Sanders is a huge man, 6' 6", and his eerie, glowing sapphire eye and very observant presence make him a really intimidating person most of the time.
The magical eye was the result of a dreadful accident many years ago that could have taken his head off when a rope snapped under heavy load, it still smashed his face and eye into pulp though.
He was lucky that a Xixichil surgeon was on board and saved his life, and gave him sight back. Those strange insect-beings have very peculiar ideas of aesthetics however, and always like to tinker...so the sapphire "eye" he grafted into Sander's head not only lets him see, he can also see in the dark, judge a man's soul for good or evil and give insights into a person or spot things others may not notice, very useful when dealing with crew and potential recruits.
