Left to right: (Doyeon, Chaeyeon, Sohye, Yoojung, Sejeong, Chungha, Somi, Mina, Zhou(Official Stage Name according to YMC Entertainment’s teaser image), Yunjung, Nayoung)
I.O.I (Korean: 아이오아이, also known as IOI) is a South Korean girl group under YMC Entertainment and CJ E&M. The members consist of Somi, Sejeong, Yoojung, Chungha, Sohye, Zhou, Chaeyeon, Doyeon, Mina, Nayoung, Yunjung. They made their official debut on May 4, 2016 with their debut mini album ‘Chrysalis” and held their debut stage on Mnet’s M! Countdown on May 5, 2016.
Birth Name: Lim Na Young (임나영)
Stage Name: Nayoung
Position: Leader, Main Rapper
Position in sub-unit: Leader, Main Rapper
Nickname: Corpse Bride
Birthday: December 18, 1995
Height: 171 cm
Weight: 50 kg
Blood Type: O
Trainee Period: 4 years 7 months
Hobby(ies): Listening to Music, Manicure, Drawing
Speciality(ies): Dancing (Urban)
Education: Dongduk Girls University
Strength: Calm, Careful, Respectful
Weaknesses: Too Serious
Favorite Group: Girls’ Generation
Role Model: (Domestic: Suzy, Uee) (International: Angel Haze)
Motto: If you do it, it works out
Life Goal: Not just me, but everybody be happy
Company: Pledis
Birth Name: Kim Chung Ha (김청하)
Stage Name: Chungha
Position: Main Dancer, Lead Rapper, Sub Vocalist
Position in sub-unit: Main Dancer, Main Vocalist
Birthday: February 9, 1996
Height: 161 cm
Weight: 44 kg
Blood Type: A
Trainee Period: 3 years 3 months
Hobby(ies): Watching Movies
Speciality(ies): Dance
Company: M&H
Birth Name: Kim Se Jeong (김세정)
Stage Name: Sejeong
Position: Main Vocalist
Birthday: August 28, 1996
Height: 164 cm
Weight: 48 kg
Blood Type: AB
Trainee Period: 1 year 11 months
Hobby(ies): Painting, Re-watching movies
Speciality(ies): Ballad
Education: Indeogwon High School
Company: Jellyfish Entertainment
Current Group: gugudan / gu9udan
Birth Name: Jung Chae Yeon (정채연)
Stage Name: Chaeyeon
Position: Sub Vocalist
Date of Birth: December 1, 1997
Height: 166 cm
Weight: 49 kg
Blood Type: A
Trainee Period: 8 months
Hobby(ies): Mobile Games, Movies
Speciality(ies): Dance, Aegyo, Skating
Place of Birth: Jorye-dong, Suncheon-si, Jeollanam-do, South Korea
Education: School of Performing Arts Seoul
Company: MBK
Current Group: DIA
Birth Name: Zhou Jie Qiong (周洁琼)
Stage Name: Zhou
Introduce herself as: Kyeolkyung
Position: Lead Dancer, Sub Vocalist
Position in sub-unit: Lead Dancer, Lead Vocalist
Korean Name: 주결경
Nickname: Pinky
Birthday: December 16, 1998
Height: 166 cm
Weight: 47 kg
Blood Type: O
Trainee Period: 5 years 5 months
Hobby(ies): Window shopping, searching beauty sites
Speciality(ies): Dance, Instruments (Pipa, Guitar)
Place of Birth: Shanghai, China
Education: School of Performing Arts Seoul
Strengths: Adapts faster than others
Weaknesses: Thin Ears
Favourite Group: Girls’ Generation, f(x), After School
Role Model: Nana
Company: Pledis
Birth Name: Kim So Hye (김소혜)
Stage Name: Sohye
Position: Sub Vocalist
Position in sub-unit: Sub Vocalist
Birthday: July 19, 1999
Height: 163 cm
Weight: 48 kg
Blood Type: A
Trainee Period: 1 year
Hobby(ies): Picking up trash
Speciality(ies): Ocarina, Volleyball
Education: Kyunggi Girls’ High School
Company: Shark & Penguin Entertainment
Birth Name: Yu Yeun Jung (유연정)
Stage Name: Yunjung
Position: Main Vocalist
Birthday: August 3, 1999
Height: 167 cm
Weight: 52 kg
Blood Type: A
Trainee Period: 1 year 3 months
Hobby(ies): Playing alone
Speciality(ies): Makchum
Education: Hanlim Multi Art School
Company: Starship Entertainment
Current Group: Cosmic Girls
Birth Name: Choi Yoo Jung (최유정)
Stage Name: Yoojung
Nickname: Udon
Position: Lead Vocalist, Lead Dancer, Lead Rapper
Position in sub-unit: Lead Rapper, Lead Vocalist, Lead Dancer
Birthday: November 12, 1999
Height: 159 cm
Weight: 44 kg
Blood Type: O
Trainee Period: 4 years 7 months
Hobby(ies): Dancing, Painting, Photography
Speciality(ies): Acoustic Songs, Hip-hop
Education: Seoul Music High School
Strengths: Cheerful, Love to smile, Sociable
Weaknesses: Slow to open up to strangers
Favourite Group: 2NE1
Role Model: Rihanna
Motto: Don’t forget your roots, think of other first
Life goals: Love your life until your death
Company: Fantagio
Birth Name: Kang Mi Na (강미나)
Stage Name: Mina
Position: Lead Dancer, Sub Vocalist
Birthday: December 4, 1999
Height: 162 cm
Weight: 48 kg
Blood Type: O
Trainee Period: 1 year 1 month
Hobby(ies): Travel Alone, Watching Drama, Play Games
Speciality(ies): Waacking Dance
Education: School Of Performing Arts Seoul
Education: Sangji Girls’ High School
Company: Jellyfish Entertainment
Current Group: gugudan / gu9udan
Birth Name: Kim Do Yeon (김도연)
Stage Name: Doyeon
Position: Sub Vocalist
Position in sub-unit: Sub Vocalist
Age: December 4, 1999
Height: 172 cm
Weight: 50 kg
Blood Type: O
Trainee Period: 1 year 5 months
Hobby(ies): Watching Movies, Listening to Music
Speciality(ies): KPop Dance
Education: Wonju, Gangwondo, South Korea
Company: Fantagio
Birth Name: Ennik Somi Douma {Jeon So Mi (전소미)}
Stage Name: Somi
Position: Center, Lead Vocalist, Lead Rapper, Maknae
Position in sub-unit: Center, Lead Vocalist, Lead Rapper, Maknae
Date Of Birth: March 9, 2001
Height: 168 cm
Weight: 48 kg
Blood Type: O
Trainee Period: 2 years
Hobby(ies): Collecting Socks, Shopping, Walking Alone, Search for Good Music, Search for good restaurants
Speciality(ies): Taekwondo, Caricatures, cooking
Education: Seoyun Middle School
Company: JYP
Former Contestant of SIXTEEN