
Yes, I Love It! Meet I.O.I, The First National Pick from Produce 101
Even though its members currently have to go on their own paths as solo artists or members of other groups, I.O.I will always remain a legendary girl group in South Korea due to their massive achievements in a relatively short time. Consisting of 11 members from various talent agencies in South Korea, I.O.I’s spectacular fame was proven through the constant selling out of products that they endorsed and always being a part of trending topics on various search engines as soon as they appeared at events and on television programs.
In this article, Channel-Korea will provide information about all I.O.I members including their personal profiles, facts, discography, filmography, appearance on Produce 101, debut journey and disbandment, and the latest news of each member. So, keep reading!
I.O.I’s Nayoung’s Full Profile

Stage Name: Nayoung
Birth Name: Im Na Young
Nickname: Stone-faced Nayoung
Birth: Seoul, South Korea, December 18, 1995
Age: 25 (Korean age) / 24 (International age)
Position: Leader, Main Rapper, Lead Dancer, Vocalist
Final Rank on Produce 101: 10 (138,726 votes)
Training Period: 4 years and 7 months
Zodiac Sign: Sagittarius
Chinese Astrology: Pig
Nationality: South Korean
Blood Type: O
Height: 171 cm
Weight: 50 kg
Siblings: 1 (an older brother)
Education: Dongduk Girls University
Talent Agency: Pledis Entertainment
Current Occupation: Member of girl group Pristin
Fun Facts You Have to Know About I.O.I’s Nayoung
- Nayoung’s hobbies are listening to music, manicures, and drawing, whereas her specialty is dancing.
- Her favorite group is Girls’ Generation whereas her role models are Suzy, Uee, and Angel Haze.
- Her life goal is everyone, including herself, being happy.
- Along with Chungha, Nayoung appeared on the television series Entourage.
- She appeared in Troy’s music video “Why Are We?”
I.O.I’s Chungha’s Full Profile

Stage Name: Chungha
Birth Name: Kim Chan Mi
Nickname: Alcohol, President of Dances
Birth: Seoul, South Korea, February 9, 1996
Age: 24 (Korean age) / 23 (International age)
Position: Main Dancer, Lead Vocalist, Rapper
Final Rank on Produce 101: 4 (403,633 votes)
Training Period: 3 years and 3 months
Zodiac Sign: Aquarius
Chinese Astrology: Rat
Nationality: South Korean
Blood Type: A
Height: 161 cm
Weight: 44 kg
Education: Sejong University
Talent Agency: M&H Entertainment
Current Occupation: Solo singer
Instagram: @chungha_official
Fun Facts You Have to Know About I.O.I’s Chungha
- Chungha is able to speak Korean and English because she used to live in Dallas, Texas, for 7-8 years before returning to Korea to become a singer.
- She is a former JYP trainee. She also auditioned for YG Entertainment but failed.
- Her hobby is watching movies alone, whereas her specialty is making choreography and dancing.
- She earned her nickname ‘Alcohol’ because her name is also the name of an alcohol brand.
- Along with Nayoung, Chungha appeared on the television series Entourage.
- I.O.I members think that Chungha has the worst energy in the group because her energy drains fastest.
- She likes dried sweet potatoes. She shared this snack with other I.O.I members.
- According to Somi, Chungha would close her eyes and start to sleep every time she lied down during photoshoots.
- Along with Doyeon, Chungha is one of the brave members as seen on the I.O.I show when they would go to abandoned or haunted places.
- She created the choreography for “Whatta Man.”
- She said on Hit the Stage that she almost quit dancing due to financial issues. However, she asked her family to allow her to continue as she was confident in it.
I.O.I’s Sejeong’s Full Profile

