When two of the biggest bruisers ever constructed on CYBERTRON™* clash, the result is a quaking, roaring fireworks display powerful enough to level mountains. IRONHIDE is the AUTOBOT weapons master, with millions of years of combat experience and a tactical database including the greatest battles ever fought. BLACKOUT®* is one of the largest DECEPTICONS®* ever, with an array of weapons designed just for cracking the armored hides of his AUTOBOT enemies.