title: Emma Pillsbury
context: Emma Pillsbury Schuester (previously Pillsbury-Howell) is a fictional character from the Fox musical comedy-drama series Glee. Portrayed by actress Jayma Mays, Emma has appeared in Glee from its pilot episode, first broadcast on May 19, 2009. Emma was developed by Glee creators Ryan Murphy, Brad Falchuk and Ian Brennan. She is a guidance counselor at the fictional William McKinley High School in Lima, Ohio where the series is set. Emma suffers from obsessive-compulsive disorder and has romantic feelings for glee club director Will Schuester (Matthew Morrison), but becomes engaged to football coach Ken Tanaka (Patrick Gallagher) as Will is married. Ken ultimately breaks up with her on their wedding day because of her feelings for Will, and when Will leaves his wife Terri (Jessalyn Gilsig), he and Emma share a kiss. Their relationship is short-lived, and in the second season, Emma and her dentist boyfriend Carl Howell (John Stamos) marry in Las Vegas. The wedding is later annulled as it was unconsummated. At the beginning of the third season, she and Will are living together; they become engaged shortly after New Years, and consummate their relationship near the end of the school year. Emma leaves Will at the altar midway through the fourth season, but the two later reconcile and marry in the season finale. She becomes pregnant during the middle of the fifth season.
question: When did the character Emma Pillsbury Schuester first appear on Glee?
answers: May 19, 2009