Also known as: ルル=ベル
She is the Twelfth Disciple of the Clan Of Noah. Her Noah name is "Lustol" and she represents the "Lust" aspect of the Noah (D.Gray-Man). She is an antagonist/villain in the D.Gray-Man series. And has the ability to shapeshift and change any part of her body to whatever that she desires.
She also often assumes the appearance of a cat