Jeong In Seong is a South Korean singer, dancer, musical actor and member of KNK (크나큰). He graduated from Korea Arts High School. Before debuting, he spent several years as a trainee at Big Hit Entertainment and FNC Entertainment.

After arriving at YNB Entertainment (YNB엔터테인먼트), he appeared in music videos of their label mate, BESTIE, and also performed as a backup dancer.

He made his debut in February 2016 as the group's main vocalist with a showcase and the release of their first single, "Knock".

In mid-2018, YNB faced financial problems, and the company ceased operations, leaving the members without a contract and an agency. In early 2019, they signed with 220 Entertainment (220엔터테인먼트) and had several tours in the US and in Europe. However, after the promotion of their third EP, the group went on hiatus.

He debuted as an actor with a minor role in "20th Century Boy and Girl" in 2017 and had the lead role in the musical "All Eyes On Me".

He enlisted in his mandatory military service on February 8, 2022, and was discharged on August 7, 2023.

He made his debut as a solo artist in October 2023 with the digital single "Trust Yourself".

(Source: MyDramaList) Edit Biography