: Initially the leader of the popular "Untouchables" group, she shows more depth in later seasons. Kedar Williams-Stirling Jackson Marchetti
: An awkward teenager who starts an underground sex therapy clinic at school. Gillian Anderson Dr. Jean Milburn : Otis's mother and a professional sex therapist. Ncuti Gatwa Eric Effiong sex education cast
Casting Gillian Anderson as Otis’s mother, the hyper-sex-positive sex therapist Dr. Jean Milburn, was a stroke of genius. Known previously for the stoic Dana Scully in *The X : Initially the leader of the popular "Untouchables"