Ko Il-woo

 was a supporting character featured in the 1967 film Yongary, Monster from the Deep. He was played by actor Yeong-il Oh.

lived in South Korea during the late 1960s. In 1967 she, as well as several others, bore witness to the chaotic rampage of a mythological beast known as Yongary. Yongary began attacking various oil refineries in Seoul, consuming large volumes of gasoline and oil.