 He carried out the robberies on Friday nights just before closing time, believing this minimized the number of customers present and maximized the cash on hand.Characteristically he wore a frightening face mask (such as a character from a horror film), making sure it fit snugly to hide the color of his skin, and wore bulky clothes to hide his build.Entering the bank carrying a pistol, he moved in a "crab-like" manner to confuse estimates of his height.