Uku (우쿠) is a female contestant in Korean Fried Chicken. She is currently competing as a member of Team Dancing Fire Kind Plutonium. She is a pitch black jack with magenta spiral eyes and a mouth of the same color. She also has sharp teeth. Uku is contained inside of Aru. Uku is somewhat aggressive when she is freed but appears to be wanting to join the fun. Uku also seems to be very gluttonous as she eats the cake of Zipper Block instead of attacking Team Evil. She might also be insincere in her duties, proven by above statement.