Krul has the appearance of a young girl. She has red eyes, pointed ears, and long pink hair, partially done up in two pigtails by black ribbons that resemble bat wings.
She wears a short black gothic lolita style dress with detached sleeves that run past her hands. Attached to the back of her dress is a black cloak that runs from her waist down to her ankles. She also wears a white detached collar on her neck with a red ribbon through it. She wears high-heeled black boots that reach up to her thighs.
She's often seen with a one-eyed bat familiar upon her shoulder, its abilities have yet to be displayed.