Loly Aivirrne is the 33rd Arrancar[1] in Sōsuke Aizen's army. She and Menoly Mallia served as Aizen's aides. oly is a young, teenage-looking female Arrancar. She has long, black hair with two pigtails which reach down her back, a slender build, and her visible right eye is pink. The remnants of her mask cover her left eye, which is shaped around her eye with teeth dotted along the bottom of the mask, and there is an extension from her mask into her hair which resembles a hair tie.

Loly's uniform includes a short, frilled skirt, white half-sleeves worn from the elbows down to the wrists, and what appears to be thigh-length black-colored, white-outlined boots. She wears white bracelets on her arms, and she also wears a white-colored, black-outlined material that ties around her neck, which reveals a fair portion of her stomach as well as her chest.[3] Loly is infatuated with and protective of Sōsuke Aizen, her leader, to the point at which she is willing to briefly speak out against an order before remembering her place. Aizen's interest in Orihime Inoue confuses her and she becomes envious of the special treatment that has been reserved for her.[4] She is vindictive and cruel to those she holds a grudge against, such as when she enters Orihime's room, with Menoly Mallia, while she is alone and in distress after Ulquiorra Cifer defeats Ichigo Kurosaki.[5] Loly is quickly angered and is brutal in her wrath. She also likes to get a rise out of her targets and becomes even more enraged when Orihime merely stares at her after being beaten severely by the Arrancar.[6] Loly is infatuated with and protective of Sōsuke Aizen, her leader, to the point at which she is willing to briefly speak out against an order before remembering her place. Aizen's interest in Orihime Inoue confuses her and she becomes envious of the special treatment that has been reserved for her.[4] She is vindictive and cruel to those she holds a grudge against, such as when she enters Orihime's room, with Menoly Mallia