Stage Name: Sejeong
Birth Name: Kim Se Jeong
Nickname: God Sejeong, Uncle
Birth: Jeonju, South Korea, August 28, 1996
Age: 24 (Korean age) / 23 (International age)
Position: Main Vocalist
Final Rank on Produce 101: 2 (525,352 votes)
Training Period: 1 year 11 months
Zodiac Sign: Virgo
Chinese Astrology: Rat
Nationality: South Korean
Blood Type: AB
Height: 164 cm
Weight: 48 kg
Siblings: 1 (an older brother)
Education: Indeogwon High School
Talent Agency: Jellyfish Entertainment
Current Occupation: Member of girl group Gugudan
Fun Facts You Have to Know About I.O.I’s Sejeong
- Sejeong’s hobbies are painting and re-watching movies, whereas her specialty is singing ballads.
- She participated in SBS’s Kpop Star when she was 16 years old.
- She gained a lot of popularity on variety shows for her brilliant personality and friendliness. She had variety show appearances in TV programs like The Law of the Jungle, Boat Horn Clenched, Baek the Homemade Food Master 2, and Busted.
- Similar to Yeonjung, Sejeong often lends her voice to the soundtracks of Korean dramas.
- She is the fastest soloist to win in a music show with her song “Flower Road” which is composed by Zico.
- She named the camera in her room with Mina and Sohye ‘Boolyang’ (screen time) so that it records more screen time for their pre-debut show Standby I.O.I.
I.O.I’s Chaeyeon’s Full Profile

Stage Name: Chaeyeon
Birth Name: Jung Chae Yeon
Nickname: Ending Fairy, Daeng
Birth: Jorye-dong, Suncheon, Jeollanam Province, South Korea, December 1, 1997
Age: 23 (Korean age) / 22 (International age)
Position: Vocalist, Visual
Final Rank on Produce 101: 7 (215,338 votes)
Training Period: 8 months
Zodiac Sign: Sagittarius
Chinese Astrology: Ox
Nationality: South Korean
Blood Type: A
Height: 166 cm
Weight: 49 kg
Siblings: 1 (an older sister)
Education: School of Performing Arts Seoul
Talent Agency: MBK Entertainment
Current Occupation: Member of girl group DIA
Instagram: @j_chaeyeoni
Fun Facts You Have to Know About I.O.I’s Chaeyeon
- Prior to her debut with I.O.I and participation in Produce 101, Chaeyeon had already debuted as a member of girl group DIA.
- She received her nickname ‘Daeng’ because she is often clueless.
- Her hobbies are playing mobile games and watching movies, whereas her specialties are dancing, doing adorable acts (aegyo), and skating.
- I.O.I members revealed that Chaeyeon drinks a strawberry latte every day.
- Along with Yoojung, she named the camera on their room Son Merio.
- Chaeyeon and Yeonjung said that I.O.I members spent more time in the car than the dorm.
- Besides being a DIA member, she also appeared on dramas such as Drinking Solo, Reunited Worlds, and 109 Strange Things.
I.O.I’s Kyulkyung’s Full Profile

Stage Name: Kyulkyung
Birth Name: Zhou Jie Qiong
Korean Name: Joo Kyul Kyung
Nickname: Joo Jae Duk, Pinky
Birth: Shanghai, China, December 16, 1998
Age: 22 (Korean age) / 21 (International age)
Position: Lead Dancer, Vocalist, Visual
Final Rank on Produce 101: 6 (218,338 votes)
Training Period: 5 years and 5 months
Zodiac Sign: Sagittarius
Chinese Astrology: Tiger
Nationality: Chinese
Blood Type: O
Height: 166 cm
Weight: 47 kg
Siblings: 2 (one little sister and one little brother)
Education: Shanghai Conservatory of Music, School of Performing Arts Seoul
Talent Agency: Pledis Entertainment
Current Occupation: Member of girl group Pristin
Fun Facts You Have to Know About I.O.I’s Kyulkyung
- Kyulkyung is the only foreign member in I.O.I.
- Her hobbies are window shopping and searching beauty sites, whereas her specialties are dancing and playing musical instruments such as the pipa and the guitar.
- Her favorite groups are Girls’ Generation, f(x), and After School, whereas her role model is After School’s Nana.
- Similar to Yoojung, Somi, and Sohye, Kyulkyung is easily scared when having to go to abandoned or haunted places.
- She dislikes Chungha’s grey socks because she thinks the color lowers self-confidence. She wanted to buy Chungha new socks, but she refused the offer because she does not like colorful socks.
- In the first episode of Standby I.O.I, Kyulkyung and Yeonjung consumed cereal by drinking and eating it with their hands because there was no spoon.
- I.O.I members said that Kyulkyung looks like an ostrich
I.O.I’s Sohye’s Full Profile

