<P> The series also features several recurring characters who are students and staff members at Greendale . </P> <P> Dr. Ian Duncan (John Oliver) is a British - born professor of psychology at Greendale . Duncan seems to be a reasonably competent professor and therapist, but isn't above scheming for personal gain like trying to con Jeff out of his Lexus or exploiting Abed's issues to advance his career . Though Jeff once successfully represented him as a lawyer by exploiting the legal system, Dr. Duncan refuses to help him cheat on principle . He provides free therapy to several students including Britta and, at one point, hopes to write about Abed's issues for a book deal . He also has a rivalry with Señor Chang and cheerfully antagonizes Chang over being fired and subsequently becoming a student at Greendale . At the end of the first season, he is suspended by Dean Pelton for his drunken behavior at a school function, prompting Chang to punch Dr. Duncan in the face . Because of this, he gets a restraining order against Chang, while chasing him around and preventing him from getting to places . After Greendale suspended Professor Bauer, he took over her anthropology class, despite his complete lack of knowledge about the subject . In "Abed's Uncontrollable Christmas," Dr. Duncan played a prominent role in guiding Abed through his suppressed feelings about Christmas . It is also implied in that episode that Dr. Duncan had an unhappy childhood growing up in a dysfunctional family in Islington . As is alluded to several times over the course of his appearances, Dr. Duncan appears to have a drinking problem . Dr. Duncan did not appear in the third season, although Britta is now enrolled in his Intro to Psychology class, and his name is seen on the cover of her textbook as the author . The fourth season makes reference to his unexplained disappearance when Troy asks the group if anyone had seen him lately . </P> <P> In the Season 5 episode "Basic Intergluteal Numismatics", Dr. Duncan returns, explaining that he had been taking care of his ailing mother, although he stopped because he had "put in (his) time". It is clear that his alcoholism and infatuation with Britta have both returned . He gives up on pursuing Britta after sharing an intimate conversation with her in "Bondage and Beta Male Sexuality". </P> <P> Prof. Michelle Slater (Lauren Stamile) is a statistics professor at Greendale . She had a strict policy against dating students, but became romantically involved with Jeff, after he begged her to sleep with him during a Halloween party ("Introduction to Statistics"). She and Jeff share a similarly tough sense of humor and cynicism . Later on, she breaks off their relationship . She later reacquires interest in Jeff, consequently developing a rivalry with Britta for his attention ("Pascal's Triangle Revisited"). Jeff later states that if he did pursue a relationship with her, it would evolve him, while a relationship with Britta would help him know more about who he really is . In addition to Jeff, she draws interest from other members of the faculty such as Señor Chang and Dr. Duncan, who have made comically bad attempts to seduce her . It is later noted by Troy and Abed's closed - circuit television show of the student body elections ("Intro to Political Science") that she is actually missing . </P>

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