Lala-Ru possesses the power to manipulate water using a pendant containing a now nearly-depleted water reservoir, which is directly tied to her physical strength and health. She is quiet and non-violent (often failing to resist violence against her) and appears to be a child, although her age is unknown (she claims to be thousands of years old). Due to her long and disillusioned experience with humans, she feels little to no emotions with them. Her relationship with Shu changes her to be open.