Board Thread:Mortal Kombat Wiki/@comment-24938557-20150730183610/@comment-422853-20150906225124

According to his page, wearing the mask allowed him to control his demonic rage and fight with a more disciplined style, while removing it caused him to go into Oni style where he loses his focus and attacks with murderous insanity. I guess for the comics he chose not to wear the mask so he could go all out on Hanzo, who escaped despite his and Moloch's efforts. Ironic, considering they bested Scorpion in Deadly Alliance.

Aside from maybe Hsu Hao, it's kinda hard to determine who the weakest character of the series really is. A lot of the lesser used kombatants tend to have no feats or anything.