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.


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 21)
  • 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: 160cm (height), 45kg (weight)
  • Education: Bucheon Sangil Elementary School, Bucheon Sangil Middle School, Sangwon High School (graduated)
  • Languages: Korean (fluent) and English (fluent)
  • Position: Leader
  • Instruments: Guitar, piano
  • Hobbies: Watching movies
  • Likes: Family (+dog), other members, Orbits
  • Dislikes: Pigeons, aegyo
  • Personality: Friendly, talkative, caring


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.
  • 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 on 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
  • 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]


To view the gallery for HaSeul,
please click here!


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