Judy, or known as Melody Master Judy, is the master of Siva, as well as the partner of Shiro. A legendary monster user, she was considered as the greatest legend of the adventurers in the "Great Shikyou Battle," exactly 60 years ago. She, like Lavi, utilizes melody magic. She died three years prior to the main storyline.
Judy is a petite woman with short hair, who often has a sunny expression. She wears a long sleeve with a panda print in front, paired with a short skirt. She also dons on a wool cap and a scarf.