Sundrop was a faerie, native from Monarch's fairy dimension.
When the Soul Glutton and the Mistress opened all the dimensions, a portal to the fairy dimension was created by Monarch into Rupert Giles's living room. Sundrop appeared and develop an friendship with the little boy. When he is in clash with Buffy Summers, she decides to go with him into her world by a natural gateway in the Muir Woods.