My Name: It's a Running Gag in Season 1 for someone to scream his name, usually in a frustrated manner and usually when he gets off-track.
  • Selfie Fiend: In "Picture Day", he not only treats photography as Serious Business, he spends at least nine hours taking selfies of himself and completely forgets about going out to eat with Olive and Otto.
  • Smart People Build Robots: He builds 25 Oscarbots that look nearly identical to him in order to build Ms. O the perfect juice box. They look and act so humanoid that Olive has to ask in sheer disbelief if he cloned himself upon watching them all gather together in the bullpen.
  • Teen Genius: See Gadgeteer Genius.
    • A sidenote: he ages further in the Season 2 premiere, due to his actor aging in real time. In-universe, this is due to an aging gadget going off.
    Ms. O: Something's different about you.
    Oscar: Oh yeah. This Make-You-Older-inator went off. I like the new voice, though.
  • Textile Work Is Feminine: Inverted — Oscar is shown to be quite the capable tailor, and can make quite a lot of clothing in a short span of time.

    Season Two 

Agent Olympia
Played by: Anna Cathcart

Otto's replacement and one of the main characters of the second season.

  • Beware the Nice Ones: Sure, Olympia's a Genki Girl, but she's not afraid to show her mean side.
  • Character Blog: Olympia hosted the first season of OddTube, a 20-episode vlog. She passes the torch to Orla for the second season.
  • Contrasting Sequel Main Character: While only a new cast for a new season, this still applies as Otis and Olympia have the exact opposite dynamic as Olive and Otto, save for Olympia being the one who's the protocol fiend and the chipper bouncy one while the more reserved Otis is frequently sighing in irritation at her antics.
  • Crippling Overspecialization: Olympia may be hard-working and skilled while solving cases as an Investigation agent, but put her in the Maintenance position and she becomes very overwhelmed very quickly.
  • Cute, but Cacophonic: Make no mistake — when Olympia screams or shouts, it's loud.
  • Dreadful Musician: Averted. Not only does she have strong vocals, but can also play instruments such as a ukulele and a keyboard.
  • Genki Girl: Olympia is very enthusiastic and full of energy.
  • Fangirl: Olympia's one of Otto and Olive, and freaks out every time she gets to meet them.
  • Fatal Flaw: Her lack of belief in villains making Heel-Face Turns. It bites her in the butt big time in the Season 2 finale upon finding out that Otis was a former villain, as he and Ms. O get fired from Odd Squad as a result.
    • By far her biggest flaw is her obsession with work. She will often overwork herself with the overall goal of being the best agent Odd Squad as an organization has ever seen, as well as wanting to impress others such as Olive and Ms. O, refusing to relax or take a vacation until Ms. O herself forces her to as per an existing rule — to such an extent that once she gets going, she becomes physically unable to stop herself. However, her Workaholic tendencies often get in the way of anything not involving work, such as having lunch with Otis.
    • Her other big flaw is her drive for perfectionism, which goes hand-in-hand with her aforementioned Workaholic flaw. Even for something as casual as a party for a departing co-worker, she strives for perfection in nearly everything she does, and if someone tells her that she's not perfect at something she does, she will go to incredible lengths to hunt them down and confront them with nary another thought. Her desire to be a perfect agent has caused trouble for her co-workers on more than one occasion, especially Otis, who often reminds her that she doesn't need to be perfect and that failing at something is normal and acceptable to do.
    • She is physically unable to say "no", which causes her issues in "Olympia's Day" when Ms. O opens up a room for her and the Noisemaker to talk things out in. Dr. O and Ocean both catch on to the opening and ask Olympia to stay in the room, and it gets progressively worse from there as more agents get wind of the new room due to Olympia accidentally letting it slip. It gets to a point where, after cramming 16 agents into the room, she goes through massive Sanity Slippage and ends up hallucinating before passing out (an occurrence known as "slipping into mathness").
  • Foil: To Ohlm. Both of them were excellent students at the Odd Squad Academy. But while Olympia was happy to just be an agent, Ohlm wanted to become the Big O immediately. This resulted in him plotting to take over Odd Squad.
  • Hidden Depths: If the Cold Open of "License to Science" is any indication, Olympia knows how to play football pretty well and can hold her own against three football players dressed in uniform.
    • "There's No O in O-bot" reveals that she's taking piano lessons, and is skilled enough to be able to read sheet music.
    • In "New Jacket Required", she's able to tell that Otis is wearing a new jacket by noting tiny details such as stitches and lapel size.
  • The Knights Who Say "Squee!": She is a big fan of Olive and Otto as well as their work, and idolizes them to incredible degrees. When she meets them in-person for the first time in The Movie, she becomes so starstruck that she can't form a coherent sentence.
    • She also idolizes Orla, albeit to a far lesser extent, complimenting her on her Spock Speak and her many adventures with the Mobile Unit.
  • Meganekko: Olympia's cute and a glasses wearer.
  • Motor Mouth: She talks a lot, and isn't afraid to weaponize it if need be.
  • Nice Girl: She's very sweet and kind.
  • The Perfectionist: Holy moly, is she ever.
  • Reformed, but Rejected: Her Fatal Flaw. She believes in "once a villain, always a villain", and doesn't think that villains that have genuinely reformed can change for the better. She gets better by the end of Season 2.
  • Savvy Guy, Energetic Girl: Olympia is a Genki Girl while Otis is more reserved.
  • Platonic Boy/Girl Heroes: With Otis.
  • Plucky Girl: Like her predecessor, Olive, Olympia tries hard and is a diligent agent.
  • True Companions: Best friends with Otis.
  • Workaholic: And how.

Agent Otis
Played by Isaac Kragten

Olive's replacement and one of the main characters of the second season. He came from... somewhere. Like Olympia, he is introduced in the second season premiere.

  • Absurd Phobia: Otis is not a fan of ducks. He thinks it's his old family coming for him.
  • All-Loving Hero: He's a friendly agent in the Squad and he always sees the good in people no matter how evil they are.
  • The Cast Showoff: Kragten is a professional dancer, and Otis is shown dancing more than once in the series.
  • Crippling Overspecialization: Like Olympia, he is skilled on the field, but can't handle the consistent workflow that the Maintenance position in particular has.
  • Dark Secret: He used to be a villain.
  • Flight: Is revealed to be able to fly in the Season 2 finale.
  • Heel–Face Turn: Is revealed to be the White Sheep of a villainous duck family.
  • Hidden Depths: Season 2 reveals quite a few hidden things about Otis.
    • "A Job Well Undone" implies that Otis has a talent for face-painting, as he draws a cat on Hopkins' face at the birthday party.
    • In the Cold Open of "Rookie Night", he delivers some kind words to a plant with an attitude issue and acts very much in the vein of a therapist for it. Later on, he reveals that he automatically denies any chance to try new experiences, doing so when offered to go skydiving for the eponymous event before changing his tune when he learns what skydiving is.
    • The ending of "Sir" reveals that Otis is a good chef, in contrast to those like Olympia, who can't even bake a cake by following a recipe.
    • Another contrast Otis has with Olympia is his hidden disdain for talent shows, as revealed in "Agent Orchid's Almost Half-Hour Talent Show".
    • In "The Ninja Situation", Otis shows off just how skilled he is in battle. His agility allows him to dodge most of the Evil Ninja's attacks.
    • Like Olympia, Otis also displays some skill in playing football in the Cold Open of "License to Science".
    • "There's No O in O-Bot" reveals that Otis is taking yoga classes at a hot yoga studio in town.
    • He enjoys eating oranges, and gets some as part of Joy LaFleur's deluxe track-and-field package in "Where There's a Wolf, There's a Way". In addition, "Back to the Past" reveals that he also loves hot dogs, and "Slow Day" reveals that he hates pickles, thinking of them as a "wet vegetable".
    • "Odd Squad Needs You" reveals that while Otis loves movies, he's not so skilled at making them.
    • In "Who is Agent Otis?", he demonstrates a knack for sewing, as he is shown putting together a blanket made out of duck feathers. He also may have a little Scientist blood in him, considering he built a translator voicebox for his duck family to use.
    • Just as Olympia is able to play a keyboard in "Show Me the Money", Otis is also able to play a saxophone.
    • While it's justified as Isaac Kragten is a professional dancer, "The Creature Whisperer" features Otis' dancing ability for the first time, as he does so in order to stall the presumed Big O.
    • A brief conversation with Olympia in "And Then They Were Puppies" reveals that Otis is Not a Morning Person, and while he can wake up easily, he often goes back to sleep once he does. There's some Fridge Brilliance to be found here — ducks often employ power naps to get sleep and sometimes sleep in rows (those at the end of rows are light sleepers). Since Otis is a human raised by ducks, this would explain his abnormal sleep habits.
    • In the OddTube episode "Otis Fills In", he dances to a Soundcheck song while the camera is still running, which implies that he may like the band and/or their music.
  • Mysterious Past: Like in Oscar's words, "Then where did he (Otis) come from?" Otis's past is the main mystery of the second season. It is hinted to have something to do with villains and is confirmed.
  • Raised by Wolves: He was raised by ducks.
  • Read the Freaking Manual: Otis has not read the Odd Squad handbook at all. This is contrasted with Olympia, who loves to get her hands on anything OS related.
  • Savvy Guy, Energetic Girl: As noted above, he is the Savvy Guy to Olympia's Energetic Girl.
  • Socially Awkward Hero: When he started off, Otis wasn't very good at communicating with others. He got better.
  • Supreme Chef: The end of "Sir" reveals that he is apparently quite the skilled cook.
  • Undying Loyalty: To Ms. O, after she helped him put an end to his duck family's Evil Plan and trained him herself to be an agent of Odd Squad.
  • Walking Spoiler: It's hard to talk about him without exposing his past.
  • White Sheep: Of his family of ducks. He didn't want to destroy the world, and subsequently left to join Odd Squad.

Agent Oona
Played by: Olivia Presti

Oscar's assistant and eventual replacement, becoming the head of the Science Department.

  • Absent-Minded Professor: Also quite smart, but occasionally forgets things and trails off.
  • The Apprentice: She serves as Oscar's assistant in Season 2 until "Oscar Strikes Back", where she takes over his position as Lab Director of Precinct 13579.
  • Beware the Nice Ones: Let's just say that pissing someone who's Cute and Psycho off is a very bad idea.
  • Big Damn Heroes: Saves the day in spectacular fashion in "Oscar Strikes Back."
  • Cute and Psycho: Oona is a Gadgeteer Genius who is nice to her co-workers and is loyal to Odd Squad through thick and thin. However, unlike her predecessor and mentor, Oscar, her mental health isn't in the best state, and she is often shown to be completely wacky and insane. Perhaps the best example of this is in the episode "The Cherry-on-Top-inator", where she becomes giddy from destroying useless gadgets with her trusty mallet, coupled with murderous screams.
  • First Day from Hell: Her first day on the job has her accidentally sending herself, Oscar, Olympia and Otis back in time and working together with them to prevent a timetastrophe.
  • Gadgeteer Genius: She is a scientist, hence this is her job.
  • Genius Ditz
  • Labcoat of Science and Medicine: A trademark of her department.
  • Mad Scientist: A bit nuts. She tends to go off a bit, like her calculator outburst in the movie or her gradual Sanity Slippage in "Cherry-On-Top-Inator."

