<P> Agents are typically assigned cases by their boss, Ms. O (Millie Davis), and travel via a system of interconnected tubes to get to their destinations . They deduce the solution to the problem or how to detain the perpetrator by using basic mathematical principles that are typically the focus of the episode . Often, they cannot solve the problem at the scene and must go back to their precinct's headquarters or to the "Mathroom" (T.J. McGibbon), a talking, sentient room that can display their information in front of them to help them see connections and better solve their case . Along with math, agents also use "gadgets" designed by the scientists; in the first season, Agent Oscar (Sean Michael Kyer) heads the lab, gaining an assistant, Agent Oona (Olivia Presti), in early season two who eventually takes over the lab . The characters also have to deal with a variety of recurring villains who often put a mathematical spin on their plots . </P> <Ul> <Li> Agent Olive (Dalila Bela, season 1): Referred to as a longtime employee of the Odd Squad, Olive began season 1 of the series adapting to working with and training her new partner, Otto . Olive is usually calm, brisk, and serious . She has a morbid fear of pies, which she acquired after saving her organization's building from a pie - related disaster instigated by her previous partner, a very gifted agent named Todd who was fired from the organization for misconduct and went on to pursue villainy . In the season 1 finale, Olive departs the series along with her partner, Otto, to run a different Odd Squad precinct as Ms. O . </Li> <Li> Agent Otto (Filip Geljo, season 1): Olive's partner, and in the first episode the newest employee of the organization . In contrast to his partner's more serious demeanor and personality, he is a more lenient, laid - back employee . Despite his lack of experience with his job, Otto frequently uncovers the facts needed to solve the case at hand, even doing so in the absence of his more experienced partner, proving his worth as an agent . In the season 1 finale, Otto departs the series to run another Odd Squad office as Mr. O with his partner, Olive . </Li> <Li> Ms. O / Oprah (Millie Davis, seasons 1--): "Ms. O" is the title of any female head of an Odd Squad division, but in - show, the title most often refers to the head of the division featured on the show . Ms. O is a very strict boss . She has the tendency to yell (a habit seen less frequently as the series progresses) and is often seen sipping a juice box . Despite appearing younger than most of the agents, Ms. O has worked for Odd Squad for several decades; her actual age remains a mystery . In - show, it is revealed that her actual name is "Oprah". </Li> <Li> Agent Oscar (Sean Michael Kyer, seasons 1--2): Oscar was the precinct's head scientist, in charge of the precinct's laboratory . Other employees go to him for technical solutions to their problems . Oscar is depicted as being very intelligent and having a quirky and goofy personality . He departed from the series in the Season 2 episode "Oscar Strikes Back", where he became the president of the organization's science division after the former president was dismissed for misconduct . </Li> <Li> Agent Olympia (Anna Cathcart, season 2): A new agent, introduced in the first episode of season 2, who joins the series to fill in the opening left by the departure of Olive in the season 1 finale . She was given early graduation from the organization's training Academy because Ms. O wanted her in the equivalent of Otto's position . She is depicted as being very social and outgoing, and having a generally happy and carefree personality . </Li> <Li> Agent Otis (Isaac Kragten, season 2): A new agent, introduced at the start of season 2, who joins to fill the opening left by the departure of Otto in the season 1 finale . Unlike his partner, he has a more serious and socially - reserved personality . There are no records of him attending the organization's "Academy", but he is depicted as being the more seasoned member of the new team . Possibly as part of his more socially - reserved demeanor, he has several unusual dislikes; initially he had a dislike of chewing gum, and once he refused a pizza party offered to him as a reward for his productivity, claiming to not like the ingredients of a pizza . </Li> <Li> Agent Oona (Olivia Presti, season 2): The precinct's head scientist who is in charge of the laboratory, taking the role from Oscar after his departure from the series in the Season 2 episode "Oscar Strikes Back". Like her predecessor, she is depicted as having a quirky personality . </Li> </Ul> <Li> Agent Olive (Dalila Bela, season 1): Referred to as a longtime employee of the Odd Squad, Olive began season 1 of the series adapting to working with and training her new partner, Otto . Olive is usually calm, brisk, and serious . She has a morbid fear of pies, which she acquired after saving her organization's building from a pie - related disaster instigated by her previous partner, a very gifted agent named Todd who was fired from the organization for misconduct and went on to pursue villainy . In the season 1 finale, Olive departs the series along with her partner, Otto, to run a different Odd Squad precinct as Ms. O . </Li> <Li> Agent Otto (Filip Geljo, season 1): Olive's partner, and in the first episode the newest employee of the organization . In contrast to his partner's more serious demeanor and personality, he is a more lenient, laid - back employee . Despite his lack of experience with his job, Otto frequently uncovers the facts needed to solve the case at hand, even doing so in the absence of his more experienced partner, proving his worth as an agent . In the season 1 finale, Otto departs the series to run another Odd Squad office as Mr. O with his partner, Olive . </Li>

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