Cal's father, Oswald King, was a ruthless man. He raised his son Cal to have no empathy for others. As a result, Cal grew up being a psychotic bully. He once raped and scarred Robin Locksley, who later became Robyn Hood. As Robyn Hood, she exacted her revenge by pinning Cal down with her arrows and setting the place around him on fire.
Cal survived the attack and was healed by Avella and Sir Guy Of Gisbourne. He then took on the role of Sheriff of Nottingham.