Ariadne
Little, if anything, is known about Ariadne, the most mysterious member of the group, in part because of her quiet demeanor and reluctance to talk about her past.  She was born in Deleo, but her family, running from persecution, settled in Terabithia.  Sometime around her tenth birthday, the army of darkness conquered Terabithia and Ariadne's family was destroyed; some of them being sold into slavery, others being slaughtered.  Ariadne escaped to Hyrule where she was taken in by Lysia and made part of the Guardians.  Her two fields of specialty are translating texts and detecting/finding people.