Terence Fletcher

Terence Fletcher is the main antagonist of the 2014 music drama film ''Whiplash. '' Fletcher is the maestro of the jazz band in the Shaffer Conservatory. He is portrayed by J.K. Simmons.

Personality
Terence Fletcher is a unforgivingly sadistic perfectionist who will do anything to push students past the limits expected of them. Fletcher particularly takes interest in bullying Andrew Neyman throughout the film and is not afraid to throw ethnic and personal epiphets against him. Fletcher is also shown to be very clever and manipulative. Fletcher knew that Andrew was the student who got him fired from the conservatory and tricks him into thinking that he will give him another chance in his new band.

Trivia

 * According to iMDB, J.K. Simmons and Miles Teller filmed several takes for the slapping scene with Simmons' character only miming a slap.  It is only in the final take when Simmons decided to film the scene with a real, genuine slap to Teller.
 * Director Damien Chazelle based Fletcher on a real-life conductor of his high school band who intimidated him.