    Other Agents 

Agents Oren and Olaf
Oren (left) and Olaf (right)
Played by: Brendan Heard (Oren) and Eshaan Buadwal (Olaf)
Two recurring supporting characters. They are often opponents of Otto and Olive.

  • Absurd Phobia: Oren seems to be scared of pancakes.
  • Blatant Lies: During a "Meet the Agents" sequence, Oren says that he's great at sharing (followed by a clip of him and Olaf fighting Olive and Otto over new office chairs) and that's he's a very hard worker (followed by a clip of him and Olaf lounging in the ball pit).
  • Catchphrase: For Olaf: "I'm Olaf!"
  • Cloudcuckoolander: Olaf is possibly the most odd-ball member of Odd Squad, which is saying something.
  • Hidden Depths: Olaf tends to be simple-minded, but can have surprising moments of genius. For example, in one episode, Otto keeps shrinking and Olive has to team up with Oren and Olaf to find a cure. Olaf proves to be the only one who knows the secret to reversing the shrinking, and his normally very limited vocabulary begins to approach Sesquipedalian Loquaciousness.
  • It's All About Me: Oren.
  • Noodle Incident: "If Ms. O offers to send you to Blobsylvania to count blobs, DO. NOT. GO." Subverted in that we get to see a clip of Oren and Olaf counting blobs.note 
  • Perpetual Smiler: Olaf is almost always happy and excited, which sometimes gets on Oren's nerves.
  • The Reveal: Olaf is a werewolf
  • Sitcom Arch-Nemesis: To Olive and Otto.
  • Those Two Guys: Agents who appear every so often to annoy our heroes.
  • Trademark Favorite Food: Olaf loves potatoes.
  • True Companions: Really do care for each other.

Agent Orchid
Played by: Michela Luci
One of the younger agents, she is sassy and particular.

Agents Octavia and Oz
Played by: Julia Lalonde (Octavia) and Carson Reaume (Oz)

Octavia, another agent, will appear here and there in Season One. She is not the smartest tool in the shed, but always tries to be helpful. Her partner, Oz, is only seen in flashbacks, and for good reason.

  • The Ditz: Agent Octavia. She doesn't always understand things.
  • Invisibility: Agent Oz, thanks to looking at a gadget the wrong way.
  • Nice Girl: Octavia is there to help, even if she doesn't know what's she's doing.

Agent Ohlm
Played by: Jaiden Cannatelli
Introduced in the first season finale. Quite dimwitted.
  • Bond Villain Stupidity: Ohlm was so focused on getting revenge on Odd Squad that he didn't stop to think about himself getting sucked into his own black hole. He could have used a getaway vehicle or something to escape his own doom.
  • Crouching Moron, Hidden Badass: While looking and acting dumb, he is still a good agent and succeeds in getting the remote for the Puppy Ray back.
  • Evil All Along: Revealed to have been plotting to take down Odd Squad since he started working here, because he wasn't made the Big O immediately upon graduating the Academy.
  • Foil: To Olympia. Both of them were excellent students at the Odd Squad Academy. But while Olympia was happy to just be an agent, Ohlm wanted to become the Big O immediately. This resulted in him plotting to take over Odd Squad.
  • Four Eyes, Zero Soul: When Ohlm reveals his true colors in the Season 2 finale, he puts on a pair of glasses.
  • Knight of Cerebus: Hey you know all those Affably Evil villains on the show who are rather good friends with the Squad? Well you're not going to find any of those traits in this child.
  • Last Episode, New Character: Season 1 ends with Ohlm being introduced as Otto's temporary new partner, and continues to appear throughout Season 2 as a recurring character.
  • Obfuscating Stupidity: He used his dumbness to hide his real plans to destroy Odd Squad.
  • Repetitive Name: His full name is Ohlm Ohlm.
  • Ungrateful Bastard: You'd think that Ohlm would have been grateful that the agents were willing to save his life after they found out his true colors, but no, he continues threatening to destroy the company after they closed his black hole and doesn't even thank them. Yeah, he had that grounding coming.
  • Walking Spoiler: He's been faking his ditziness to help villains to sabotage his precinct, so he could manipulate events to get Ms. O fired and destroy Odd Squad.
  • You Are Grounded!: Is grounded by his parents when defeated by Ms. O.

Agent Obfusco
Played by: Jaeden Noel
He's an expert on dealing with oddities and trains current agents. However, he talks in a weird way, which means it's hard for agents to understand him.

Dr. O
Played by: Peyton Kennedy
Obviously, the Doctor of Precinct 13579.
  • Always Introduces Themselves: A standard conversation with her will often start with “Hello I’m Dr. O, we work together at Odd Squad” “Yes I know who you are”. She has done this even to people she was talking to shortly before or should know well (like when she reminds Oscar of the time they went on a mission together).
  • Bizarre Taste in Food: Her favourite food is apparently unicorn tears.
  • Catchphrase: "Trust me, I'm a doctor".
    • Also "WHAT'S NEXT??".
  • Child Prodigy: While all agents of Odd Squad can count as this to various extents, Dr. O is a notable example due to her claim of having gone through eight years of medical school to become a doctor. While how and where she did this is not shown, the fact that The Movie shows her working in what appears to be a real hospital after Odd Squad is shut down indicates her qualifications are not only real but are also recognized by adults.
  • The Comically Serious: She is less prone to acting silly, and gets down to business. Her abrupt deadpan and straight face contrast with everyone else's behavior, making her funny.
  • I'm a Doctor, Not a Placeholder: Dr. O is always reminding everyone that she's a doctor.
  • Lab Coat Of Science And Medicine: Wears a labcoat over her Odd Squad medical uniform. Unlike the white labcoats of the scientists, hers is a light blue. Also, while all scientists are shown wearing their own labcoats, minor and background medical staff do not, suggesting the labcoat is specifically part of her position as the head Odd Squad doctor.
  • The Medic: Is the main Doctor of Precinct 13579 before being Put on a Bus in Season 2 (see below).
  • Put on a Bus: Departs for the Odd Squad Space Station in "Doctor O, Party Time, Excellent."
  • Super Doc: The only one at Precinct 13579, and knows how to treat both oddities and normal illnesses.
  • Trust Me, I'm an X: She says stuff like this often.

Agent Oksana
Played by: Madeleine Barbeau
The cook of the precinct. Is neither talkative nor emotional.

  • Absurdly Dedicated Worker: In The Movie, Odd Squad is shut down. However, Oscar and Ms. O discover that's she's still cooking and making food there.
  • The Comically Serious: Even more than Dr. O: her Emotionless Girl tendencies mixed with her sarcasm make her hilarious to viewers, though scary to her teammates.
  • Crazy-Prepared: Always keeps pudding on hand in case of a invisible dinosaur invasion. It was even in her video guide.
  • Creepy Monotone: Speaks in one.
  • Deadpan Snarker: Many of her lines are sarcastic, and she's actually deadpan.
  • Emotionless Girl: You'll get no reaction from her.
  • Jerk with a Heart of Gold: Makes unreasonable demands in "Agent Oksana's Kitchen Nightmares" (like multiple bars of gold), but it's eventually revealed that she needs the items to get the best food for the squad.
  • Team Chef: Until the events of "Dr. O No", she is the sole cook of #13579. Whether she is a Supreme Chef or Cordon Bleugh Chef is unknown, though evidence points to the former.

Played by: Elijah Sandiford
A new employee, he works with odd creatures. He's an expert at dealing with them and taking care of them.

  • Fluffy Tamer: His expertise extends to frightening animals, and cares for them as well.
  • Friend to All Living Things: He is very fond of creatures and will risk his life to give one the chance of survival.
  • Mellow Fellow: So laid-back it's amazing he doesn't slide out of his hammock onto the floor.
  • Nature Lover: Comes with his love of animals.
  • The Watson: Ends up having to ask the questions, such as in "A Case of the Sillies" where he needs to know about measurement quantities.

Played by: Tate Yap
Oprah's former partner who worked at Odd Squad until the 1980s, when he quit due to failure in solving a case. As of "Happy Halfiversary", he is unretired and works as an undercover Investigation agent for Oprah.

  • The Charmer: In "Totally Odd Squad", it's shown that he has no issue flirting with his boss. Unfortunately, any romantic feelings he has for her is completely one-sided on his end.
  • invoked Disabled Character, Disabled Actor: Played with. Tate Yap wears a hearing aid in real life, but it's never revealed whether O'Donahue has any sort of hearing impairment.
  • Enemy Mime: Becomes one as part of The Infiltration seen in "Behind Enemy Mimes".
  • First-Name Basis: He is one of the few who is allowed to call Oprah by just that: Oprah, instead of her job title, "Ms. O". This is due to the fact that they were partners, and so she has no issue with him referring to her as Oprah.
  • Hawaiian-Shirted Tourist: He often is shown wearing a blue Hawaiian shirt under his navy jacket instead of the white button-down undershirt most Investigation agents wear, and also donned a red one in "Behind Enemy Mimes". He also wears a Hawaiian shirt as a fisherman.
  • Heroes Gone Fishing: He became a fisherman after retiring from Odd Squad, and remained as one for thirty years until Oprah begged for his help solving a cold case and he had a He's Back! moment.
  • Horrible Housing: Odd Squad: World Turned Odd shows that O'Donahue's house is situated in a deep part of the woods, with only a table with three chairs and a bench as furniture. It's not made clear if this is his place of residence in the show, however.
  • Mandatory Unretirement: He willingly came out of retirement in "The One That Got Away" when Oprah went to him for help in catching a villain who was stealing half of everything. By the end of the episode, it's implied that he went back into retirement right after solving one more case revolving around shoes being stolen from people, but "Happy Halfiversary" shows that he is back working for Odd Squad as an Investigation agent, having been attempting to make peace with the Queen of the Ice Trolls for five years, while "Behind Enemy Mimes" reveals that he is secretly working undercover for Oprah performing an infiltration of a villain trio known as the Thrimes.
  • Named After Somebody Famous: He's named after Phil Donahue, someone who directly influenced Oprah Winfrey — fitting, considering he's Oprah's former partner and almost always has her back.
  • That One Case: He quit Odd Squad due to failing to solve a case regarding a villain stealing half of various things, leaving his symbol behind as parting gifts. Thirty years later, in "The One That Got Away", he revisits the case with Oprah after she asks for his assistance, and the two manage catch Equal Evan, the villain in question.
  • Time-Passage Beard: Subverted. When Oprah comes across him in "The One That Got Away", he's shown with a full beard. However, it's revealed that the beard is fake when he rips it off while doing a Spy-Tux Reveal.
  • Totally Radical: Spoke in a combination of this and Valley Girl often back in the 1980's. He takes it down a notch in modern times.
  • True Companions: With Oprah. Even long after he quits, the two remain close.
  • Undying Loyalty: Odd Squad: World Turned Odd reveals that even in a crapsack Villain World, O'Donahue will absolutely refuse to turn to the odd side because "I do no odd."
  • Vocal Evolution: His voice gets noticeably deeper beginning in Season 2.

