AMPERS&ONE is a multinational seven-member K-pop boy group formed by FNC Entertainment. KAMDEN, BRIAN, JIHO, SIYUN, KYRELL, MACKIAH and SEUNGMO come from different personal and cultural backgrounds but perform together under a name derived from the ampersand sign and the word one.

The group debuted on November 15, 2023 with the single album AMPERSAND ONE and its title track On And On. Its approachable campus-era imagery presented seven young people joining a shared mission. The March 2024 single ONE HEARTED brought Broken Heart, followed by October mini album ONE QUESTION and He + She = We.

FNC expanded the group’s recorded repertoire during 2025 with WILD & FREE, led by Kick Start, and LOUD & PROUD, led by That’s That. Its first extended North American run in early 2025 connected the music directly to international fans.

On April 8, 2026 AMPERS&ONE released its fourth mini album DEFINITION, led by GOD. The concept drew on the act defining its own identity, with Korean traditional musical colour set against modern hip-hop. KAMDEN and MACKIAH participated in writing lyrics across the six-song EP, which also contains Hit me up, What you talking about, My way, All eyes on you and Tears in your smile.

The Born To Define concerts began in Seoul in May 2026 and expanded to America, Japan, Macau and six European cities with dates in September. FNC’s official profile lists the group’s August 27, 2026 K World Dream Awards Global Next Leader recognition. The fandom name ANDEAR combines the idea of AMPERS&ONE’s ampersand with the word dear.