Lelia is a former member of the League of Shadows who became the leader of the breakaway group the Sisters of the League.
Lelia was among the first of the League to arrive in Gotham after the Demons Head called them. Seeing Barbara's ferocity and determination, Lelia respected her for seeing the League would be weak if they were unable to adapt and change. She and the fellow Sisters of the League slaughtered the men and pledged loyalty to Barbara. After Ra's was brought back, Lelia still followed Barbara, for she sacrificed the Demons Head to save the life of a comrade. Lelia and the Sisters continued to follow Barbara during the events of the Cataclysm. When Barbara returned to the Sirens, she saw the corpses of women under her employment, all of whom were murdered by Nyssa al Ghul. It is unknown if Lelia was one of them.
- Master hand-to-hand combatant/Martial artist: Lelia and the rest of the female assassins in the Sisters of the League are trained by the League of Shadows in 90 different forms of combat since they were five years old.
- Expert swordswoman: Lelia is an expert swordswoman as seen when she briefly held her own against Ra's al Ghul in a sword fight; though she ultimately lost the fight.
- Expert markswoman: Lelia is an expert markswoman as seen when she took out members of the League of Shadows in the dark with quick precision. She was able to throw shurikens at at opponents without hittting Barbra Kean in front of her.
- Expert knife-wielder/thrower: Lelia is an expert knife thrower as she threw a knife near Barabra's head without hitting her. She also used a knife during her test with Barbara and her fight against Ra's al Ghul.
- Katana: Lelia used a katana to finish off a gang member and in her fight against Ra's al Ghul.
- IMI Uzi Pistol: Lelia used a light sub-machine gun to kill members of the League of Shadows.
- Shurikens: Lelia used shurikens to kill rival gang members.
- Throwing knives: Lelia used throwing knives during her test for Barbara and used them in her fight against Ra's al Ghul as close quarters weapons.
- "A Dark Knight: One of My Three Soups"
- "A Dark Knight: That's Entertainment"
- "A Dark Knight: To Our Deaths and Beyond"
- "A Dark Knight: One Bad Day"
- "A Dark Knight: No Man's Land"