HaSeul (Hangul: 하슬) is the third revealed member of LOOΠΔ and a member of its first sub-unit, LOOΠΔ 1/3.

She was born as Cho Ha Seul (Hangul: 조하슬) on August 18, 1997, in Bucheon, Gyeonggi Province, South Korea.

She debuted on December 8, 2016 as a member and subsequently released her solo single album "HaSeul" on December 15, 2016.

Early LifeEdit

As a student, HaSeul studied abroad in Sydney, Australia for a month. Later, she went to Colorado, US to study for a year. When she returned to South Korea, she had to stay in school for one more year because she was placed in one grade below. HaSeul's plan after high school was to go to college and study opera; however, after participating in a singing contest, by reccomendation of her music teacher, she was casted. She then passed her audition and became a trainee at the same time as Choerry.


In October 2017, HaSeul, along with fellow LOOΠΔ members HeeJin and HyunJin, auditioned for survival reality show MIXNINE. Sadly, only HeeJin and HyunJin passed.


  • Stage Name: HaSeul (하슬)
  • Birth Name: Cho Ha Seul (조하슬)
  • Name Meaning(s): 하슬 is derived from the words "늘/Haneul/Sky" and "기/Seulgi/Wisdom", meaning "wise child from the sky."
  • Nickname(s): Cho Leader (조리더), Harvard (하버드), HaSeul PD, Cho PD
  • Birth date: August 18, 1997 (age 22)
  • Horoscope: Leo
  • Blood type: O
  • Birth place: Bucheon, Gyeonggi Province, South Korea
  • Current residence: LOOΠΔ Dormitory, Seoul, South Korea
  • Roommates: HeeJin, HyunJin, YeoJin, ViVi, Kim Lip, JinSoul, Choerry
  • Family: Parents; younger brother
  • Body statistics: 159cm (height), 43kg (weight)
  • Education: Bucheon Sangil Elementary School, Bucheon Sangil Middle School, Sangwon High School (graduated)
  • Languages: Korean (fluent) and English (waning proficiency)
  • Position: Leader
  • Instruments: Guitar, piano
  • Hobbies: Watching movies
  • Likes: Family (+dog), other members, Orbits
  • Dislikes: Pigeons, aegyo
  • Personality: Friendly, talkative, caring, motherly


Single albumsEdit


TV AppearancesEdit

Year Name Channel Role
2017 MIXNINE jTBC Herself (Contestant)

Web DramaEdit

Year Name Channel/Platform Role
2017 Do You Remember The First Time We Met? - Cho HaSeul (Main)
Do You Remember The First Time We Met? 2 -
2018 Do You Remember The First Time We Met? 3 - Cho HaSeul (Minor)

Music Video AppearancesEdit

Year Name Artist Role
2017 "Everyday I Love You (feat. HaSeul)" ViVi Rapper
"Love Cherry Motion" Choerry Minor
2018 "Heart Attack" Chuu Cameo


  • HaSeul auditioned for BlockBerryCreative with the song "Friday", by IU.
  • She is the fourth oldest in LOONA.
    • Despite being the fourth oldest, she's one of the shortest members of the group, standing at around 5'2.
  • She is the second oldest in LOONA 1/3.
  • Her zodiac sign is Leo.
  • She is represented by a white bird and the color green.
  • She is the third member to be revealed in December 2016.
  • She is a fan of baseball.
  • While she was abroad for one year, she used the English name, Jane.
  • She is bilingual, knowing English and Korean.
  • She can sing opera
  • As a student, HaSeul was often late to class.
  • She lived in the US for a year.
  • She recited the poem ‘Now, We’ by Park Joon for weekly poem 3.
  • Her name is an acronym for '늘에서 내려온 기로운 아이 (lit. the wise child who came from the sky)' (from LOONAbirth profile)
  • Her original stage name was HaJin but she did not like it.[citation needed]
  • Like HeeJin she is afraid of pigeons.


To view the gallery for HaSeul,
please click here!


  1. Idol Master - LOONA 20180928. "No specific species. Just a white bird."


v - e
HeeJinHyunJinHaSeulYeoJinViViKim LipJinSoulChoerryYvesChuuGo WonOlivia Hye
Solo singles
Mini albums
Repackage albums
Digital singles The Carol 2.0favOriTe
Exclusive releases Orbit 1.0
Concerts LOOΠΔbirth (2018) • LOOΠΔ Concert [LOOΠΔVERSE] (2019)
Other LOOΠΔ x Study Group (2018) • LOOΠΔ Cinema Theory: Up & Line (2018) • LOOΠΔ Premier Greeting: Line & Up (2018) • LOOΠΔ Studio (2018)
Dramas WoomannaDating Class
Shows Insane Quiz Show Season 2The GashinasShows Appearances : InterviewsLivestreamsRadio Shows
Others LOONA TVMiscellaneous VideosMusic VideosTeasers
v - e
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Mini albums
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