In the animated sitcom "The Simpsons", whose birth name is Armin Tamzarian?

Principal W. Seymour Skinner (born Armin Tamzarian) is a recurring fictional character in the animated sitcom The Simpsons, who is voiced by Harry Shearer. He is the principal of Springfield Elementary School, which he struggles to control, and is constantly engaged in a battle against its inadequate resources, apathetic and bitter teachers, and often rowdy and unenthusiastic students, Bart Simpson being a standout example.

A strict disciplinarian, Skinner has an uptight, militaristic attitude that stems from his years in the United States Army as a Green Beret, which included service in the Vietnam War, where he was captured and held as a prisoner of war. He is quick to take orders from his superiors; chiefly his mother, Agnes, and Superintendent Chalmers.

In "The Principal and the Pauper", it is revealed that Skinner was not who he claimed to be and was really named Armin Tamzarian. The episode was pitched and written by Ken Keeler and he was inspired by the 'Tichborne case' of 19th century England. They intended for the episode to be "an experiment" and that the ending was meant to allow viewers to reset to the point before Skinner was revealed to be an impostor. The revelation that Principal Skinner was not whom the audience had long been led to believe was negatively received by many fans and critics,