New Dr. O / Olly
Played by: Sasha Steiner
Dr. O's initial replacement before being transferred to the Food and Beverage department and becoming Oksana's replacement.

  • Accidental Misnaming: She has a tendency to mispronounce Oona's name often.
  • Best Friend: In "Dr. O No", Oona becomes New Dr. O's go-to person if she needs help with her Odd Squad Doctor duties, and she quickly becomes friends with her. However, the friendship is completely one-sided on New Dr. O's end, as she fails to realize just how much her antics are stressing Oona out.
  • Big Brother Is Watching: She's convinced that Precinct 13579's cafeteria workers are constantly watching people and are evil to boot.
  • Cloudcuckoolander: By God, is this girl eccentric — to the point where she even manages to unnerve Oona, who is a Genius Ditz herself. She's arguably one of the zaniest characters seen on the show, and that's saying something.
  • Comically Inept Healing: In "Dr. O No", it's clear that she has no idea how to cure odd illnesses, and even with Oona helping her out she's still incompetent. Unsurprisingly, she is transferred to the Food and Beverage department at the end of the episode.
  • Innocently Insensitive: Her debut episode, "Dr. O No", has her be completely oblivious to Oona's needs and feelings, which causes the Scientist to grow increasingly frustrated and stressed to the point where Ms. O, asking about a patient with tentacle feet, manages to make her hit her Rage Breaking Point.
  • Labcoat of Science and Medicine: She wears one of these while working in the Medical department.
  • Leader Wannabe: In "Hands on a Desk Chair", she attempts to join in on the competition to see who gets to be Precinct 13579's Director for a day, only for Olympia, Ocean and Orchid to protest. She doesn't get far before Orchid effectively scares her into changing her mind.
  • Meaningful Rename: Following the events of "Dr. O No", she is referred to as "Olly", which signifies her not being a part of the Medical department anymore (and no longer filling the role of being the former Dr. O's replacement). It's also an O name like what all other agents of Odd Squad have.
  • Offscreen Teleportation: New Dr. O manages to not only swap out Oona's white undershirt for an "anti-caf" shirt within seconds, but she also manages to somehow slip a flatbread sandwich into her pocket, without touching her once.
  • Stealth Hi/Bye: She has the ability to do this, which is best demonstrated in "Dr. O No" when she manages to pop up next to Oona, who is all the way in Yellowstone National Park.
  • Supreme Chef: Like Oksana before her, New Dr. O is a very skilled chef.
  • Who Names Their Kid "Dude"?: "New Dr. O" is revealed to be the name that she was born with, and because of it, Ms. O promotes her to be Dr. O's replacement. However, it's soon revealed that "New Dr. O" isn't as skilled at being in the Medical field as previously thought, and as a result, Ms. O moves her to the Food and Beverage department. She is renamed "Olly" in "Haunt Squad" and is referred to as such from that episode onwards.
  • You Are What You Hate: She shows complete disdain for Odd Squad cafeteria workers for no apparent reason, and tries to get Oona to hate them as well. By the end of "Dr. O No", she's transferred to the Food and Beverage department and becomes a cafeteria worker herself.

Xavier and Xena
Played by: Leonidas Castrounis (Xavier) and Sheena Darnley (Xena)
A partner pair from the Task Force department who are sent by the Big O to monitor Precinct 13579 in Season 2.

  • Affection-Hating Kid: They hate hugging and kissing. Xavier in particular also hates handshakes.
  • Bullying the Disabled: Xavier is more than willing to take Olympia's glasses with him when he and Xena begin marking things from Precinct 13579 that they wish to take with them when it gets shut down. Since Anna Cathcart does wear glasses in real life, if Xavier took Olympia's glasses, she'd potentially be Blind Without 'Em.
  • Disability as an Excuse for Jerkassery: Xena is disabled and uses a wheelchair to get around. While she doesn't use her disability to excuse her actions, her being in a wheelchair, Odd Squad's modus operandi of equality (as well as the overall show's theme of diversity), and her high status in the organization's hierarchy are potential reasons why agents don't confront her for what she's done.
  • The Dividual: They are never seen apart and always work together as a partner pair.
  • Everyone Has Standards: They may be more than willing to mistreat other agents and take their workplace away from them, but when it comes to firing Orson in "Saving Agent Orson", seeing that he has superpowers like sizeshifting and flight is enough to scare them into admitting defeat and letting him stay.
  • Evil Counterpart: Both agents serve as these to Owen and the rest of the Security department. Not only is the Task Force department logo an evil version of Security's (with the keyhole flipped upside down and being colored black), but while Xavier and Xena are selfish and greedy and have little regard for others' well-being, Owen and the other Security agents are laid-back and are generally affable. In addition, Owen in particular can be unhelpful, but doesn't have any malicious intent behind his actions.
  • Gender Flip: Xena was originally referred to as male in casting call scripts, while Xavier was of an Ambiguous Gender. In the series proper, Xena is female and Xavier is male.
  • Gold-Colored Superiority: They both wear gold as part of their outfits, and have a lot of gold-colored objects in their office.
  • Hate Sink: Both of them effectively serve as these, what with their mistreatment of Precinct 13579's agents, their selfishness, and their actions being more villainous than heroic — not to mention they are both Karma Houdinis by the season's end.
  • Hypercompetent Sidekick: Both of them work directly under the Big O, who is a Clueless Boss. Despite the fact that he doesn't seem to know them, however (shown in "Who is Agent Otis?" when he refers to them as "you other guys"), they are more than happy to carry out his orders. As of Season 3, it's unclear if they fulfill this role to Oprah, who becomes the new Big O.
  • Karma Houdini: Neither one of them get any sort of comeuppance for their misdeeds, and their final appearance in Season 2 is them departing from Precinct 13579 following the Big O firing Oprah and Otis from Odd Squad.
  • Lack of Empathy: Even when agents' physical and mental health are suffering, they show absolutely no empathy...that is, for anyone but themselves.
  • Letter Motif: Xavier and Xena, like others in the Task Force department, are referred to as "the X's". They also wear X-shaped buttons on their jackets, and Xena wears bobby pins in her hair that form an X shape.
  • Meaningful Rename: Xavier and Xena were initially named "Oke" note  and "Opaganda" in casting call scripts, respectively, before being renamed. While casting calls for "Oke" were looking for an actor who was African-Canadian to play the character, "Opaganda" was originally meant to be the personification of propaganda — something that would have been a bit too mature of a subject matter for PBS Kids to allow.
  • Mirthless Laughter: They often laugh in a stiff, awkward, unisonant manner. Doubles as an Evil Laugh.
  • Rules Lawyer: Their job, and by extension their department's job, is to make sure that Odd Squad precincts are following rules. If they find that a precinct is not following rules, they have the power to shut them down permanently.
  • Screw the Rules, I Make Them!: In "Xs and Os", they have no problem with accusing Precinct 13579 of being over budget while also buying expensive things for themselves. Them doing so turns out to be the cause of the precinct's financial woes.
  • Seven Deadly Sins: Both Xavier and Xena have Greed, Pride and Wrath as their character-defining traits.

Orana and Oliver
Played by: Geneva Phan (Orana) and George Holahan-Cantwell (Oliver)
An Investigation partner pair situated in Australia who are close confidantes of Oprah in the first half of Season 3.

  • Battle Boomerang: Orana has a Boomerang-inator on her which she uses to attack the Sand Queen in the mid-Season 3 finale. She ends up missing by a long shot, but it does manage to come back to her when the villainess attacks her and she becomes trapped in sand.
  • Bizarre Alien Limbs: In "Down the Tubes", Orana accidentally zaps Oliver with her Octopus-inator, giving him octopus tentacles for legs.
  • Braids of Action: Orana wears her hair in a braid extending backwards that is combined with a small bun.
  • The Dividual: They are never seen apart and always work together. It's justified, however, since they're partners.
  • Fiery Redhead: Inverted with Oliver, as he has red hair but doesn't have a temper, and is instead serious.
  • Land Down Under: They both work in an unidentified Australian Odd Squad precinct.
  • Mr. Exposition: They serve this role in "Slow Your Roll" and "Down the Tubes" along with Oprah, although they step out of it entirely in the Season 3 finale.
  • Spear Counterpart: Oliver looks strikingly identical to Olympia from Season 2, having the same red hair and red glasses and being in the same department.
  • Techno Wizard: Both agents are very skilled in the realm of technology. In "Slow Your Roll", they are able to tell the precise moment when the van is being hacked into and taken over by The Shadow.

Arctic Mr. O
Played by: Ellery Miki-Petite
The Director of the Odd Squad Arctic precinct and Opal and Omar's boss prior to them joining the Mobile Unit in Season 3.

