a being created by God and who, for some reason, disobeyed Him and for punishment, was hurled from heaven to dwell within what we know as hell
A fallen angel is an angel that has been banished from Heaven.
Fallen Angel is a fictional comic book heroine created and owned by Peter David. It was published by DC Comics from July 2003 until it was cancelled with issue #20 in May 2005 because of low sales. It resumed publication through IDW Publishing in December 2005 http://www.comics.org/series.lasso?SeriesID=11983.