what was the role played by the character mentioned at the start?
Quinn is introduced as the leader of the cheerleading (The cheerios) squad at William McKinley High School,coached by Sue Sylvester
Quinn Fabray
Quinn is introduced as the leader of the cheerleading (The cheerios) squad at William McKinley High School,coached by Sue Sylvester 
when does quinn have her baby in glee Season 1 what is this series mentioned above? An American musical comedy-drama television series.
wiki:14361617
Quinn Fabray [SEP] Season 1
Quinn is introduced as the leader of the cheerleading (The cheerios) squad at William McKinley High School,coached by Sue Sylvester (Jane Lynch). She comes from a conservative Christian family, and is president of the celibacy club. When her boyfriend Finn Hudson (Cory Monteith) joins the glee club, New Directions, Quinn worries about his interaction with the group's star, Rachel Berry (Lea Michele), and joins New Directions herself along with her fellow Cheerios Santana Lopez (Naya Rivera) and Brittany Pierce (Heather Morris). Sue then enlists the three of them to help her destroy the glee club from the inside. Upon discovering that she is pregnant, Quinn convinces Finn that he is the father, despite the fact that they never actually had sex.