Nobody answered my question...how did Braig get his scars????
During the fight with him and Terra, Terra gave into the darkness at MX request and used it to finish the battle. He first shot Braig pointblank in the eye with a darkness blast, then used it again to free MX from his sackles. Braig moved his head so that he wouldn't lose the other eye...but got his face scarred by the blast.
It is quite sad...and quite nasty. Even for a Kingdom Hearts game I was suprirsed by what they did. Braig needed hugs. Totally.