Yeosang

Kang was born on June 15, 1999, in Pohang, South Korea. Shortly after his birth, his family moved to Gwangju, where he spent his early childhood. He later lived in Incheon, including the Songdo area. As a child, he visited the Gwangju Biennale with his cousins. He attended Incheon POSCO High School. He became a trainee at Big Hit Entertainment during his first year of high school, where he met future bandmate Jung Wooyoung. He later joined KQ Entertainment.

2018-present: Debut with Ateez

Kang debuted as a member of Ateez on October 24, 2018, with the release of the group's first extended play, Treasure EP.1: All to Zero.

2021-2024: The Show

In February 2021, Kang was announced as a new co-host of SBS MTV's music program The Show, alongside Kim Yo-han of WEi and Jihan of Weeekly. He hosted until December 2021, when he departed alongside his co-hosts. He returned for a second season beginning in January 2022, and was renewed for a third consecutive year in March 2023. In March 2024, after approximately three years as a fixed host, Kang departed The Show. He made a one-time return as a special host in June 2024, appearing alongside bandmate Wooyoung.

2023-present: Solo activities and songwriting

Kang has received writing credits for "From" (2019) and "It's You" (2023), a unit track with San and Wooyoung on the EP The World EP.Fin: Will. In 2025, he released "Legacy", a solo track he wrote for the deluxe edition of Ateez's EP Golden Hour: Part.3; it debuted at number nine on the Billboard World Digital Song Sales chart. In February 2025, he was the subject of an episode of the BS-TBS documentary series ATEEZ 8 FACE, which focused on his childhood and path to debut. In November 2025, he appeared as a solo guest on the BS-TBS food program Ramen wo Taberu. In November 2024, he performed the ceremonial opening toss before a Bucheon Hana Bank women's professional basketball game, and in May 2026, he threw the ceremonial first pitch before an LG Twins baseball game at Jamsil Baseball Stadium.

Fashion

In August 2023, Kang appeared on the cover of Cosmopolitan Korea as part of a group feature. In April 2025, he participated in his first solo magazine photoshoot and interview for Esquire Korea.

For Yeosang's work with Ateez, see Ateez discography.

Unofficial releases

Television shows

Host

All song credits are adapted from the Korea Music Copyright Association's database unless stated otherwise.