In which fictional work is XXX a character?
Éponine
Éponine Thénardier (/ˌeɪpoʊˈniːn teɪˌnɑːrdiˈeɪ/; French: (epɔnin tenaʁdje)), also referred to as the ``Jondrette girl'', is a fictional character in the 1862 novel Les Misérables by Victor Hugo.