Noeul (노을, born No Eul on May 10, 1989) is a rapper and vocalist in the group.[28] She studied at Sungdong Women's Business High School. Alongside Seungah, Noeul appeared in SS501's music video for "A Song Calling For You". She is a childhood friend of Girls' Generation's Kim Tae-yeon, and she was part of the recurring cameo cast of MBC's TV drama Time Slip Dr. Jin.[31] Her color in Rainbow is blue.[28]