Breaking Bad

Breaking Bad creator Vince Gilligan cast Bryan Cranston for the role of Walter White based on having worked with him in the "Drive" episode of the science fiction television series The X-Files, on which Gilligan worked as a writer.

Gilligan said the character had to be simultaneously loathsome and sympathetic, and that "Bryan alone was the only actor who could do that, who could pull off that trick.

I have no idea how he does it." AMC officials, who were initially reluctant with the casting choice, having known Cranston only as the over-the-top character Hal on the comedy series Malcolm in the Middle, approached actors John Cusack and Matthew Broderick about the role.

When both actors declined, the executives were persuaded to cast Cranston after seeing his X-Files episode.

When Gilligan left much of Walter's past unexplained during the development of the series, the actor wrote his own backstory for the character.

At the start of the show, Cranston gained 10 pounds to reflect the character's personal decline, and had the natural red highlights of his hair dyed brown.