How does the author describe Oscar Charleston in the biography, Oscar Charleston: Was Cobb “The White Charleston”?

Holway calls Charleston "a roundfaced, barrel-chested Hercules with smoldering leonine eyes." The players he interviews comment on those eyes, with Ted Page summing up their views: "Vicious eyes. Steel-gray, like a cat. Greenish-gray. And they were steel." According to those Holway quotes, Charleston was funny and knew how to joke around and have a good time, but that always behind the fun were his cold, deadly eyes.