Matt Damon is no stranger to making drastic changes to his appearances when called for, having lost weight for “The Talented Mr. Ripley” and bulking up to play Jason Bourne for three action-heavy installments.

But are bets are off in “Elysium,” director Neill Blomkamp’s follow-up to 2009’s sci-fi masterpiece, “District 9.”

Here’s my interview with Damon, who made his first-ever Comic-Con appearance to promote “Elysium.”