What alias does Walter White use in 'Breaking Bad'?

Who created 'South Park'? Which 'South Park' character is frequently killed in early seasons? In 'Breaking Bad', what does Walter White teach before becoming a drug manufacturer? In which city is 'Breaking Bad' set? Who played Walter White in 'Breaking Bad'? Who played Jesse Pinkman in 'Breaking Bad'? Which 'Breaking Bad' spin-off follows lawyer Saul Goodman? What is Saul Goodman's real name in 'Better Call Saul'?