  • The Ditz: Very, very much so, which is directly attributed to him having worked in the Arctic for a long time. Although he's not without his moments of intelligence.
  • Everyone Calls Him "Barkeep": He is always referred to as "Arctic Mr. O". His actual name has not been revealed.
  • Incompetence, Inc.: "Teach a Man to Ice Fish" reveals that in addition to being a Pointy-Haired Boss, his agents (bar Opal and Omar) are all incompetent to some degree. Justified by the fact that like Arctic Mr. O, they're generally isolated from people and from society.
  • Last Place You Look: He frequently loses his glasses despite the fact that they're still on his face. However, he never notices they're on his face until he asks where they are and someone points it out.
  • Leader Wannabe: Shows shades of this in "Odd Off The Press" where he vies for the position of the Little O following Oprah's departure. Despite failing in every aspect of Orpita's interview, he repeatedly asks her if he got the job, and even after Denver Mr. O is chosen for the position instead of him, he casually hangs out in Oprah's office. However, when Orpita is chosen to be the actual Little O instead after Denver Mr. O proves himself to be incapable of being in the position, Arctic Mr. O doesn't mind and takes the decision mostly in stride (apart from him mistaking Oprah's "my replacement was here all along" comment as being directed towards him, not Orpita).
  • Mellow Fellow: Not to the extent of those like Ocean, but he is very laid-back and rarely shows extreme emotion, even when facing down villains.
  • Nice Guy: For all his idiocy, he doesn't have a mean bone in his body. Case in point: in "Odd Off The Press", Orpita asks him to recite the "Well, what are you waiting for? Go!" Catchphrase during her interview with him. He begins to say it, but instead of "go", he expresses concern and asks if his (metaphorical) agent wants to take a day off because he refuses to send them out onto the field if they're getting sick. Orpita reacts to his effort with an exasperated but nonplussed "I would try that again", but it's still quite notable for someone of his department and overall status in the Odd Squad hierarchy, especially since past Directors have been known to be Mean Bosses at best and Enfant Terribles at worst.
  • Pointy-Haired Boss: He's easily the most ineffective Director seen in the show thus far. Potentially justified by the fact that he works at a barren Odd Squad precinct in the Arctic, which doesn't operate like most precincts.
  • Purple Is Powerful: Subverted. He does wear mostly purple, as it's his department's theme color, but is very weak compared to other Directors such as Oprah and Olive.
  • Really Fond of Sleeping: The OddTube episode "Know an O: Part 1" reveals that he's a Sleepyhead that takes up to eight naps a day. "Odd Beginnings: Part 1" showcases this in action, as he's shown sleeping in his chair while Opal and Omar go to their desks with the Bag O' Machines.
  • Reassigned to Antarctica: Befitting his name, Arctic Mr. O works at the Arctic Odd Squad precinct. It's not revealed how he came to be in charge of the precinct, whether it was by punishment from Oprah (as the Big O) or by promotion from a previous Director. The "Odd Beginnings" two-parter implies that the precinct's Headquarters doesn't even have working heat and he asks Oprah for space heaters and hand warmers as soon as he gets the chance, but aside from that, he doesn't seem to mind working there.
  • Super-Strong Child: Notably averted. Unlike most Odd Squad Directors, he is very weak and doesn't have much physical strength, if any at all. "Odd Off The Press" has Orpita presenting a board and a cinder block for him to chop, and instead of going right for it like Denver Mr. O and Belgium Ms. O, he asks her incredulously, "With my hands?"
  • Trademark Favorite Food: As an Odd Squad Director, his drink of choice is water. However, unlike Olive — whose drink of choice is also water — he eats icicles that come in various flavors.
  • With Due Respect: In "Odd Beginnings: Part 2", he has no problem confronting the Big O about taking Opal and Omar away from him since they work for him, and says that if she wants them to quit working at his precinct as Investigation agents and go into the newly-created Mobile Unit department, then she will have to give him something in return. Opal, Omar, and even Oprah herself immediately grow concerned, but luckily, all he wanted to trade them for were heaters and glove warmers. May be justified by the fact that Opal and Omar are the best agents in the precinct, which doesn't have many agents to begin with, and the decision for them to become a part of a new department working under the Big Office and not a singular precinct is very sudden.
  • Yank the Dog's Chain: He ends up being in control of the chain in "Odd Beginnings: Part 1". Upon Opal and Omar returning to Headquarters and finding that the two identical snowflakes they managed to capture have melted, Arctic Mr. O attempts to cheer them up by offering them some new machines. The two Investigation agents go absolutely nuts as they scream in delight about finally getting gadgets, all while their boss looks on with a smile...until he simply tells them that no, they're not getting gadgets because it's too cold in the Arctic for gadgets to work effectively. Instead, he gives them a bag of "simple machines", filled with things such as a lever and a pulley, which ends up being a Chekhov's Gun.

    Season Three (Mobile Unit

Played by: Valentina Herrera
One of the main characters of Season 3. She and Agent Omar used to work in the Arctic precinct until they got transferred to the newly-created Mobile Unit department.
  • The Ace: She is seen as this by The Shadow.
  • Agent Mulder: She believes in the 44-leaf clover and wishes to find it, and eventually does along with her Omar, Oswald and Orla.
  • Ascended Fangirl: She is a big fan of Soundcheck and gets the chance to meet them in "Music of Sound". She later helps the members of the band come back together when Orla inadvertently makes them break up.
  • Beware the Nice Ones: Making this girl angry is a very, very bad idea.
  • Big Sister Instinct: An exaggerated example with Olizabeth. Opal refused to let her fire big gadgets, play Capture the Flag with a laser chicken, or even play the tuba in band class because she was too afraid that Olizabeth would get hurt. Her fear is somewhat justified by the fact that Odd Squad is a deadly organization that can lead to any employee's untimely death, but it was too much for Olizabeth and she decided to turn to villainy instead. Once Opal realizes what she's done, the two reconcile.
  • Blood Knight: Has shades of this, as she is often the first to throw down against, and antagonize, villains.
  • But for Me, It Was Tuesday: By "It's Not Easy Being Chill", fighting oddness becomes something she regularly engages in and loves doing, which is quite a big jump considering she never had to fight oddness when working in the Arctic.
  • Cain and Abel: The Abel to The Shadow's Cain. Compared to her sister, Opal is far more benevolent and kind.
  • Captain's Log: Starts one in "It's Not Easy Being Chill" which ends up being the catalyst for The Shadow's Heel–Face Turn.
  • Catchphrase: "We are an elite team of agents..." There's a whole monologue to follow, but she rarely gets past the above sentence.
  • Competition Freak: She can get very competitive at times, and it can be hard to make her develop common sense. The episode "Mr. Unpredictable" confirms that she's well aware of this flaw, but is also quick to deny it when she is called out on it.
  • Create Your Own Villain: The Shadow mentions that Opal made her who she is. Come "End of the Road" and it's revealed that her words hold merit — Opal's consistent sheltering of her when the two were agents-in-training caused her to perform a Face–Heel Turn and become a villain, something Opal would never dream of doing.
  • Cute, but Cacophonic: Opal may be adorable, but her screaming and yelling could put Oprah to shame in terms of volume. She's easily one of the loudest agents on the show.
  • Desperately Looking for a Purpose in Life: Her main goal is to be noticed by the Big O so she will be transferred to another Odd Squad precinct where she can put her skills to better use. By the end of the season premiere, she ends up accomplishing this by being transferred not into a different precinct, but into an entire newly-created department.
  • Expy: Her perfectionist mannerisms and role as the Straight Man to Omar call to mind Otis and Olive, her predecessors, as well as Olympia (who has a similar perfectionist tendency).
  • Genki Girl: Although she's not hyperactive all the time like Olympia, Opal can get very excitable and noisy.
  • Hidden Depths: When attempting to stall Orchid in "Slides and Ladders", a whiteboard is shown as Opal rattles off answers for her question of how to beat a laser chicken. Considering the drawings and complicated math equations, it's implied that Opal may have more mathematical talent than she lets on (or at the very least, artistic talent).
  • Jumped at the Call: As soon as she finds out that Oswald had discovered the map to the 44-leaf clover, she's quick to jump on board and begin setting out on an adventure to New York City with no regard for what Arctic Mr. O would think.
  • The Leader: Once the Mobile Unit is formed, she takes on the role as the de facto leader of the team up until her departure, when Orla becomes her successor in the role.
  • Musical Assassin: In "Wax On Wax Odd", Opal is taught how to play the keyboard by way of Orla teaching her how to make pizza the day prior, and uses her newfound ability to hypnotize and drive away a giant purple snake.
  • Not Good with People: Implied and inverted. Opal is fine with other human beings (unless they're villains) and gets along with them well, but the "How to Keep Your Squad Happy" Training Video implies that she isn't too fond of animals, as she previously told Omar that he can get any pet he wants provided that she can't see it.
  • Numerological Motif: 44, which is her badge number. She also vowed to save and protect the 44-leaf clover, an ancient Odd Squad artifact. Relatedly, 43 is the Arc Number for Season 1 and is associated with Odd Todd, the season's Big Bad who was Olive's former partner — and The Shadow, Season 3's Big Bad, is Opal's younger sister.
  • Pen Pals: Before the events of Season 3, she exchanged letters with Oswald. One of the things they discussed is the location of the 44-leaf clover, which kickstarts the plot of "Odd Beginnings".
  • Plucky Girl: She is very determined and will often charge into cases head-on, dragging her teammates behind her regardless of if they're ready or not. Even if things aren't working out in her favor, she almost never gives up and is always ready to kick odd butt.
  • Put on a Bus: She leaves the Mobile Unit in "End of the Road" in order to stay behind with her sister, reverse the damage she caused in other countries, and make amends with her.
  • Really Fond of Sleeping: The "Powering Through a Power Nap" Training Video reveals that she has perfected the art of "power napping", having the ability to take short, 1-minute naps and wake up well-rested. An interview video released before the premiere of Season 3 also reveals that her favorite gadget is the Sleep-inator.
  • The Perfectionist: Even moreso than Olympia. She views OSMU in very high standards and strives for the team to be perfect, to such an extent where it's considered a Fatal Flaw in some cases. This is evident in episodes such as "Running on Empty" and "Down the Tubes" and even gets a deconstruction in "Jeremy".
  • Reassigned to Antarctica: She used to work in the Arctic Odd Squad Headquarters with Omar prior to being moved to the new Mobile Unit department.
  • Safety Worst: The season finale reveals that the reason her sister became a villain was because Opal was overprotective of her to excessive degrees when the two were attending the Odd Squad Academy.
  • Straight Man: To Omar.
  • Suddenly Bilingual: She can understand and speak Spanish, although she only demonstrates it in "The Void".
  • True Companions: With Omar, who was her sole partner when the two of them were working in the Arctic. Their partner bond is so strong that when Omar was feeling upset about not being able to buy a souvenir in "Train of Thoughts", Opal decided to go full Determinator and find him one because she knows how important souvenirs are to him.
  • Unknown Rival: Unbeknownst to her, the Shadow has a grudge against her. The reason for this is set up as the main mystery for season 3.

Played by: Jayce Alexander
One of the main characters of Season 3, he and Agent Opal used to work at the Arctic precinct until they got transferred to the newly-created Mobile Unit department.
  • Big Eater: It's a trait he shares with one of his predecessors, Otto.
  • The Ditz: Omar isn't very bright. For example, in "Running on Empty", he tries to use porous things to catch the blob.
  • Expy: His goofy personality and Big Eater tendencies may remind some of his predecessors, Olympia and Otto.
  • The Good King: In "Odd Squad in the Shadows", Omar becomes this to the rest of the Shadow League, going so far as to tack on a "please" to his orders. He even wears a Cool Crown made out of office supplies.
  • Hidden Depths: "The Void" reveals that unlike the rest of OSMU, Omar can't rollerskate. He manages to learn how to with the help of Oneta.
  • The Lancer: Serves as a comical Foil to everyone in the team no matter who he's paired with, but especially Opal.
  • The Lightfooted: It's shown in "Jeremy" that Omar is very agile and dodges attacks effortlessly, to such an extent that it leaves Monsieur Papier-Mache exhausted.
  • Nice Guy: Very friendly and affable.
  • Only Sane Man: Sometimes serves this role to Opal.
  • Perpetual Smiler: He's pretty much always smiling.
  • The Pollyanna: He always looks on the bright side of things.
  • The Power of Friendship: Odd Squad as an organization runs on this as an MO, but Omar is one of the few agents who has it as his own MO and sticks by it. His Catchphrase when answering his phone is "Omar's House of Friendship", and "Running on Empty" even has him separating him and his teammates into two separate groups just so they can all bond with each other (due to the fact that he and Opal have been partners since before the season began), something that would become a mainstay in future episodes.
  • Suddenly Bilingual: Averted in his case, as he is the only agent of the Mobile Unit who can't speak Spanish up until he learns how to in "The Void".
  • Superhero Trophy Shelf: Omar is defined by his love of collecting souvenirs, which he keeps on the other side of the hidden wall located in the Mobile Unit van (and which he refers to as "Omar's House of Awesomeness"). He always tries to get at least one from every location he and the rest of the Mobile Unit visits. Not being able to get one, for whatever reason, immediately sours his optimism, and if the reactions of Opal and Oswald when inquiring about taking him to Crimson Carl's house with them in "Odd Squad in the Shadows" are any indication, it's a Berserk Button for him.
  • Vibrant Orange: Omar is cheerful, upbeat and cool. He wears an orange tie, shoes and belt, and the department he's in is associated with the color orange.
  • Vocal Evolution: His voice gets deeper beginning with "Odd Off The Press".

