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

During her time as a student, HaSeul studied abroad in Sydney, Australia for a month. Afterwards, she moved to Colorado, US and studied for another year. When she returned home to South Korea, she had to stay for one more year in school as she had been placed a grade below. HaSeul had planned to continue with her studies and go to college to study opera. This all changed after she was cast by BlockBerryCreative when she participated in a singing contest that was recommended to her by her music teacher. 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),[2] "sky" and 기 (Seulgi),[3] "wisdom", meaning together"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: 159 cm (height), 43 kg (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.

See alsoEdit

Check out the gallery of HaSeul and her character in-universe!


  1. Master - LOONA 20180928: "No specific species. Just a white bird."
  2. 하늘 - Wikitionary
  3. 슬기 - Wikitionary


v - e
HeeJinHyunJinHaSeulYeoJinViViKim LipJinSoulChoerryYvesChuuGo WonOlivia Hye
Solo singles
Mini albums
Repackage albums
Digital singles The Carol 2.0favOriTe
Exclusive releases
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 : BackstagesInterviewsLivestreamsRadio Shows
Covers DanceVocal
Others LOONA TVChoreographyFancamsLive PerformancesMiscellaneous VideosMusic VideosTeasers
Characters HeeJinHyunJinHaSeulYeoJinViViKim LipJinSoulChoerryYvesChuuGo WonOlivia Hye
Locations EarthCosmosEden
Analysis Music Videos ViViDAround YouLet Me InI'll Be ThereThe CarolKiss LaterEveryday I Love YouEveryday I Need YouEclipseSinging in the RainLove Cherry MotionnewHeart AttackOne & OnlyEgoistfavOriTefavOriTeHi HighButterfly
Cinema Theory ViVi Letter to Hong KongSee SawStarlightI Like You More Nowone
Teasers Reveal Teaser (OEC)XIXXIIXXIIIXXIVXone
Other Lore Möbius Strip TheoryThe Color TheoryCultural ReferencesdlrowehtanoolPhases of LOONAMinor theories
v - e
LOONA 1-3 Logo
Mini albums
Characters LOONA 1/3 : HeeJinHyunJinHaSeulViVi
Locations Earth
Analysis Love & LiveSonatineLove & Live 2.0
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