Caroline is a young youkai girl and the daughter of Guwagoze. In the original rental manga, she was the daughter of Dr. Gamotsu and was either human or a vampire. She is probably best remembered for her appearance in the 1985 series film GeGeGe no Kitarou: Gekitotsu!! Ijigen Youkai no Dai-Hanran.

(Source: GeGeGe no Kitarou Wiki)