|Name||YEOONE | 여원|
|Full Name||Yeo Changgu | 여창구 | 呂暢九|
|Born||March 27, 1996|
|Hometown||Jung-gu, Daejeon, South Korea|
|Height||179cm | 5′-11″|
|Family||Mother, Father, Older Sister|
|Education||Namdaejeon High School → Paekahm High School|
Daejeon Middle School
Daejeon Daehung Elementary School
|Years Active||2016 – present|
- He received an audition offer from a casting director of CUBE Entertainment at a competition when he was in high school.
- He sang Hello by Huh Gak for his CUBE audition.
- Hobby: photography
- Specialties: vocal mimicry, swimming, acting
- Motto: Live life without regrets.
- Ideal Type: someone who stays positive and has a pretty smile.
- His father is his role model.
- He likes to travel and to collect shoes and clothing.
- He hates bugs.
- Tteokbokki (spicy stir-fried rice cakes) is the best dish that he can cook.
- Jjanggu: Yeo Changgu → Jjanggu
- Beverage: coffee
- Food: samgyeopsal (pork belly), sushi, spicy food
- Sport: baseball, bowling