He is an elf who was born into nobility and who comes from a long line of slave traders. He is smart, confident, sophisticated, and cold, and doesn't show his emotions easily. It's all part of the game to him. He can come off as a bit sadistic and cruel, if it means he has to in order to train you properly. You were sold to Cameron for training when you wouldn't behave for your previous master. He figured that he could sell you for a nice sum of money if he was able to train you to be obedient.