IOI members profile: names, positions, ages, ranking, who left

IOI members profile: names, positions, ages, ranking, who left

The IOI members are the dream girls of the Produce 101 survival program. Their unique name and great vocals have made them a force to reckon with.

IOI members profile
Image:, @ioi_official_ig
Source: Instagram

The name IOI means “Ideal of Idol.” Founded in 2016, the group is a South Korean girl group made up of singers. It emerged from the Mnet Produce 101 show and initially consisted of 11 members. These IOI members were selected from some of the contestants in the show.

Who are IOI members?

They are a talented group of girls that ranked between positions 1 to 11 in the popular Produce 101 survival show. The IOI members' name includes Sejeong, Mina, Chung Ha, Yoojung, Doyeon, Chaeyeon, Nayoung, Yeonjung, Kyulkyung also known as IOI members' Pinky, Somi, and Sohye.

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IOI members profile

We have complied a summary of the IOI members positions, IOI members Instagram,ages and IOI members' height below:

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IOI members profile
Image:, @chungha_official
Source: Instagram
  • Name: Kim Chung Ha
  • Stage name: Chungha
  • Birth-date: 9th Feb 1996
  • Age: 24 years
  • Height: 161 cm
  • Position: Main dancer, lead vocalist, rapper
  • Instagram: @chungha_official

Facts about Chungha

  • Her nickname is Alcohol (SNL Korea 7 – May 7, 2016)
  • She went to Sejong University.
  • She loves watching movies alone.
  • She can speak Korean and English.
  • She lived in Dallas, Texas for almost 8 years.


IOI members names
Image:, @ioi_official_ig
Source: Instagram
  • Name: Kim Sejeong
  • Stage name: Sejeong
  • Birth-date: 28th August 1996
  • Age: 23 years
  • Height: 164 cm
  • Position: Main vocalist

Facts about Sejeong

  • She was born in Jeonju, South Korea.
  • She went to Indeogwon High School.
  • Sejeong loves painting and re-watching movies.
  • She is the lead actress in the drama "School 17."
  • She is not good at memorizing things.


IOI members profile
Image:, @ioi_official_ig
Source: Instagram
  • Name: Kang Mina
  • Stage name: Mina
  • Birth-date: 4th Dec 1999
  • Age: 20 years
  • Height: 164 cm
  • Position: Main rapper, vocalist

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Facts about Mina

  • Her nickname is Juice Girl.
  • She went to Seoul School of Performing Arts.
  • She shares a birthday with Doyeon.
  • She loves traveling alone and watching dramas.
  • She is an only child.


IOI members height
Image:, @dbeoddl
Source: Instagram
  • Name: Choi Yoo-Jung
  • Stage name: Yoojung
  • Birth-date: 12th Nov 1999
  • Age: 20 years
  • Height: 159 cm
  • Position: Main rapper, lead vocalist, main dancer, center
  • Instagram: @dbeoddl__

Facts about Yoojung

  • She went to Seoul Music High School.
  • She is an only child.
  • Yoojung loves painting and photography.
  • She raps and writes her own lyrics.
  • Her role model is Rihanna.


What happened to IOI members
Image:, @lafilledhiver
Source: Instagram
  • Name: Kim Do-Yeon
  • Stage name: Doyeon
  • Birth-date: 4th Dec 1999
  • Age: 20 years
  • Height: 173 cm
  • Position: Visual, lead dancer, vocal
  • Instagram: @lafilledhiver_

Facts about Doyeon

  • She is from Wonju, Gangwondo, South Korea.
  • She went to Sangji Girls High School.
  • She has an older sister and brother.
  • She loves watching movies and listening to music.
  • She was in the web drama "Idol fever" with Yoojung.

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IOI members whatta man
Image:, @j_chaeyeoni
Source: Instagram
  • Name: Jung Chae-Yeon
  • Stage name: Chaeyeon
  • Birth-date: 1st Dec 1997
  • Age: 22 years
  • Height: 166 cm
  • Position: Vocalist, rapper, face of the group
  • Instagram: @j_chaeyeoni

Facts about Chaeyeon

  • She was born in Jeollanam-do, South Korea.
  • She went to Seoul School of Performing Arts.
  • She has an older sister named Jung.
  • She loves mobile games and movies.
  • Her nicknames are Cutie and Ending Fairy.


IOI members after disband
Image:, @ioi_official_ig
Source: Instagram
  • Name: Yoo Yeonjung
  • Stage name: Yeonjung
  • Birth-date: 3rd Aug 1999
  • Age: 20
  • Height: 167 cm
  • Position: Main vocalist, maknae
  • Instagram: @uyj_s

Facts about Yeonjung

  • She was born in Gwangmyung, South Korea.
  • She graduated from Hanlim Multi Art School.
  • She has a younger brother.
  • Yeonjung can play the guitar.
  • She enjoys playing alone.


