VIDEO : Andrew Lincoln Is Afraid Rick Might Die On 'The Walking Dead'

For fans of 'The Walking Dead,' it's hard to imagine the show without Rick Grimes. Many actually believe that Rick is the only character on 'The Walking Dead' who could never die. Andrew Lincoln - who portrays the intimidating leader - seems to think otherwise. ?I?d like to think there?s a bit of job security there, But then suddenly Negan turns up, with that crazy baseball bat, and all bets are off. We?re all expendable on this show,? Lincoln said. The finale of season 7 of 'The Walking Dead' airs Sunday, April 2.