Mikiko Kawamoto (nicknamed Miko) was a supporting character in the original Devilman manga. Mico was a girl in her late teens with short black hair. She was only shown wearing a single outfit with a jacket, checker hat, a scarf and wide-legged pants with a flower pattern.

In Devilman: Crybaby, she is named Miki Kuroda. She is nicknamed "Miko" due to sharing her given name with Miki Makimura. She is on the same track and field team as both Akira and Miki. She was one of their childhood friends as well.

(Source: Devilman Wikia)