Stage Name: Sohye
Birth Name: Kim So Hye
Nickname: Penguin
Birth: Seoul, South Korea, July 19, 1999
Age: 21 (Korean age) / 20 (International age)
Position: Vocalist, Rapper
Final Rank on Produce 101: 5 (229,732 votes)
Training Period: 1 year
Zodiac Sign: Cancer
Chinese Astrology: Rabbit
Nationality: South Korean
Blood Type: A
Height: 163 cm
Weight: 48 kg
Siblings: 1 (a younger brother)
Education: Kyunggi Girls’ High School
Instagram: @s_sohye
Talent Agency: Shark & Penguin Entertainment
Current Occupation: Actress and Cafe Owner
Fun Facts You Have to Know About I.O.I’s Sohye
- Sohye was a volleyball player in junior high school. She won the National Junior High Title as a libero.
- Her hobbies are picking up trash while walking and collecting penguin stuff, whereas her specialties are beatboxing, acting, playing volleyball, and playing the ocarina.
- Similar to Kyulkyung, Somi, and Yoojung, Sohye is easily scared when having to go to abandoned or haunted places.
- According to I.O.I members, Sohye eats the most in the group.
- She picked actress Chun Woo-hee as her role model.
- She has her own cafe named Penguin Cafe which is located in Seocho District, South Korea.
- Sohye appeared on several dramas including Poetic Story, Queen of Ring, Unexpected Heroes, and Kang Deoksun’s Love History and in music videos including The Ark’s “The Light,” Ra.D’s “Look into Your Eyes,” and Jinlin Wang’s “Goodbye.”
I.O.I’s Yeonjung’s Full Profile

Stage Name: Yeonjung
Birth Name: Yoo Yeon Jung
Nickname: Cider Vocal
Birth: Gwangmyung, Gyeonggi Province, South Korea, August 3, 1999
Age: 21 (Korean age) / 20 (International age)
Position: Main Vocalist
Final Rank on Produce 101: 11 (136,780 votes)
Training Period: 1 year and 3 months
Nationality: South Korean
Zodiac Sign: Leo
Chinese Astrology: Rabbit
Blood Type: A
Height: 167 cm
Weight: 52 kg
Siblings: 1 (an older brother)
Education: Hanlim Multi Art School, Dankook University with a major in musical theater
Talent Agency: Starship Entertainment
Current Occupation: Member of girl group WJSN / Cosmic Girls
Instagram: @uyj_s
Fun Facts You Have to Know About I.O.I’s Yeonjung
- Yeonjung is a former trainee of SM Entertainment.
- Her hobby is playing alone.
- In the first episode of Standby I.O.I, Yeonjung and Kyulkyung consumed cereal by drinking and eating it with their hands because there was no spoon.
- Similar to Sejeong, Yeonjung often lends her voice to the soundtracks of Korean dramas.
- Yeonjung and Chaeyeon said that I.O.I members spent more time in the car than the dorm.
- Many people think that she looks like female entertainer Ra Mi-ran.
I.O.I’s Yoojung’s Full Profile

Stage Name: Yoojung
Birth Name: Choi Yoo Jung
Nickname: Wink Fairy
Birth: Guri, Gyeonggi Province, November 12, 1999
Age: 21 (Korean age) / 20 (International age)
Position: Lead Rapper, Lead Dancer, Lead Vocalist
Final Rank on Produce 101: 3 (438,778 votes)
Training Period: 4 years and 7 months
Zodiac Sign: Scorpio
Chinese Astrology: Rabbit
Nationality: South Korean
Blood Type: O
Height: 157 cm
Weight: 44 kg
Siblings: None
Education: Seoul Music High School, School of Performing Arts Seoul
Talent Agency: Fantagio Entertainment
Current Occupation: Member of girl group Weki Meki
Fun Facts You Have to Know About I.O.I’s Yoojung
- Yoojung is the shortest I.O.I member.
- Her hobbies are dancing, painting, and photography, whereas her specialties are rapping, writing her own lyrics, covering boy group choreography, and doing impersonations of elderly people and orangutans.
- Her favorite group is 2NE1, whereas her role model is the American singer Rihanna.
- Similar to Kyulkyung, Somi, and Sohye, Yoojung is easily scared when having to go to abandoned or haunted places.
- Along with Chaeyeon, Yoojung named the camera on their room Son Merio.
- She appeared in ASTRO’s music video “Breathless” and the drama To Be Continued.
- Along with Doyeon, Yoojung starred in the web drama Idol Fever.
- She once said that she would date Chungha if she was a guy.
- Along with Somi, Yoojung was bullied for a short period during her school days.
- Her ideal type is actor Park Haejin, especially his role as the musician in the drama Cheese in the Trap.
I.O.I’s Mina’s Full Profile

