Katie

Song Yanyu,(Hangul:송 야누;born January 23,1999) better known by her stage name Katie, is the lead rapper and visual of 8-Ti.

Early life and Career
Katie was born in Shanghai, China in 199. She was very talkative as a child, and then decided to try her hand at rapping, which she was very good at.

She auditioned for OFC a few years later and was accepted. She trained for 1 year and 2 months.