Alianna
From Warhammer 40k - Lexicanum
Alianna was an Outcast Eldar and the former lover of Keladry Ragefyre[1a]. When Dark Eldar boarded their ranger ship, Alianna was taken captive by a Dark Eldar who promised to let her live, if she shot Ragefyre. Not wanting to die Alianna shot her former lover, leaving him for dead. Afterwards, she left with the Dark Eldar and journeyed to Commorragh, to start a new life as one of them[1b]. Her treachery drove Keladry onto the warrior path, where he become a Crimson Hunter Exarch, who sought his death in every battle to escape his pain of her loss.[1a]