Cho Ha-seul (조하슬), also known simply as HaSeul (하슬), is the third revealed member of LOONA, a member of its first sub-unit, LOONA 1/3, and the girl group's leader. She is a South Korean singer. Currently, she is signed with MODHAUS agency under their ARTMS project. In October 2023, she made her solo redebut.
![Poster for LOOΠΔ On Wave [LOOΠΔTHEWORLD : &]](https://image.tmdb.org/t/p/w154/ygcTQ4fgZpgbb65hqOAjLHmLyJA.jpg)
![Poster for LOOΠΔ On Wave [LOOΠΔTHEWORLD : Midnight Festival]](https://image.tmdb.org/t/p/w154/oQmkxdk0caIrIvTy6KMYvaFTlID.jpg)
