Grindstone

Mason Slate is the owner of The Quarry night club.

Early Life
At age 12, hard spots started appearing on Mason's skin. These were believed to be mysterious scabs at first, but they wouldnt go away and more kept coming. Over time they became harder and covered more of his body. By 15 he was entirely covered in a thick layer of stone.

As a teenager Mason was quite adept at reading people and convincing them to do what he wanted. As an adult he used these skills to earn favors from those with power and gain a small fortune.

The Quarry
Mason used his wealth to open a nightclub called The Quarry. He uses the club to keep his influence over others and as a base for his schemes.

Stone Skin
Grindstone has skin made of stone. This gives him superhuman endurance and enhances his strength.

Intellect
Grindstone is a very intelligent man. He is a skilled businessman and is not easily outsmarted.