Walter White (Breaking Bad)
Walt was a chemistry genius who helped start up a big science company, Gray Matter Technologies, before he left the company. He later becomes a chemistry teacher who doesn't make enough money and has to work at a car wash, which he hates. Walt learns he has lung cancer and is about to die soon. For Walt's 50th birthday, his brother-in-law Hank Schrader, who works for the Drug Enforcement Administration (DEA), takes Walt to see his job of busting drug dealers. Walt is interested and wants to start cooking meth to make enough money for his family before he dies of cancer. He meets Jesse Pinkman, a drug dealer who used to be his student, and asks to be partners.