Played by: Gavin MacIver-Wright
One of the main characters of Season 3. He used to work at the Odd Squad Museum of Natural Odd in New York City as a "library-museum person", having left to join Agents Opal and Omar on their quest to find the 44-leaf clover.
  • Actor Allusion: Oswald states in "The Thrill of the Face" that he has a twin brother who is a tube operator. This is a direct reference to "Hands on a Desk Chair", where O'Paddy, one of Precinct 13579's tube operators, is introduced, who is also played by Gavin MacIver-Wright.
  • Badass Bookworm: Oswald loves reading and prefers to stay out of combat rather than jump right into it, but make no mistake — when he has to fight, he's right on par with the rest of his teammates.
  • Big Eater: While not to the extent of those like Omar and Otto — he doesn't let food distract him from the task at hand — he can pack away quite a bit of food. The episode "Raising the Bar" has him eating three pies in one sitting and still being hungry for a fourth one.
  • Cowardly Lion: He can be fearful at times, but loves to solve cases regardless.
  • Dancing Royalty: Oswald absolutely loves to dance and is quite skilled at it, especially concerning the robot dance. However, when Opal, Omar and Orla praise him on it, he claims that his supposed "robot dance" are actually his normal dance moves. He improves his skill by "Box Trot", though.
  • Does Not Like Spam: He doesn't like pineapple juice.
  • Expy: Shares some traits with Oscar, being The Smart Guy of the group who is also quite timid.
  • Fiery Redhead: Inverted. Oswald has red hair, but he is scared and timid.
  • Hidden Depths: "Oswald in the Machine" shows that he's quite skilled at doing the robot dance.
    • He also likes throwing snowballs and watching people catch them, as revealed in "Running on Empty".
  • Innocent Blue Eyes: He's the second main character of the show to have blue eyes, the first being Otis — most every other main character has brown eyes.
  • In the Blood: According to him, sitting and working behind a desk is a fate passed down to him from his twin brother, who works as a tube operator in Precinct 13579.
  • Jumped at the Call: When Opal and Omar meet him for the first time and explain their mission to save the 44-leaf clover, he immediately jumps at the chance of seeing places outside of the Museum of Natural Odd, since he's confined to sitting at the front desk all day. This ends up biting him big-time in "The Thrill of the Face" when he realizes that he never considered the consequences of exploring the world and how much danger comes with it, and how much that would terrify him.
  • Only Sane Man: Serves as this to Opal, Omar and Orla at various points.
  • Red Is Heroic: He has red hair and is one of the good guys.
  • Sleepyhead: In "Down the Tubes", he enters Tube Station 5, the home of a family, and falls asleep from exhaustion on their table. The end of the episode shows him still asleep while riding the tubes, and not even Orla — who is known for being loud and brash — is able to wake him up.
  • The Smart Guy: The smartest of the OSMU team, thanks to all the knowledge he gained from working at the Museum of Natural Odd. He's an expert on porosity, directions, and basic math.
  • Youthful Freckles: He has some freckles on his face.

Played by: Alyssa Hidalgo
One of the main characters of Season 3. She is the eldest member of the group, being 500 years old.

  • 24-Hour Armor: When she is transferred to the new Mobile Unit department, she keeps a piece of shoulder armor that runs down her arm, which she never takes off.
  • The Anticipator: In "Wax On Wax Odd", she explains to her teammates that she overheard a conversation between a sorcerer villain and a Gorgon villainess as they make plans to cause oddness 450 years in the future. As a result, she wrote down the date they decided to cause oddness in her day planner, and when the Mobile Unit is formed in the present day, she trains them Wax On, Wax Off-style in order to prepare them for the oddities to come. It's also implied in the episode that she planned for her, Opal, Omar and Oswald to come together as a team, but it's never confirmed.
  • Arc Symbol: In the second half of the season, Orla is sometimes shown wearing a sundial watch in place of her usual high-tech smartwatch as a Running Gag. She also has "Wait one tiny little notch on the sundial!" as one of her Catchphrases. Furthermore, the introduction of another ancient Odd Squad artifact known as the golden sundial is part of a Story Arc which focuses on her.
  • Badass Adorable: She's a kid who is a fierce and tough ancient warrior. Perhaps the best example of this in action is "Down the Tubes", where she manages to deliver a Curb-Stomp Battle to Tennifer by way of destroying her Scrambler in mere seconds without even flinching.
  • Birthday Episode: She has her birthday in "Orla's Birthday."
  • Bizarre Taste in Food: Not that it can be helped since Odd Squad is a World of Weirdness where weird foods are common, but Orla's food preferences are some of the weirdest of any Odd Squad agent. At her 500th birthday party, Omar and Oswald gift her a pie made out of scorpions, and a casting call script for Olando has Orla offering him spider milk pudding as a light snack. That's not to say she doesn't eat normal food though — in "Odd Beginnings: Part 2", Omar teaches Orla about cinnamon buns, and having eaten nuts and berries as her main diet for 400 years, she decides to give them a try and finds them delicious.
  • Bound and Gagged: Her Weapon of Choice is her Rope-inator, a gadget from ancient times which is made out of stone instead of metal and can instantly trap enemies by tying them up with rope.
  • Brutal Honesty: Orla is definitely not afraid to speak her mind whether what she says will hurt someone or not.
  • But for Me, It Was Tuesday: By "It's Not Easy Being Chill", she views battling numerous oddities as a completely normal thing, which is likely due to all the experience she had guarding the 44-leaf clover.
  • Call a Rabbit a "Smeerp": Being an ancient Odd Squad agent, she does this a lot. Segways to her are "horseless chariots", while brains are "memory balls". It even goes to such an extent where she refers to water — something that's quite common in the Amazon — as "nectar".
  • Catchphrase: Says "Onward ho!" just before setting off on adventure.
    • Also has "Wait one tiny little notch on the sundial!" which was originally a single Call a Rabbit a "Smeerp" moment in "Train of Thoughts" before being upgraded to a catchphrase in the second half of the season to coincide with a Story Arc that focuses on her.
  • Character Blog: Hosts Season 2 of OddTube in place of Olympia.
  • Characterization Marches On: In early episodes of Season 3, she was more of a Blood Knight, reveling in the chance to do fierce battle and being disappointed when cases turned out to be simple with little fighting required, since that's what she was used to as the guardian of the 44-leaf clover. However, over time she has become more sensible and doesn't actively try to find action in cases that require menial tasks to be performed, but can still kick plenty of odd butt when need be.
  • Child Soldiers: Prior to guarding the 44-leaf clover, Orla was in a heated war between Odd Squad agents and villains, all battling to see who could control the clover. It's left ambiguous if there were any casualties since the show has a strict Never Say "Die" policy, but Orla, along with three other agents, made it out alive and was eventually chosen to guard the clover.
  • Clueless Boss: Becomes one in "O for a Day" due to her sheer inexperience at being an Odd Squad Director, believing that the job is easygoing and that there's plenty of time for relaxation.
  • Companion Cube: Had one in the form of Bouldy, a giant boulder situated in her old Amazon Headquarters, until they broke off their friendship for an unexplained reason.
  • Cool Helmet: She wears one as the guardian of the 44-leaf clover, which is known as the "protector's helmet". She sheds it when she becomes part of the Mobile Unit department, though.
  • Creepy Cave: "End of the Road" reveals that she used to live by herself in a dark spacious cave. It's implied that she never liked living there, as she cries when explaining to Opal that had she not helped to form the Mobile Unit, her living situation never would have improved.
  • Does Not Like Spam: She doesn't like pizza.
  • Dreadful Musician: Surprisingly averted — Orla is a very skilled singer, and manages to pull off an awesome duet with Opal in "Slow Your Roll".
  • Dream Walker: "In Your Dreams" has her becoming one along with Osmerelda, entering the dreams of the Little O in order to help her find the Dream Weaver's Bad Dream Machine and free her from her constant nightmares caused by the villainess.
  • Dynamic Entry: Employs this in one of her battle moves, which is known as "Smash and Grab".
  • Expy: Averted. Unlike Omar, Oswald and Opal, she is not based on any preexisting main character.
  • Fashionable Asymmetry: She wears a braid wrapped in golden wire on one side of her head and a low ponytail on the other side, with the rest of her hair wrapped in a fan bun on the top of her head.
  • Faster Than They Look: Despite the fact that Orla is 500 years old, she has very high stamina and is able to walk and run for long periods of time without getting tired.
  • Fish out of Water: Being an ancient warrior, she is very unfamiliar with the modern world. Once she becomes a part of the Mobile Unit, she gradually starts to learn about modernity and begins to fit in.
  • Knight in Shining Armor: She fits this to a near-T, minus all the romance stuff.
  • The Leader: Takes this position in the group following Opal's departure. She also becomes the temporary leader of OSMU in "Odd Squad in the Shadows".
  • Leeroy Jenkins: Has a tendency to rush through things and be impulsive, which often bites her in the butt more often than not. Her Establishing Character Moment has her immediately charging at Opal, Omar and Oswald and tying them up in rope, mistakenly believing them to be villains despite the fact that they're in professional uniforms and are children like her.
  • The Name Is Bond, James Bond: She initially introduces herself to Opal, Omar and Oswald as "Orla, Agent Orla".
  • No Sense of Humor: Orla doesn't understand humor all that well. Omar's clown antics while he suffers from Clown-itosis in "Into the Odd Woods" fails to make her even do so much as crack a smile, and she can't grasp what makes the classic Chicken Joke so funny.
  • No Social Skills: Comes with being a Fish out of Water. Upon meeting Soundcheck in "Music of Sound", for example, they extend a fist to her so she can fist-bump them, but instead, she grabs the fist and shakes it as though she's performing a handshake.
  • Pintsized Powerhouse: She is far and away the strongest member of the Odd Squad Mobile Unit.
  • Pubescent Braces: She wears these beginning in "Odd Off The Press", although she refers to them as "tooth armor".
  • Read the Freaking Manual: Orla is definitely not one to read a manual or any sort of book to figure out how something works. However, unlike those like Otis and Otto, she believes it's because that Odd Squad agents in general don't need them.
  • Really 700 Years Old: She looks like a kid, but she's really 500 years old.
  • Scarred Equipment: Her shield is quite run-down compared to her teammates' shields, which isn't helped by the fact that it's made out of wood. The ancient Odd Squad shield she's gifted in "Orla's Birthday" is also littered with scratches and chips.
  • Scary Scorpions: Orla keeps some in a box that she keeps in her Hammerspace spine, which she usually releases (or tries to release, anyway) to settle arguments.
  • Something Only They Would Say: In "Odd Beginnings: Part 2", she asks Opal, Oswald and Omar a question that only an Odd Squad agent could know in order for them to prove that they work for Odd Squad and aren't villains. Her question, however, is surprisingly simple, as she asks what letter all agents' names start with. Naturally, all three of them guess correctly.
  • Spock Speak: Speaks in a fancy and direct way, and doesn't use contractions.
  • Stock Animal Diet: Subverted. Her main diet while living in the Amazon were nuts and berries, but she's a human being, not a bear.
  • Suddenly Bilingual: Along with Opal and Oswald, she is revealed to understand and speak Spanish in "The Void". However, it's justified in her case, since she originally resided in the Amazon rainforest.
    • Zigzagged in "Portalandia", where she seems to understand a sign in the Portal Master store that's written entirely in Japanese, but her English translations are incorrect.
  • Technologically Blind Elders: Mileage varies on whether she could be considered elderly (since she's 500 years old but is still a child), but she has no idea what the Internet is when Opal brings it up. Omar explains that it's like a library, but it works faster and has way more cat videos.
  • Telepathy: She has the ability to communicate via telepathy, as shown in the OddTube episode "Oddness in NYC".
  • Unaffected by Spice: In contrast to Oswald, Orla has a very high heat tolerance. The OddTube episode "Happy Twelve-iversary" even has her chugging a bottle of hot sauce like it's nothing, mistaking it for juice that happens to taste like red peppers.
  • Undying Loyalty: During her Backstory in "The Weight of the World Depends on Orla", it's shown that Orla and Osmond, another agent selected as a candidate for the role of being the 44-leaf clover's guardian, competed for the protector's helmet, and when Osmond supposedly tripped and fell, Orla chose to help him over getting the helmet. Unfortunately Osmond tripping and falling was a Wounded Gazelle Gambit on his part and he manages to get the helmet before her, but Ancient Ms. O, who led Orla's ancient Headquarters, gives it to Orla due to her selflessness. Even in the present day, Orla is shown to be extremely loyal to Odd Squad and to her teammates, and isn't afraid to help them out when they're in peril.
  • Vocal Evolution: Like Omar, her voice gets deeper and becomes more baritone beginning in "Odd Off The Press".
  • You Are in Command Now: In "O for a Day", she is forced to fill in for Seattle Mr. O at his Headquarters, becoming co-Directors with Omar. Since she has no experience being in the Management department, however, she proves to be quite inept at the job.
  • Young Entrepreneur: Becomes one in "Overdue!" where she teams up with Oswald to run stands selling various things in order to get money to pay her library fine as a result of an Extremely Overdue Library Book.