Stage Name: Mina
Birth Name: Kang Mi Na
Nickname: Fruit Juice Girl
Birth: Icheon, Gyeonggi, Province, South Korea, December 4, 1999
Age: 21 (Korean age) / 20 (International age)
Position: Lead Dancer, Vocalist, Rapper
Final Rank on Produce 101: 9 (173,762 votes)
Training Period: 1 year and 1 month
Zodiac Sign: Sagittarius
Chinese Astrology: Rabbit
Nationality: South Korean
Blood Type: O
Height: 162 cm
Weight: 48 kg
Education: Seoul School of Performing Arts
Talent Agency: Jellyfish Entertainment
Current Occupation: Member of girl group Gugudan
Fun Facts You Have to Know About I.O.I’s Mina
- Mina’s hobbies are watching dramas, traveling alone, and playing games, whereas her specialty is waacking dance.
- Mina shares her birthday with Doyeon.
- Prior to I.O.I’s debut, Mina proposed the idea to do the coffee truck tribute for fans in the Yongsan and Sangam districts.
- Besides being a member of Gugudan, she also became the host of MBC’s Music Core and landed supporting roles in dramas.
I.O.I’s Doyeon’s Full Profile

Stage Name: Doyeon
Birth Name: Kim Do Yeon
Nickname: Little Jun Ji-hyun
Birth: Wonju, Gangwondo, South Korea, December 4, 1999
Age: 21 (Korean age) / 20 (International age)
Position: Sub Vocalist
Final Rank on Produce 101: 8 (200,069 votes)
Training Period: 1 year and 5 months
Zodiac Sign: Sagittarius
Chinese Astrology: Rabbit
Nationality: South Korean
Blood Type: O
Height: 173 cm
Weight: 50 kg
Education: Guri Girls’ High School, School of Performing Arts Seoul
Siblings: 2 (an older brother and an older sister)
Talent Agency: Fantagio Entertainment
Current Occupation: Member of girl group Weki Meki
Fun Facts You Have to Know About I.O.I’s Doyeon
- Doyeon’s hobbies are watching movies and listening to music, whereas her specialties are dancing and giving reactions to everything (usually in variety shows).
- Along with Yoojung, Doyeon starred in the web drama Idol Fever.
- Along with Chungha, Doyeon is one of the brave members as seen on I.O.I’s show when they went to many abandoned or haunted places.
- She shares her birthday with Mina.
- Her ideal type is Park Seo-joon, especially his role in the drama She Was Pretty.
I.O.I’s Somi’s Full Profile

Stage Name: Somi
Birth Name: Ennik Somi Douma
Korean Name: Jeon So Mi
Nickname: Vitamin, the Provocative Maknae
Birth: Ontario, Canada, March 9, 2001
Age: 19 (Korean age) / 18 (International age)
Position: Lead Dancer, Lead Vocalist, Rapper, Face of the Group, Center, Maknae (the youngest member of the group)
Final Rank on Produce 101: 1 (858,333 votes)
Training Period: 2 years
Zodiac Sign: Pisces
Chinese Astrology: Snake
Nationality: Dutch-Korean-Canadian
Blood Type: O
Height: 169 cm
Weight: 48 kg
Siblings: 1 (a younger sister named Evelyn)
Education: Seoyun Middle School, Hanlim Multi Art High School
Talent Agency: The Black Label
Current Occupation: Solo artist
Instagram: @somsomi0309
Fun Facts You Have to Know About I.O.I’s Somi
- Prior to her participation in Produce 101, Somi was a contestant on SIXTEEN. She was meant to be a part of Twice but failed due to her young age.
- Her hobbies are collecting socks, shopping, walking alone, and searching for good music and restaurants, whereas her specialties are taekwondo, drawing caricatures, cooking, and impersonating an eating giraffe.
- Similar to Kyulkyung, Sohye, and Yoojung, Somi is easily scared when having to go to abandoned or haunted places.
- According to I.O.I members, Somi cannot do aegyo because she is too easy going.
- Along with Yoojung, Somi was bullied for a short period during her school days.
- She appeared in the music videos for GOT7’s “Stop Stop It” and Up10tion’s “White Night.”
- She is a huge fan of 2NE1. Her role model is Minzy.
- She is close friends with Wanna One’s Daehwi and GFRIEND’s Umji.
- In mid-2018, Somi decided to leave JYP Entertainment. She then joined The Black Label, the subsidiary label of YG Entertainment.