described as this:

Each character will have a rage meter, just underneath their health meter. You build your rage meter by taking and dealing damage, or by blocking opponent strikes. As the meter fills up, you can use breaks to block opponent strikes. If you let the rage meter build up completely, however, you can enter rage mode (by pressing the shoulder buttons). Here, you'll have roughly six seconds to kick as much butt as you possibly can. Your attacks will be more powerful and, more importantly, unblockable so, as long as you can make contact, you'll be pounding your foe into dust. Just watch out, because his or her rage meter will be similarly building--as a result, you'll have to use your rage meter at the right moment (preferably to finish off your opponent). Fail to do so, and you might find yourself on the receiving end of a rage flurry.


Sounds interesting, also does you can use acquired rage for a combo breaker at the risk of not filling it quickly? The description isn't fully detailed.

This information is actually on Gamespot, it includes a Joker gameplay review (describes several special moves), and a fatality description: click here