Oh Gayoung 오가영 is Unicorn's main vocal.
Gayoung was born on Friday, October 14, 1994, in the Chinese Year of the Dog. She's a Libra. She's 165 cm or 5'5" tall and her blood type is AB.
She attended Han Woonyoung High School.
She's humorous but is curious about a lot of things. She has a younger brother. Her hobbies are gaming, watching mukbangs, watching movies, and coloring. She likes ski boarding. Her favorite foods are tteokbokki, pizza, bread, and Japanese food.