The Ainur (Q. ‘Holy Ones’; sing. Ainu) were the angelic spirits and offspring of the thought of Ilúvatar, brought into being before the Beginning. They participated in the Creation and made and ordered the World (Arda) in preparation for the arrival of the Children of Ilúvatar. Though they are beings of spirit with no innate forms, they had kinship with each other and had gender. While most of the Ainur dwelt with Ilúvatar, some – such as the Valar and Maiar – came to Eä to fulfill the Ainulindalë, and some others – Ungoliant and the Balrogs – came to hinder the Ainulindalë and destroy the Light. Of the latter group, Melkor and Sauron were both cast out into the Void.