The run start by introducing two main antagonists , an aging politician , who is using a strange portal to enter other people 's minds and commit crimes , and Mako , a cannibalistic mage who devour other magicians in order to obtain their power . Constantine 's attempt to play them off one another only succeed in making them join forces in a further plot . Constantine then trap them both with considerable ease , and questions how this have been so easy . It then become apparent that he have been manipulated by the ' Golden Child ' , his twin who did not survive childbirth , and have been manipulating events for the whole of the series , including his battle with cancer and many other events . He decline his twin 's offer to merge souls , suspicious that his twin have been weakening his will in past years to make him accept this offer , choosing instead to take control of his own destiny .