Esmerelda Kim
Click to see her as an Odd Squad agent. 
Played by: Glee Dango
A girl who serves as the Running Gag of the season before becoming a member of OSMU, replacing Opal.

  • Accidental Misnaming: "Odd Off The Press" reveals that her real name is actually Osmerelda Kim, and that everyone else has been referring to her as "Esmerelda Kim" by mistake. This is what allows her to be eligible to join Odd Squad, and by extension, the Mobile Unit, as Opal's replacement.
  • Adorably Precocious Child: She's younger than any of the OSMU agents, and yet has a packed schedule that includes various things, like flute practice, swim lessons, and caring for her sister. However, she's still plenty adorable.
  • Ambiguously Absent Parent: Neither her mother nor her father are seen or mentioned. The only adult figure known to exist in her life is her "favorite uncle".
  • Ascended Extra: A teaser image from "Odd Off The Press" reveals that she is no longer a Running Gag character and is now a part of the Odd Squad Mobile Unit, likely having replaced Opal following her departure.
  • Audience Surrogate: Downplayed. Esmerelda isn't an out-and-out surrogate, but her Running Gag of being too busy to join in on Odd Squad's adventures is meant to strike a chord with both kids who are busy with extracurricular activities and with parents who also have busy schedules.
  • Promotion to Parent: Implied to be the case with her sister, as Esmerelda takes responsibility in picking her up from a dentist appointment.
  • invoked Replacement Scrappy: A zig-zagged, in-universe example. The Big O initially chose Esmerelda as a top replacement for Orla to work in Odd Squad in the Mobile Unit department, but didn't hire her because she was constantly busy. She, as well as OSMU, are on friendly terms with her, but the latter group is hesitant about letting her join them in the Season 3 finale. Averted as of "Odd Off The Press", where the Mobile Unit is perfectly fine about letting her join and doesn't hate her in any way.
  • Running Gag: Her appearances involve her asking the Mobile Unit if she can join them on their adventures, only for her to realize she has other responsibilities that must come first and ask if she can join them on another date. When the agents shoot down her offer, she gives a nonchalant "Guess it didn't work out" and walks away. The only time she doesn't do this is in the Season 3 finale, where she offers to take the place of Opal following her departure from OSMU. When the agents act hesitant, she leaves them with a "Let me know!" before walking away.
  • Signature Instrument: While she can play a variety of instruments, she is most commonly seen with her flute, which she often uses to play the first ten notes of the show's theme song. Ends up being a powerful weapon in "H2 Oh No".
  • The Smart Guy: In "Odd Off The Press", she is referred to as the "out-of-the-box thinker" of the group.

Orpita / Little O
Click to see her as the Big O's assistant. 
Click to see her as the Little O. 
Played by: Shazdeh Kapadia
A young girl initially introduced in "It's Not Easy Being Chill" as an agent-in-training at the Odd Squad Academy, then returned in "Odd Off The Press" as the Big O's assistant before being promoted to the role of temporary Big O and given the new name "Little O".

  • Ascended Extra: She was previously a one-shot character in "It's Not Easy Being Chill" before becoming a member of the Main 5 group comprised of her, Osmeralda Kim, Omar, Opal and Oswald.
  • Adorably Precocious Child: Zig-zagged. Orpita is the stand-in leader of all Odd Squad precincts in the world, so she has a load of responsibility on her shoulders and is generally regarded as serious and stern. However, since she is a child, she's prone to fits of immaturity, although it's nowhere near the levels of the Big O before Oprah.
  • Character Development: In "It's Not Easy Being Chill", she was presented as a naive but innocent agent-in-training who was still attending the Odd Squad Academy and wasn't too skilled in the ways of math and Odd Squad as a whole, being more of a Mellow Fellow. Come "Odd Off The Press", she has matured to the point where she becomes the Number Two to the Big O and has a much better understanding of how Odd Squad functions, with her naivety completely gone.
  • Dream Weaver: While it's never stated in the show proper, "In Your Dreams" all but states that she has the ability to engage in lucid dreaming, shaping her own dreams in order to fight back against the aptly-named Dream Weaver, who attempts to turn her dreams into nightmares.
  • Everyone Calls Him "Barkeep": Upon being promoted to the position of Little O, she is consistently referred to as such, since it's also the name of the title an agent receives upon promotion.
  • Mellow Fellow: In "It's Not Easy Being Chill", she is shown to be very laid-back, and because of it, she takes a liking to Omar. As of "Odd Off The Press", she's become a little less mellow, but still mostly keeps a cool head when tensions run high.
  • Number Two: Takes up this role to the Big O, being tasked with interviewing potential candidates to be her replacement before being chosen herself for the position.
  • Rank Up: She goes from being an agent-in-training, to working in the department of The Big Office as the Big O's assistant, to being the temporary Big O.
  • Stealth Hi/Bye: She loves to employ this in the same vein as Oprah.
  • Suspiciously Similar Substitute: She shares quite a few mannerisms and traits with Oprah, from her love of juice to her frequency to suddenly shout. However, they also have differences — Orpita is more of a Benevolent Boss and is more childish in nature, and she doesn't have the same amount of strength as Oprah. She is also far younger than Oprah, who is over 200 years old.
  • Teen Superspy: While Odd Squad agents are generally regarded as this, it's revealed in "Mission O Possible" that Orpita was once an Odd Squad Special Operations agent.
  • Trademark Favorite Food: Juice boxes, similar to Oprah, although it's currently unknown whether it's to the point of her being The Alcoholic. According to "Odd Off The Press", loving juice boxes and having a vast knowledge of them and their flavors is a requirement for being in the position of the Big O.
    • On a more personal level, she also loves grilled halloumi.
  • Villain in a White Suit: Inverted. As the Little O, she wears a white suit, but is in no way villainous.

Played by: Ari Resnick
An ancient Odd Squad agent tasked with guarding an Odd Squad artifact known as the Golden Sundial in a desert region.

  • Bizarre Taste in Food: If the casting call script for him is any indication, he enjoys eating things like spider milk pudding and worm salad sandwiches alongside other normal foods like banana bread.
  • Fish out of Water: Similar to Orla, he is an ancient agent who is unfamiliar with the modern world.
  • Leeroy Jenkins: Another trait he shares with Orla — he is definitely not afraid to rush into things.
  • Older Is Better: He firmly believes that the old-fashioned way of doing things is the best way, which is in contrast with Orla, who eventually gets used to the modern way of living in society.
  • Spear Counterpart: Serves as this, as well as an Expy, to Orla, who is also an ancient Odd Squad agent.
  • Spock Speak: Like Orla, he does not use contractions and speaks in a very blunt manner.

Van Computer
Voiced by: Hattie Kragten
The Mobile Unit van's built-in AI. It controls many features of the van and often aids the agents in numerous ways.

  • Benevolent A.I.: Doesn't have a mean circuit in its system.
  • Computer Voice: Normally, its voice sounds human, but also has a robotic tone to it. When it's low on energy, its voice sounds more robotic, and when it's singing, its voice sounds more human.
  • Expositron 9000: Downplayed. It doesn't give exposition, but relays calls to the agents from the Big O, who serves as Ms. Exposition in nearly every episode.
  • Fun Personified: It thinks of itself as this, and has the ability to turn on multicolored lights and fire streamers, but mileage varies on whether it's true.
    Van Computer: Every group needs a Wild Card.
  • Sixth Ranger: If its interview is any indication, it considers itself to be the fifth member of the Odd Squad Mobile Unit and goes to extreme lengths to prove it. However, it generally serves a supporting role to the agents (often relaying calls from the Big O), doesn't help them solve cases often, and isn't employed by the organization in any manner.
  • Smart House: Of a sort. It's not made clear whether the van serves as the Mobile Unit agents' home, but the Van Computer can operate lights and appliances in a similar vein to a house equipped with smart technology.
    Major Villains 

Odd Todd
Played by: Joshua Kilimnik
A former Odd Squad agent who was the best at solving many cases and winning many awards (including the one for most awards). He is really good at solving math problems in his head, leading to his successes. Eventually, he started to believe that the Odd Squad's quest to stop odd things from happening was wrong, so he started to deliberately cause odd cases to be unsolved. He got fired for this, then came back to cause a Pie-nado in HQ and re-invent himself as a villain.

