AtHeart · Profile

케이틀린

케이틀린 (Katelyn) is a member of South Korean girl group AtHeart, formed by Titan Content. She was publicly introduced on November 12, 2024, alongside fellow members Seohyeon and Aurora. The group released the pre-debut single "Good Girl" on May 29, 2025, before debuting with the mini album Plot Twist on August 13, 2025, with their first showcase held at Blue Square in the Yongsan District.