Bryan Cranston dropped meth lab sized bombshell on the whole Breaking Bad ending this week, by suggesting that Walter White may well not be dead. The drug kingpin appeared to run out of luck at the end of AMC's classic drama, though whilst promoting his new action flick Godzilla on Thursday (May 29, 2014), Cranston told CNN's Ashleigh Banfield that Heisenberg may have lived through those final moments.

Bryan CranstonBryan Cranston in the Breaking Bad Finale

In the concluding moments of Breaking Bad, cancer-sufferer Walter - bleeding from a gunshot - collapsed on the floor of a DIY meth lab as the police narrowed in on him. However, Cranston suggested the chemistry-teacher may have survived.

"You never saw a bag zip up or anything," he said, smiling. "Never say never."

More: The very best Breaking Bad moments - staff picks

Later in the same interview, Cranston discussed playing Patrick Crump on The X-Files, the role that would eventually land him the role of Walter White. "I just happened to have the right hair," he said.

There has been some speculation that Cranston may appear briefly in AMC's Breaking Bad prequel Better Call Saul - a comedy-drama set to air in November 2014. Vince Gilligan's show will focus on the life of Bob Oderkirk's character Saul Goodman before his endeavours with Walter and Jesse Pinkman. Jonathan Banks will reprise his role as Mike Ehrmantraut - Saul's private investigator - from the original series.

Made on a budget of $160 million, Godzilla has made $327 million at the global box office so far. It also garnered strong reviews.

More: The alternate ending for Breaking Bad