  • Anti-Role Model: Oh yeah, him belittling his partner Olive and letting his pride get the best of him are major reasons he got fired from the squad. That's a difference between him and Otto. They both were Olive's partner, but Otto actually cared for Olive and allows her to have a say in things. Todd on the other hand looked down on Olive, and cares more about his personal image more the his partner.
  • Arc Number: His agent number is 43, and that number appears multiple times in the series.
  • Benevolent Boss: For an arrogant, mischievous, chaos loving villain, he's very nice to his minions.
  • Chaotic Evil: He wants to cause odd things to happen For the Evulz.
  • Child Prodigy: There's a reason he was labeled as Odd Squad's best agent.
  • Cloudcuckoolander: Being odd can do this to you.
  • Control Freak: As a gardener.
  • The Dreaded: Before his origins were revealed, many agents avoided talking about him.
  • Even Evil Has Standards: in the Season 1 finale, he got freaked out by all the odd creatures released by Otto.
  • Evil Genius: He's shown to be incredibly intelligent and a savvy problem solver. While he was a very successful Odd Squad agent, he's also quite ruthless, calculating and devious
  • Evil Is Hammy: Loves to ham things up in nearly all of his scenes.
  • Face–Heel Turn: He was a good agent until he decided to make oddness instead.
  • Fallen Hero: See The Paragon Always Rebels.
  • Hero's Evil Predecessor: Is this to Otto, being Olive's former partner.
  • Invincible Hero: Was this before his Face–Heel Turn. He could solve any case.
  • Jerkass: He was a jerk to Olive before he became evil, criticizing her habit of writing on her notebook to solve problems and calling her "Scribbles."
  • Odd Name Out: All the other agents' have names starting with "O," his starts with "T."
  • The Paragon Always Rebels: He was Ms. O's best agent until he decided oddness was better.
  • Reformed, but Not Tamed: Shows a bit of his former self as a gardener.
  • Skunk Stripe: A large white one through his brown hair.
  • Smug Snake: Being one of the smartest agents Odd Squad ever had, naturally he often sees himself as too good for rules and can be very arrogant, not paying attention to anyone other than himself. "The O Games" is a perfect example of this in action.
  • Walking Spoiler: His existence is foreshadowed a couple of times in Season 1, but he never physically appears until midway through the season, and that's when things take a darker turn.

Played by: Laura Landauer, Aja Neinstein (young)
One of the Squad's most consistent enemies.

  • I Know What You Fear: In "The Briefcase", she turns her entire head into a pie in order to scare Olive, who is afraid of them. Later on, she turns Ms. O's briefcase into a pie in another attempt to scare the Investigation agent.
  • Sci-Fi Bob Haircut: Hers is bright blue.
  • Shapeshifter Baggage: Though she is said to retain the same weight, she has been seen to turn into things like a rocket and butterfly and still fly away.
  • Shapeshifter Default Form: A humanoid being with a bob cut and bright white pictures as a body.
  • Smug Snake: She's infamous for her serious level of pride which often leads to agents using it against her and taking her down.
  • Would Hurt a Child: Most of the villains fall under this trope, but she gets special mention, as she isn't afraid to torture Olive with the one thing that she fears most.
  • You Gotta Have Blue Hair: She does, in a Sci-Fi Bob Haircut.

Otis' Duck Family

One of the Greater Scope Villains of Season 2 and Otis' adoptive family.
  • Didn't Think This Through: Brother Quack decided to create a machine that would move the Earth closer to the sun so he and the other ducks could have the pond all to themselves... not considering the fact that doing so would fry everyone on Earth alive, including the Ducks, so his plan never would have worked out.
  • Heel–Face Turn: It's implied that Brother Quack makes one, as he reconciles with Otis at the end of the Season 2 finale.
  • Walking Spoiler: Their existence isn't revealed until the Season 2 finale, where we get to see why Otis is the way he is.

The Shadow
Played by: Zarina Rocha
The main antagonist of the first half of Season 3 who has a vendetta against Opal and the rest of OSMU.

  • Big Bad: Of Season 3.
  • Cain and Abel: The Cain to Opal's Abel. While she is cunning, manipulative, and evil, Opal is more kind-hearted and is working on the heroes' side.
  • Cool Mask: Wears one around her eyes.
  • Create Your Own Villain: It's revealed that the reason she turned to villainy was because Opal was far too overprotective of her.
  • Dark Is Evil: Her outfit is predominantly black.
  • Driven by Envy: She became a villain because she was jealous of Opal's status as The Ace and she knew that turning to villainy was one thing Opal would never do.
  • Enfant Terrible: One of the most malicious kid villains in this series to date.
  • Evil Genius: She always manages to stay one step ahead of the Mobile Unit up until "End of the Road". She even gets the idea to use Odd Squad's own MO of teamwork against them by having every single villain in the world team up to destroy them. It's very telling that fans voted her as the Oddest Villain Ever on the show's Instagram's "Odd Villain Madness" event, beating out Odd Todd.
  • Face–Heel Turn: She ended up doing this due to Opal's behavior towards her.
  • Gadgeteer Genius: Is very apt with technology, and once successfully hacked OSMU's van. In "Odd in 60 Seconds", she also manages to get to the mega-computer and extract info about every known villain worldwide, without anyone detecting her.
  • Heel–Face Turn: She ends up reforming in the Season 3 finale after Opal convinces her that she can do great things just like her. By the end, she leaves with Opal to fix the damage she caused in various countries.
  • Invisibility Cloak: Dons one in "Odd in 60 Seconds".
  • It's Personal: While she's not above attacking the Main 4 in general, she has a grudge against Opal specifically.
  • Luke, I Am Your Father: She is revealed to be the younger sister of Opal, much to the agent's dismay.
  • Meaningful Name: Her alias of "The Shadow" is meant to represent both being stuck in her older sister Opal's shadow, and becoming a shadow of herself when turning to villainy.
  • Ominous Opera Cape: Has a long black one.
  • Rocket Boots: She wears a pair of these that have red-orange soles. They prove to be useful in "End of the Road" when entering the tornado.
  • Secret Identity: Of a sort. "The Shadow" could potentially be considered an identity that is created by Olizabeth, Opal's younger sister, but she doesn't swap between her "Shadow" alias and her "Olizabeth" one, instead staying as "The Shadow" up until the mid-season finale.
  • Smug Snake: There's rarely a moment when she isn't smug.
  • Villain Reveals the Secret: In "End of the Road", she reveals her true identity and her relationship to Opal to all of the other villains. Despite being related to someone working for Odd Squad, though, the Villain Network still sees her as a viable villainess and give her no criticism of any sort.
  • Villains Out Shopping: In "Slow Your Roll", she wants the Mobile Unit to give up because she has an eye doctor appointment she needs to get to. Eventually Brutus just decides to bring the optometrist to their Supervillain Lair, much to her chagrin.
  • Villain Team-Up: The trailer for Season 3's first half reveals that her overarching plan is to gather every villain from around the world to form a "Villain Network" in order to take down the Mobile Unit. The episode "Villain Networking", and her overall arc, expands on this concept.

Played by: Osias Reid
The Shadow's main henchman.

  • Dark Is Evil: Like his boss, he wears mostly black.
  • The Ditz: He's very ditzy in contrast to his boss.
  • The Dragon: Serves as this to The Shadow.
  • Enfant Terrible: Though not to the extent of The Shadow, he does have malicious intent.
  • Vile Villain, Laughable Lackey: Brutus is very loyal to The Shadow and is willing to carry out her orders as needed, but can be very dimwitted at times.

    Minor Villains 

Other Villains

    Other Characters 

Polly Graph
Played by: Ava Preston
The town's resident graph expert who is a reliable ally of Precinct 13579. She sells hot chocolate and lemonade, and has a very keen eye for quality.

  • Aloof Ally: Downplayed. Polly Graph isn't an employee of Odd Squad and doesn't fight oddness alongside agents, but is always willing to help agents when they come to her stand. She also comes to Precinct 13579 often to settle conflicts.
  • Girlish Pigtails: She often wears her hair in these, which are secured by pink bows.
  • Pink Means Feminine: She likes the color pink.
  • Punny Name: A polygraph is a lie detector, which references her knowledge and usage of graphs.
  • Put on a Bus: She doesn't have any physical speaking appearances after The Movie. However, a still image of her from "Disorder in the Court" appears in "Raising the Bar".
  • Quality over Quantity: Polly Graph prides herself on quality when it comes to her lemonade, and has a keen eye for it.
  • Secret Underground Passage: Polly houses the entrance to one leading to Precinct 13579's headquarters, which was dug by Ms. O.
  • Speaks Fluent Animal: In "Bad Lemonade", she learns how to speak pigeon, and summons a flock of them to drive Odd Todd away from his own stand.
  • Will Not Tell a Lie: In the original pilot for the show, Polly tells Olive and Otto that she's not the number hog, and pulls out a graph that shows how many times she's ever lied. The graph is completely empty.
  • Young Entrepreneur: She sells both hot chocolate and lemonade from a stand set up at the end of her driveway. "Bad Lemonade" reveals that she treats her sales as Serious Business and views her stand as a legitimate business.

Olympia's best friend from outside of Odd Squad, who is introduced in OddTube.

  • Best Friend: She is described as Olympia's best friend outside of work and is very supportive of her.
  • Canon Foreigner: She was created solely for the web series and isn't seen in the show.
  • Cloudcuckoolander's Minder: Subtly implied to be this for Olympia in "Pandas", since Olympia is a Genki Girl and a severe Workaholic.
  • Pink Means Feminine: She wears a pink shirt under a pair of overalls.
  • Single Serving Friend: While she does make brief cameos in OddTube via mentions (and also makes a cameo on the web series' website as a picture in Olympia's locker), "The Ball Pit" is her only physical appearance and she doesn't appear in the show. Despite this, she is referred to as one of Olympia's closest friends.

Big Red
Played by: Hayden Landolt
A civilian who is the inventor and builder of the Odd Squad tube system. He lived in Toronto back in 1870.

  • Fiery Redhead: He's a subversion, having red hair but being generally laid-back and mellow.
  • Gadgeteer Genius: He's the creator of the Odd Squad tube system, which he digs as a token of thanks to Oprah and O'Donahue for helping him get back his mailboxes.
  • Mistaken for Thief: He is initially suspected by Olga and O'Donahue as having stolen Oprah's fruit. However, he turns out to not be the culprit when he becomes a victim of the criminal's robbery and has some of his mailboxes stolen.
  • Red and Black and Evil All Over: Subverted. Big Red wears a red longcoat with a red belt and undershirt and wears a red-and-black fur collar, but isn't a villain nor is he evil — he's a victim of oddness who helps Oprah and O'Donahue out.
  • Tube Travel: He creates the Odd Squad tube system to repay Oprah and O'Donahue for helping him.
  • You Are the New Trend: Big Red having red hair and being the creator of Tube Travel for Precinct 13579's agents sparked a sort of unintentional trend where every tube operator at the precinct has red hair. Whether this is coincidence or it was intentional is unknown.

Coach Roberts
Played by: Darryl Hinds
The coach of the various Burly Bears sports teams in town whom Olive idolizes.

