Introduction

I.O.I (아이오아이) was a project girl group formed through Mnet's survival reality show Produce 101. Originally an eleven-member girl group, they debuted on May 4, 2016, with the mini album "Chrysalis". They promoted for a year before disbanding on January 29, 2017.

In November 2015, Mnet announced their new survival show that would bring together 101 trainees from 46 entertainment companies to form a unit girl group with 11 members chosen by the viewers, which was called Produce 101. The show premiered on January 21, 2016, and the live finale was broadcast on April 1, 2016, with the 11 winners becoming a girl group.

The group's debut line included Zhou Jie Qiong and Lim Na Young from Pledis Entertainment, Kim Chung Ha from MNH Entertainment, Kim Se Jeong and Kang Mi Na from Jellyfish Entertainment, Choi Yoo Jung and Kim Do Yeon from Fantagio Music, Yoo Yeon Jung from Starship Entertainment, Kim So Hye from Redline Entertainment, Jung Chae Yeon from MBK Entertainment, and Jeon So Mi from JYP Entertainment.

Supposedly, the day of the show's finale was when I.O.I was supposed to debut with "Crush" and begin activities, but Mnet and YMC Entertainment decided to postpone their debut so they could prepare the group with their concept and a new song with new choreography. On April 5, 2016, the song was released as a digital single, followed by its music video.

They debuted on May 4, 2016, with the EP "Chrysalis" and actively promoted as a whole and as a sub-unit for less than a year. The group's concert titled Time Slip – I.O.I, which was held from January 20 to 22, 2017, marked their last group activity on stage. They officially disbanded at the end of January 2017 and returned to their respective agencies.

The group was planning to have a reunion in December 2019 with nine members under Studio Blu but due to four members being unable to participate, the reunion was virtually cancelled.

On May 4, 2021, the 5th anniversary of the group's debut, the group (except for Mina and Jieqiong) held a reunion livestream. Jieqiong managed to join the live stream via video calling.

Current state:
disbanded 
Jul 1, 2019-Oct 29, 2019
May 4, 2016-Jan 29, 2017
May 4, 2016-Jan 29, 2017
Debut:
Debut to 1st win:
104 days
Active years:
2016-2017
Country:
South Korea
Most popular member:
kpopping rank:
84th
lightstick
lightstick
9 awards
8 pics
83 videos
6 albums
72.9K viewed
101 added

Member's profiles

See pics for more Nayoung

Nayoung

Korean: 나영

Japanese: ナヨン

Birthday:
Age:
28 years old
Birthplace:
Seoul     South Korea
Height:
5'7" (171 cm)
Weight:
110.2 lbs (50 kg)
Zodiac-sign:
Blood type:
0
Position:
Leader, Main Rapper, Lead Dancer, Sub Vocalist

See pics for more Chungha

Chungha

Korean: 청하

Japanese: チョンハ

Birthday:
Age:
28 years old
Birthplace:
Ulsan     South Korea
Height:
5'4" (161 cm)
Weight:
97 lbs (44 kg)
Zodiac-sign:
Blood type:
A
MBTI:
ISFJ
Position:
Main Dancer, Lead Vocalist, Lead Rapper

See pics for more Sejeong

Sejeong

Korean: 세정

Japanese: セジョン

Birthday:
Age:
27 years old
Birthplace:
Gimje     South Korea
Height:
5'5" (164 cm)
Weight:
105.8 lbs (48 kg)
Zodiac-sign:
Blood type:
AB
Position:
Main Vocalist

See pics for more Chaeyeon

Chaeyeon

Korean: 채연

Japanese: チェヨン

Birthday:
Age:
26 years old
Birthplace:
Suncheon     South Korea
Height:
5'6" (166 cm)
Weight:
108 lbs (49 kg)
Zodiac-sign:
Blood type:
A
Position:
Sub Vocalist, Visual

See pics for more Zhou Jie Qiong

Zhou Jie Qiong

Korean: 결경

Japanese: ギョルギョン

Birthday:
Age:
25 years old
Birthplace:
Taizhou, Zhejiang, Shanghai     China
Height:
5'5" (165 cm)
Weight:
103.6 lbs (47 kg)
Zodiac-sign:
Blood type:
0
Position:
Lead Dancer, Sub Vocalist, Visual

See pics for more Sohye

Sohye

Korean: 소혜

Japanese: ソエ

Birthday:
Age:
24 years old
Birthplace:
Seoul     South Korea
Height:
5'4" (163 cm)
Weight:
105.8 lbs (48 kg)
Zodiac-sign:
Blood type:
A
Position:
Sub Vocalist, Sub Rapper

See pics for more Yeonjung

Yeonjung

Korean: 연정

Japanese: ヨンジョン

Birthday:
Age:
24 years old
Birthplace:
Gwangmyung, Gyeonggi Province     South Korea
Height:
5'6" (167 cm)
Weight:
114.6 lbs (52 kg)
Zodiac-sign:
Blood type:
A
MBTI:
ESTP
Position:
Main Vocalist

See pics for more Yoojung

Yoojung

Korean: 유정

Japanese: ユージュング

Birthday:
Age:
24 years old
Birthplace:
Guri, Gyeonggi     South Korea
Height:
5'2" (157 cm)
Weight:
97 lbs (44 kg)
Zodiac-sign:
Blood type:
0
MBTI:
ISFJ
Position:
Lead Rapper, Lead Dancer, Lead Vocalist

See pics for more Mina

Mina

Korean: 미나

Japanese: ミナ

Birthday:
Age:
24 years old
Birthplace:
Icheon     South Korea
Height:
5'5" (164 cm)
Weight:
105.8 lbs (48 kg)
Zodiac-sign:
Blood type:
0
Position:
Lead Dancer, Lead Rapper, Sub Vocalist

See pics for more Doyeon

Doyeon

Korean: 도연

Japanese: ドヨン

Birthday:
Age:
24 years old
Birthplace:
Gangwon     South Korea
Height:
5'8" (173 cm)
Weight:
110.2 lbs (50 kg)
Zodiac-sign:
Blood type:
0
MBTI:
ISTP-A
Position:
Sub Vocalist, Visual

See pics for more JEON SOMI

JEON SOMI

Korean: 전소미

Japanese: ソミ

Birthday:
Age:
23 years old
Birthplace:
Ontario     Canada
Height:
5'8" (172 cm)
Weight:
101.4 lbs (46 kg)
Zodiac-sign:
Blood type:
0
MBTI:
ENFP
Position:
Lead Dancer, Lead Vocalist, Sub Rapper, Face of the Group, Center, Maknae

Music video views

55,902,640
+7,975
1st
14,696,499
+1,381
2nd
5,174,274
+1,292
3rd
5,334,958
+725
4th
13,290,929
+244
5th

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