Kikuko Inoue actually did most of Belldandy's voice work, actually voicing about a dozen of the 48 shorts in the Mini-Goddess series, as well as Belldandy herself in both the OAV and the TV series.
I am NOT a child! Nyaah!
During the course of the series, There were actually two final frames on the intro. In the first 'half' of the series, Belldandy was alone. In the second, longer, 'half', She is joined by Urd and Skuld.