Gayoon is the materialistic girlfriend of Beast’s Yoon Doojoon. She is absolutely head over heels in love with Doojoon and is extremely protective of him. Gayoon, although fierce with her atittude is actually quite an insecure girl inside. She doesn’t like to believe it, but she is aware that she hasn’t fully captured Doojoon’s heart just yet and makes that her mission above all missions. Because of this insecurity, she is very skeptical of any women that comes near Doojoon. Even the 4minute members, but more than that - her label mate and Doojoon’s ex girlfriend, G.NA. Gayoon has a strong hatred for G.NA after she had found out that the latter had cheated on Doojoon with his own bandmate. They choose not to acknowledge each other’s existence but the tension when they are in a room together in envitable. Gayoon would offer all she has and do anything it takes if it meant that she was the only girl in Doojoon’s eyes, forever.