Sue Sylvester appeared in Glee's first and third seasons.
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 .	cheerleading squad	Cheerleader
The character is portrayed by actress Jane Lynch , and has appeared in Glee from its pilot episode , first broadcast on May 19 , 2009 .	Glee	Glee (TV series)	Jane Lynch	Jane Lynch	pilot episode	Pilot (Glee)	pilot	pilot episode
