Ilulu is a dragon from another world who becomes a maid in the household of Kobayashi. Initially, she has a mischievous and chaotic personality, often causing trouble for the other characters. Despite her troublesome ways, Ilulu has a soft spot for sweets and enjoys engaging in playful antics. Her character brings a unique dynamic to the series, balancing her mischievous behavior with moments of vulnerability and affection, especially towards Kobayashi and other dragon maids.