Kraz Eene

Kraz Eene was a knight in the Jedi Order, but never made much of a name for himself. He was an acceptable soldier during the Clone Wars, but suffered a catastrophic injury when his AT-TE was struck by a bomber. His face was damaged beyond repair, replaced with a ghoulish cybernetic mask that was all the medics could find.
In his state of recovery, Kraz had a vision from the Force. He saw the clone troopers of the Grand Army of the Republic turn on their generals. The Jedi were executed en masse before his eyes. The terror of the vision ripped through Kraz Eene and sent him on a murderous rampage. The entirety of his Drill Company was slain by his blade before he fled. Kraz Eene was not heard from until he was once again encountered at Elphrona Temple.