Walter White is a fictional character from the critically acclaimed television series Breaking Bad. He starts as a high school chemistry teacher who turns to cooking methamphetamine after being diagnosed with terminal lung cancer, aiming to secure his family's financial future. As he descends into the criminal underworld, Walter transforms from a mild-mannered educator into a ruthless drug lord known as Heisenberg. His journey explores themes of morality, family, and the consequences of choices. Walter's character is portrayed by Bryan Cranston, whose performance earned him multiple awards, making Walter White one of the most iconic characters in television history.