  • Beyond the Impossible: He's the coach of the Burly Bears basketball, soccer and hockey teams, among many other sports. How he has time to coach all of them is a mystery, but even in a show full of oddities, one can't deny that it's an impossible feat.
  • Butt-Monkey: He is a very frequent client of Precinct 13579, often having things stolen from him or being attacked by odd creatures.
  • Hologram: In "The Potato Ultimato", he appears as a hologram in the Cave of Your Least-Greatest Fears, begging Olive to help him out with his fifteen concurring games after all his players become hurt.
  • The Knights Who Say "Squee!": Downplayed. While he isn't a complete Fanboy like Otto, Coach Roberts enjoys Soundcheck and their music. Coincidentally enough, Olive, who idolizes him, ends up liking the band after also going to see a concert of theirs at the mall.
  • Mentor Archetype: It's revealed in "Disorder in the Court" that he is Olive's personal javelin coach, as she attends javelin practice with him.
  • Super Coach: He's very supportive of his teams. In the case of his basketball team, he manages to help them score a win when Olive takes the place of a few of his injured team members.

Delivery Debbie
Played by: Ashley Botting
The owner of Debbie's Pizzeria and a frequent client of Odd Squad.

  • 30 Minutes, or It's Free!: Debbie takes this Up to Eleven by promising that pizza is delivered to dine-in customers in one minute or less. However, when ordering delivery, this policy doesn't seem to apply.
  • Adults Are Useless: Largely averted. Debbie is one of the most intelligent adults on the show, but she isn't without her moments of idiocy, such as in "The Voice" when she doesn't suspect "Ms. O's" pizza delivery instructions to be faulty.
  • Alliterative Name: Delivery Debbie.
  • Bad "Bad Acting": While "Safe House in the Woods" reveals that she is taking acting classes, she turns out to be a terrible actor and fails in convincing Ozlyn to join the Security department.
  • Bad Luck Charm: In "Show Me the Money", Debbie has a string of bad luck caused by an unlucky nickel that Otis gives her in order to pay for his and Olympia's pizza as well as the latter's pack of gum. Once the nickel is off her person, the bad luck stops.
  • Crazy-Prepared: In addition to a fanny pack that she keeps on her at all times, Debbie also carries items in her pizza delivery bag that she sells to customers, such as a pencil, a pack of gum, and a pair of googly-eyes that doubles as a calculator.
  • Does Not Like Spam: While Debbie is (quite obviously) a fan of pizza, she refuses to eat pizza crusts.
  • Jingle: Her pizzeria has one, which Olive and Otto know by heart: "Call Delivery Debbie, the best pizza you'll find! Call Debbie, she's one of a kind! Order today!" It was later updated to say "four of a kind" with the addition of her clones, and the melody was reworked into the jingle for her and Doug's combined business as well as the jingle for Doug's standalone business later on.
  • Made of Iron: In Odd Squad: The Movie, Debbie manages to survive on nothing but a single large pizza with nothing to drink for a month, and while in a bad state of health, she is still alive and standing by the time Otis and Olympia happen upon her.
  • Me's a Crowd: In "Double Trouble", Debbie becomes overworked at her pizzeria and wishes that there were more of her to go around. She ends up inadvertently creating three clones of her which wreak havoc across town by way of delivering the wrong pizzas to the wrong customers. Eventually the clones are employed under the original Debbie, but aren't seen again in subsequent episodes.
  • Nervous Wreck: Becomes this in "The Breakfast Club" when she has to go and directly confront the titular villain group, complete with Acting Unnatural, to such an extent that she's unable to answer her phone and has to rely on Ms. O giving her a cue card.
  • Nice Girl: She's generally nice to Odd Squad and to her customers, and isn't even that much of a Jerkass towards her rival Doug.
  • Offscreen Teleportation: She has managed to pull this off in a few episodes, such as in "Oscar the Couch" and "The Breakfast Club".
  • Only Known by Their Nickname: Delivery Debbie is often referred to as "Debbie". On occasion, people will refer to her as "Delivery Debbie", but only Doug explicitly refers to her by her full first name, "Deborah", in "Safe House in the Woods".
  • Only Shop in Town: Debbie's Pizzeria is the only one of its kind in town.
  • Put on a Bus: She doesn't make any more appearances after Season 2, but her pizzeria does make a cameo in the Couch Gag of the Season 3 episode "The Thrill of the Face".
  • Red Is Heroic: Debbie wears predominantly red clothing, and is an ally of Odd Squad's.
  • Severely Specialized Store: At the end of "Mystic Egg Pizza", she and Doug set aside their rivalry and open up a restaurant that only sells one thing: egg salad pizzas. However, the store was dropped in future episodes.
  • The Rival: To Delivery Doug, who sells egg salad sandwiches. Although they eventually drop their rivalry by the events of "Mystic Egg Pizza".
  • Terrible Artist: While she is taking art classes as of "By the Book", her art still looks terrible, which doesn't help Olive's case. By "The Breakfast Club", however, she gets much better at drawing.
  • Written by Cast Member: "Safe House in the Woods" is written by Ashley Botting, who portrays Debbie. Likewise, Debbie herself also makes a prominent appearance in the episode.

    Movie-Exclusive Characters 

Weird Tom
Click to see him as an Odd Squad agent-in-training. 
Click to see him as an honorary Odd Squad agent. 
Played by: Jack McBrayer
The leader of the Weird Team. A former agent-in-training of Odd Squad turned traitor, he seeks revenge on the organization for not being able to become an agent. Using his Hologram-inator, he leads his team on a mission to prove themselves as more than just a mere ineffective knockoff of Odd Squad and put them out of business for good.

  • Adults Dressed as Children: At the end of the movie, he is named an honorary Odd Squad agent and is shown dressed in an Investigation agent uniform. However, it's too small for him, and Oprah comments that Odd Squad only has kids' sizes.
  • Became Their Own Antithesis: Weird Tom didn't become an antithesis — he was an antithesis to begin with. Unlike other Odd Squad agents that take their time solving cases and think their courses of action through, he prefers to take a "shortcut", as he so calls it, blasting everything in sight without thinking of the consequences.
  • Catchphrase: "Sha-boom!"
  • Child Hater: He tends to view children as inferior to adults, which is why the Weird Team is completely child-free.
  • Cool Car: He and the rest of the Weird Team have a sleek red-and-white Dodge Caravan that they use to drive around town and help out clients who have been affected by oddness. It's a contrast to both Odd Squad's tiny toy cars, which can only fit one person and drive very slowly, and to the Tube Travel system they use to go from their underground Headquarters to their desired location aboveground.
  • Evil Counterpart: To Oprah, being the leader of a team that solves odd things with the use of gadgets. However, whereas Oprah is more benevolent, believing in Team Spirit and solving problems by thinking things through, Weird Tom doesn't believe in teamwork and believes that taking quick shortcuts is the best way to solve problems. In addition, he has "Weird" for a title as a direct contrast to the "Agent" title most employees of Odd Squad have.
    • To an extent, he's also one to the Big O, with the climax of the movie implying that he runs every single Weird Team precinct in the world much like how the Big O runs every single Odd Squad precinct in the world. However, while the Big O is a Pointy-Haired Boss who's also a child, Weird Tom is much more competent when it comes to leading his own precinct, and is an adult.
  • Face–Heel Turn: He was an agent-in-training back in 1983 (before Oprah became an Odd Squad Director), having just graduated from the Odd Squad Academy and bearing the name "Agent Om". However, when Oprah disagreed with him on his method of solving cases (blasting everything in sight without stopping to think) and suggested he go back to the Academy for more training, he took offense to it and decided to become a villain instead.
  • Gadgeteer Genius: He managed to build a Hologram-inator using a folder of plans for the gadget that Precinct 13579 had stored in a dark room. However, it took him 34 years to do so.
  • Heel–Face Turn: Ends up pulling one of these when he inadvertently lets the Daves escape from their room. By the end of the movie, he is named an honorary agent of Odd Squad.
  • I Work Alone: He doesn't believe in teamwork, which is quite ironic given that his organization's name is Weird Team (a fact that he lampshades).
    Weird Tom: [to Bradley] You see, I don't believe in "teamwork". I tell my people, "Don't talk to other folks. Don't help other folks." If you have a problem, fix it yourself!
  • Manipulative Bastard: When Odd Squad agents aren't playing right into his hands, he's more than capable of manipulating them, slandering them on public broadcast and making sure he and his team gets a jump on them when it comes to solving cases and helping clients. It helps that he's a former employee of the organization.
  • Near-Villain Victory: He succeeds in running Odd Squad out of business, if only because the Big O makes Odd Squad surrender instead of trying to fight back. His reign lasts for a month before Olympia and Otis decide to take action and end up working to take back their precinct and restore the organization, which they, along with Olive and Otto, end up doing by the end of the movie.
  • Shock and Awe: He has a lightning motif going on, what with the Weird Team's logo being a hand with lightning bolts shooting out of its index finger and his Hologram-inator firing a beam similar in color and shape to a lightning bolt.
  • Vague Age: Averted. He was 12 years old in 1983, and the gadget he stole plans for took 34 years to complete. Considering the movie takes place in 2016 (despite the fact the gadget would have been completed in 2017 if it took 34 years), this would make him roughly 45 years old.
  • Villain Song: "Something Weird Has Just Happened", a song that's basically one long diss track aimed at Odd Squad.
    "Can't say I blame you guys for trying to be heroes, but maybe you should wait until you grow up."
  • Villain with Good Publicity: He constantly steals Odd Squad's thunder and helps out clients long before they can, causing the townsfolk to start admiring him and the rest of the Weird Team. However, it's tarnished when it's revealed that he's not solving problems at all, and is instead merely covering them up.
  • Vocal Dissonance: Even as a 12-year-old kid, Tom still has the same voice he has as an adult, with Jack McBrayer providing his voice rather than Sam Ashe Arnold, the actor portraying him as a child.
  • Would Hurt a Child: He has absolutely no qualms about stripping Odd Squad agents of their jobs and livelihoods, nor does he have any qualms about slandering them in public view of the townsfolk and making them seem like odd villains. Never mind the fact that he views children in general as brainless inferiors.

Weird Emily
Click to see her in civilian wear. 
Played by: Hannah Simone
Weird Tom's faithful, but submissive, second-in-command.

  • Cowardly Lion: While she has no problem antagonizing Odd Squad, she is very cowardly to such a point where she frequents a Curl Up and Cry Room that Weird Team's headquarters just so happens to have as a remnant from taking over Precinct 13579. She is also very submissive when it comes to Weird Tom, always following his orders and never showing any sort of disobedience out of fear of the consequences.
  • The Dragon: Is this to Weird Tom. However, it's left ambiguous if she serves this role to the Weird Team in general.
  • Heel–Face Turn: Pulls one at the end of the movie.
  • Prim and Proper Bun: She sports one on her head.
  • Would Hurt a Child: Much like Weird Tom, she has no issue with driving Odd Squad out of business and is usually right there with her superior mocking them.


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