What film marked the debut of Clint Eastwood's character 'the Man with No Name'?

A Fistful of Dollars introduces Eastwood's portrayal of the Man with No Name. The story as well as its lead role were inspired by the Akira Kurosawa film Yojimbo (1961). Here, in Sergio Leone's "Dollars Trilogy" of Spaghetti Western films, The Man with No Name is the protagonist portrayed by Clint Eastwood.

In the first film, A Fistful of Dollars (1964), the Man with No Name comes to San Miguel, a Mexican border town divided between warring gangs, the Baxters and the Rojos. Quickly realizing that in such a situation a man could make a great deal of money, Eastwood's character begins to play each side against the other. The Man with No Name delights in seeking his own benefit, even when it means anger and destruction for himself and those around him.

His willingness to defy the odds by the use of his cleverness and combative skills is a sure sign that he is a totally self reliant man. He is willing do almost anything to be the final winner of the contest where life and death comes into play.

Next, with the film, For a Few Dollars More (1965), it is a pulse-pounding follow-up to Sergio Leone's A Fistful of Dollars. It brings back Clint Eastwood as the serape-clad, cigar-chewing Man With No Name. Finally, The Good, the Bad and the Ugly is a 1966 epic; it is the last and the best installment of Sergio Leone's so-called Dollars trilogy.