Who Are AMPERS&ONE?

AMPERS&ONE is a seven-member K-pop boy group from FNC Entertainment, the agency behind FTISLAND, CNBLUE, SF9 and P1Harmony. The members are Kamden, Brian, Jiho, Siyun, Kyrell, Mackiah and Seungmo. They debuted on November 15, 2023, with the single album AMPERSAND ONE and its lead song "On And On."

The name joins the ampersand, the & sign for "and," with the word "one." The agency's explanation is that you, me and all of us are one: seven people coming together one by one to reach a shared dream. Say it the way it's spelled, "ampersand one."

The last year and a half has been their busiest stretch. "That's That" led the third mini album LOUD & PROUD in August 2025, and "GOD" led the fourth, DEFINITION, in April 2026, setting a gayageum melody against a trap beat in what the members called Joseon hip-hop. In May 2026 they opened the Born To Define tour in Seoul, then took it through the United States, including Washington, D.C., New York, Boston, Chicago and Los Angeles, on to Tokyo, Osaka and Macau, and into Europe for the first time in September. It ended in London after 27 cities in about four months.

Meet the Seven Members

Here are the seven in the order the agency lists them. FNC hasn't published birth dates in a member profile we could find, so this guide doesn't list ages. Coverage of the group consistently describes Kamden as the eldest and Seungmo as the youngest.

Kamden

The leader and the eldest. Kamden took over as leader from Jiho with the first mini album in October 2024; Jiho explained that, as the oldest, Kamden was already the one the members talked decisions through with. He grew up in Seattle and appeared on the 2023 survival show Boys Planet. He raps and writes: he co-wrote the lyrics of the debut song and worked on the raps for nine of PATHFINDER's ten tracks, title song included. Since April 2026 he has co-hosted the EBS radio show Idol Korean with Mackiah.

Brian

Brian is from Vancouver, Canada, and also appeared on Boys Planet in 2023. PATHFINDER gives him his first songwriting credit, on "Fairytales," which he shares with Jiho. He has talked about how many of his friends back in Canada started listening to K-pop after he debuted.

Jiho

Jiho is Korean, a Boys Planet alumnus and the group's first leader, a role he passed to Kamden in 2024. At the debut showcase he set the goal of a rookie award, the one prize a group can only win once. "Fairytales" on PATHFINDER is his first credit as a writer.

Siyun

Siyun is Korean. At the debut showcase he named the group's strength as the feeling of a comfortable friend, and said that members who grew up in different cultures give the group more colors to show. On the official channel you'll find his solo cover of LAUV's "Feelings" and a duet cover with Seungmo.

Kyrell

Kyrell is from Seattle, like Kamden. Before the DEFINITION comeback in April 2026, he promised fans energy and tight, synchronized choreography, which is a fair summary of what he brings on stage.

Mackiah

Mackiah grew up in Sydney, Australia. Fluent in English and Korean, he is the group's go-to interpreter, though he points out that everyone speaks some of both. He has said he would love to perform in his hometown one day. Like Kamden, he worked on the raps for nine PATHFINDER tracks, and the two share the Idol Korean radio show.

Seungmo

The youngest, and Korean. Seungmo arranged PATHFINDER's closing track, "AURORA," himself, a song all seven members wrote together. He also sings on the duet cover with Siyun on the official channel.

Where Are the AMPERS&ONE Members From?

Four of the seven grew up outside Korea. Kamden and Kyrell are from the United States, Brian is from Canada and Mackiah is from Australia. Jiho, Siyun and Seungmo are Korean. At a 2025 showcase Mackiah named their hometowns: Vancouver for Brian, Seattle for Kyrell and Kamden, and Sydney for himself.

The mix shows up in the music. For "GOD," a song built on Korean instruments, Mackiah said the members from abroad worried the sound might feel unfamiliar to them, so they practiced Korean traditional dance and watched Korean films and historical dramas to get it into their bodies. It also explains the touring map. With several members who can talk to a crowd in English, a tour across North America and Europe comes more naturally.

PATHFINDER: When Does the First Full Album Come Out?

PATHFINDER, AMPERS&ONE's first full album, comes out on November 17 at 6 p.m. KST, which is 9 a.m. in London, 4 a.m. in New York and 5 p.m. in Beijing, Taipei, Hong Kong and Singapore. It arrives three years after their debut, with ten tracks led by "King's Way":

• "King's Way" (title track)
• "Splish Splash"
• "Full of You"
• "Cautious"
• "Fairytales"
• "Sorry Not Sorry"
• "Big Shot"
• "NOM!"
• "It's Been a Year"
• "AURORA"

The idea, as the agency describes it, is a road to the throne that doesn't run straight up. The members start low and cut their own path. The promotion borrows from video games and medieval fantasy: the tracklist is called the EPISODE LIST, the intro film is OPENING SEQUENCE, and the concept film is MAIN SEQUENCE, subtitled WE ARE UNCROWNED. Every member has a writing credit somewhere on the album.

Release day ends with a comeback show, THE WAY BEGINS, at YES24 Live Hall in Gwangjin-gu, Seoul, at 8 p.m. The AMPERS&ONE YouTube channel carries the teasers as they come out. If you want the physical album while you're in the city, our guide to where to buy K-pop albums in Seoul covers the shops, and this month's K-pop comebacks lists what else lands the same week, including LNGSHOT.