Crogg the Blind
He was once the ruler of Mount Thug, but was captured in a Deathmaw raid. Before being captured he ripped apart a dozen of his assailants, so the Tyrant of the tribe had his single eye put out with a red hot spear. 
However, Crogg is cunning, and his remaining senses are improving every year. No longer as helpless as his captors would believe, he will soon reap a bloody revenge upon the Deathmaw tribe.