He looks after warriors, particularly those who die in his service, and rules the present Age of the world.
He needs revitalizing each morning with fresh hearts still pumping blood. Best stick to orange juice.
But he wasn’t always so demanding. In fact he started off as the lowly non-entity NANAUTZIN, and only got to his present position through good luck and fortitude. The leap from Scabby God of Nothing to Sun God of Everything went straight to his head and he refused to move unless all the other Gods sacrificed themselves to him.