Also known as: Luciel, 루시엘라_R_사워크림, ルシエラ・R・サワークリーム
Elsword character. A former Demon Lord who was betrayed by one of her vassals and stripped of her power. She escaped to the human realm, but the immense mana consumption caused her to lose her memories. Ciel found her and nursed her back to health, but he was killed by high-ranking demons who were looking for her. Lu forges a contract with Ciel for him to protect her in exchange for saving his life. Her seiyuu is Iguchi Yuka.
As they are always together in battle, the names of their character classes are structured differently from the other characters. They share the Demon Power title, but afterwards one character will receive their upgrade first depending on the player's choice, followed by the other later on.
Lu's Class tree:
Demon Power (Elsword) > Chiliarch (Elsword) (accompanies Ciel's Dreadlord (Elsword)) > Catastrophe (Timoria (Elsword), accompanies Ciel's Abysser (Elsword))
Demon Power > Noblesse (Elsword) (accompanies Ciel's Royal Guard (Elsword)) > Innocent (Ishtar (Elsword), accompanies Ciel's Chevalier (Elsword))
Demon Power > Diabla (Elsword) (accompanies Ciel's Demonio (Elsword)) > Diangelion (Iblis (Elsword), accompanies Ciel's Annuller (Elsword))
Demon Power > Emptiness (Elsword) (accompanies Ciel's Turbids (Elsword)) -> Demersio (Nihilida (Elsword), accompanies Ciel's Tyrannus (Elsword))