G.I. Joe: A Real American Hero: Mass Device DVD Rating : 826663114393 Shout ! Factory Television, Action/Adventure, Cartoons, Animated Characters, Animated Worlds, Television Shows G.I. Joe: A Real American Hero: Mass Device DVD Description In this collection of five G.I. JOE episodes, Cobra Commander introduces the world to the M.A.S.S. Device, a powerful teleporter that he will use to conquer the globe--unless, that is, the G.I. Joe soldiers can find the materials they need to create one of their own.