The graveyard book

at first I thought he was a divine being...like an angel or something...but that part when he said that he had done things far worse that the ghouls had done, that confused me. and also that part when he did not dance along with the other ghost during the Macabray? It gave me the impression that he was not a ghost but a sort of keeper of souls?...like death minus the scythe...honestly, sir... I have no idea. (^_^)