Firefly is a young, beautiful woman with a long gray hair and blue&pink eyes. Firefly works as a guide of tour spots of Penacony, but she secretly is a member of the Stellaron Hunters. She is kind and warm-hearted outwardly, but she is cruel and sober inwardly. She wears a white, muscular mechanic suit when she commit crimes as a Stellaron Hunter. The suit is known to public as Stellaron Hunter Sam.