Heisenberg is an alias of Bryan Cranston's Breaking Bad character.
Bryan Cranston . He is best known for portraying Walter White on the AMC crime drama series Breaking Bad , Hal on the Fox comedy series Malcolm in the Middle , and Dr. Tim Whatley in five episodes of the NBC comedy series Seinfeld . Walter Hartwell White Sr. , also known by his clandestine alias Heisenberg , is a fictional character and the main protagonist of Breaking Bad .