IOI members new group
Image:, @ioi_official_ig
Source: Instagram
  • Name: Lim Na-young
  • Stage name: Nayoung
  • Birth-date: 18th Dec 1995
  • Age: 24 years
  • Height: 171 cm
  • Position: Leader, main dancer, lead rapper, vocalist
  • Instagram: @nayoung_lim95

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Facts about Nayoung

  • She was born in Seoul but later moved to Asan.
  • She attended Dongduk Women's University.
  • She has an older brother.
  • Her parents own a restaurant.
  • She loves listening to music and drawing.


IOI members pinky
Source: Instagram
  • Name: Zhou Jieqiong
  • Stage name: Kyulkyung
  • Birth-date: 16th Dec 1998
  • Age: 21 years
  • Height: 166 cm
  • Position: Vocal
  • Instagram: @zhou_jieqiong1216

Facts about Kyulkyung

  • She attended Shanghai Conservatory of Music; Seoul School of Performing Arts.
  • She has a younger brother and sister.
  • She can speak Chinese and Korean.
  • She plays the piano.
  • Her mother runs a boutique in Shanghai.


IOI members leaving
Image:, @s_sohye
Source: Instagram
  • Name: Kim So-hye
  • Stage name: Sohye
  • Birth-date: 19th July 1999
  • Age: 20 years
  • Height: 163 cm
  • Position: Singer
  • Instagram: @s_sohye

Facts about Sohye

  • She attended Kyunggi Girls' High School.
  • She has a younger brother.
  • Her hobbies are penguin collection and picking up trash as she walks.
  • She plays volleyball.
  • She owns a cafe in Korea.

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IOI members official instagram
Image:, @ioi_official_ig
Source: Instagram
  • Name: Jeon So-mi
  • Stage name: Somi
  • Birth-date: 9th Mar 2001
  • Age: 18years
  • Height: 171 cm
  • Position: Vocal, maknae
  • Instagram: @somsomi0309

Facts about Somi

  • She attended Hanlim Multi Arts High School.
  • She has a younger sister.
  • According to the IOI members' age, Somi is the youngest.
  • Her specialty is cooking.
  • She holds a 3rd degree black belt in Taekwondo.

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IOI members ranking

The IOI ladies were chosen according to their positions. They were picked from a pool of 101 contestants in the Produce 101 show. The ranking was as follows:

  • Somi– 1
  • Sejeong- 2
  • Yoojung- 3
  • Chungha- 4
  • Sohye- 5
  • Kyulkyung- 6
  • Chaeyeon– 7
  • Doyeon– 8
  • Mina– 9
  • Nayoung- 10
  • Yeonjung– 11


They produced their first extended play in May 2016 called "Chrysalis". In August 2016, the group's sub-unit released a single titled Whatta Man. The Whatta Man IOI members who formed the sub-unit included Namyoung, Chungha, Sohye, Yoojung, Doyeon, Somi, and Kyulkyung. The IOI members' Whatta Man song was an inspiration from the song “What a Man” by Linda Lyndell.

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After this, they released an extended play called “Miss Me” in October 2016. The singles in the extended plays are as follows:

  • Chrysalis
  1. I.O.I (Intro)
  2. Dream Girls
  3. Knock Knock Knock
  4. Doo-Wap
  5. Crush
  6. When the Cherry Blossoms Fade
  7. Pick Me
  • Miss Me
  1. Very Very Very
  2. Hold On
  3. More More
  4. Ping Pong
  5. M-Maybe

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What happened to IOI members?

On 5th Nov 2016, YMC entertainment confirmed that they would be disbanding the group. They held their final concert from 20th to 22nd January 2017 in Jangchung Gymnasium. The IOI members after disband went into solo careers while some joined other music groups.

IOI members Somi formed a fan interaction site. Chungha became a solo artist, while Sohye went into acting. For the other members we have complied a list of IOI members new group.

  • Nayoung and Kyulkyung became Pristin IOI members.
  • Sejeong debuted with Gugudan.
  • Mina debuted in Gugudan's subunit.
  • Chaeyeon appeared in the girl group DIA.
  • Yeonjung joined the group, Cosmic Girls.
  • Doyeon and Yoojung debuted in Weki Meki.

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IOI members new group
Image:, @ioi_official_ig
Source: Instagram

Where are IOI members now?

On 1st July 2019, Studio Blu announced the reunion of the group. However, some IOI members left and were not going be part of the reunion arrangement. They included Yoo Yeon-jung and Jeon So-mi. The announcement of the two IOI members leaving was received with mixed reaction because they were a favorite of many.

In September, Blu Studio, who were to produce IOI members, said the reunion would happen again in December 2019. However, the reunion was canceled officially on 29th October 2019. The production cited conflicts between the IOI members and the Mnet vote manipulation investigation.

Are wondering what happened to the IOI members after the failed reunion? Nayoung joined Sublime Artist Agency in August 2019. Sohye is an actress while the rest have continued with their music careers.

Social media accounts

Here are the group's online sites including the IOI members official Instagram.

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The girls came into the limelight with such a promising future. The IOI members made their year full of activity with some brilliant songs. It is fulfilling to know that even if they are not together, they are doing well in their different ventures.


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