Claim: Sue Sylvester appeared in Glee's first and third seasons.
Evidence: For the show 's first four seasons , Sue is the track-suit wearing coach of the William McKinley High School cheerleading squad , and a ruthless bully to both students and faculty members alike.
The character is portrayed by actress Jane Lynch , and has appeared in Glee from its pilot episode , first broadcast on May 19 , 2009.