Kim Youjin 김유진 was born on Wednesday, February 10, 1993, which makes him the oldest member of KNK. He and group mate Seungjun were born in the Chinese Year of the Rooster. Youjin’s zodiac star sign is Aquarius. He stands 186 cm or 6'1" tall, which makes him second tallest in the group next to Seungjin. He’s the only one in the group with the blood type AB.
Youjin's favorite foods are steak, pizza, and hamburgers. His favorite drinks are Coke and barley tea. Some foods he says he doesn’t like are oysters, egg plant, and lotus.
Youjin is the main vocal for KNK and he loves listening to R&B and hip-hop music. Even though he's not in charge of rap for the group, he lists rapper August Alsina as an artist that he respects, and he even put having a performance with August on his bucket list. Youjin wants KNK to be remembered as an artist group. When he wants to have fun he sings H.O.T.'s "Please Tell Me" at karaoke. Youjin thinks it would be fun to do 5:5 bowling with fans.
He says he wants to travel to a lot of countries and explore diverse cultures, which he's more likely to do as a Kpop idol than with most other jobs. Youjin is said to have a stubborn personality, which must be tough on his three younger brothers, but they probably have a lot of fun because he likes to play games. He lists his favorite movie as Avatar and he's also a soccer fan.
The anime character he thinks he looks like is Gon from "Hunter X Hunter."
Pre-debut before joining YNB Entertainment to form KNK, he was a TS Entertainment trainee and trained with the members of boy group B.A.P. As a YNB Entertainment trainee, he appeared in the music video for Bestie's "Zzang Christmas" with band mates Jihun and Seungjun. He was also a backup dancer for the live performances of the song.
- The age gap between the oldest member, Youjin, and the maknae, Heejun, is 3 years, 2 months, and 28 days.
- Youjin and Jihun are both 186 cm or 6'1" tall.
- Youjin and Seungjun were born in the Year of the Rooster.
- He has three younger brothers.
- He has a stubborn personality.
- His nicknames are Chopsticks and Pepero.
- He has the habit of shaking his leg.
- His favorite sport is soccer.
- His shoe size is 27.5 cm.
- He wants to travel to a lot of countries and explore diverse cultures.