He is seen as a ruler and guardian of the otherworld, and his dominion is referred by such names as (or , 'Isle of Apple Trees'), ('Plain of Delights'), or ('Land of Promise'). He is described as over-king of the surviving Tuatha Dé after the advent of humans (Milesians), and uses the mist of invisibility () to cloak the whereabouts of his home as well as the dwellings of the others.
He is seen as a ruler and guardian of the otherworld, and his dominion is referred by such names as (or , 'Isle of Apple Trees'), ('Plain of Delights'), or ('Land of Promise'). He is described as over-king of the surviving Tuatha Dé after the advent of humans (Milesians), and uses the mist of invisibility () to cloak the whereabouts of his home as well as the dwellings of the others.