Martin is shown to be a cruel and dangerous man with a manipulative, sociopathic personality. He is shown to have the ability to talk himself out of trouble and appears to be highly intelligent. Martin appears to not be above committing cold blooded murder as shown when he nearly killed Judith in order to escape from Tyreese, and also suggesting they kill Bob after he taunted him and his group about his bite and also showed a desire to kill the members of Rick's group in the church. 