Geummi is the eldest member and is the group mom. She is known for her strength and was a hair implant specialist prior to training to become a singer. She was the first member to take on a lead role in a (web) drama production, '6 Persons Room'. Through it, she was also the first member to release a solo OST song, 'Sunlight' for the drama.
She effectively retired from the industry in 2017 upon Crayon Pop's hiatus following Soyul's departure.
On February 9th 2020, she announced that she was ten weeks pregnant and would be marrying her American fiance on February 23rd.