Alexander Pierce (Marvel Cinematic Universe)

Alexander Pierce is the true main antagonist of Captain America: The Winter Soldier.

He is portrayed by actor Robert Redford.

Biography
He is a senior leader of S.H.I.E.L.D., a member of the World Security Council and an old comrade of Nick Fury. The quotes, "To build a better world sometimes means tearing the old one down. And that makes enemies", hints at his villainous side.

He plans Operation: Insight to wipe out 20 million on the East Coast's to help establish their new world order. He is killed at by Nick Fury at the end.

Trivia

 * In the comics, Pierce is a much younger field agent. Robert Redford let slip that he accepted the role because he wanted to portray a villain; leading some to speculate that Pierce is a cover for Aleksander Lukin, who is the man who controlled the Winter Soldier in the comic books.
 * In an interview with USA Today, Samuel L. Jackson revealed that Alexander Pierce is a member of the World Security Council, but was not present during the Avengers.