Halo (Hangul: 헤일로; shortened from Hexagon of Absolute Light and Organization) is a South Korean boy group formed by Histar Entertainment in Seoul, South Korea.[1] The group consists of six members: Dino, Inhaeng, Ooon, Jaeyong, Heecheon and Yoondong.[2] They debuted on June 26, 2014, with the single "Fever".