"Baau" is a light fairy condensed from the power of lamp light, who came to the human world to illuminate humanity's fairness and carry positive energy to the world.

Although baau always go on his own way, lazy, and gluttonous, he also have a strong sense of responsibility and empathy, always reaching out to help others if needed.

He has a gentle temperament, but because his role is to look after Baau, he has become somewhat meddlesome. Although he often advises Baau to think twice before acting, his movements are too slow—so his warnings usually come a beat too late, after Baau has already taken action, creating many humorous moments.