Ampers&One (; stylized in all caps) is a South Korean boy band formed and managed by FNC Entertainment. The group consists of seven members: Kamden, Brian, Jiho, Siyun, Kyrell, Mackiah, and Seungmo. They debuted on November 15, 2023, with the single album Ampersand One.
Name Ampers&One is a fusion of the symbol "& (ampersand)" and the word "one". The name reflects the group's wish "to achieve its dreams by coming together as a group".
History Pre-debut Prior to the group's debut, Siyun was a trainee under YG Entertainment. He participated in YG's survival show YG Treasure Box in 2018 but was eliminated in the eighth episode.
In 2021, Kamden and Jiho participated in the MBC survival show Extreme Debut: Wild Idol but both were eliminated in the third episode.
In 2023, Kamden, Brian, and Jiho took part in the Mnet reality competition show Boys Planet, with Kamden and Jiho representing FNC Entertainment and Brian being a Yuehua Entertainment trainee. Jiho was eliminated in the fifth episode after ranking 55th. Subsequently, Brian ranked at 37th place and was eliminated in the eighth episode. Kamden participated in the finale, ranking 17th.
2023–2024: Debut with Ampersand One, One Hearted, and One Question On September 5, 2023, FNC Entertainment announced that they would be debuting a seven-member boy group in early 2024. Later that month, on September 26, the agency announced a change of plans, with the group's debut brought earlier to November 2023. In the same press release, they confirmed Kamden and Jiho as the first two members of the lineup.
On October 18, FNC Entertainment announced that the group would be debuting under the name "Ampers&One". On the same day, Brian was revealed as the third member of the confirmed lineup.
On November 15, the group debuted with the single album Ampersand One and its lead single "On and On", with lyrics co-written by Kamden.
On March 26, 2024, the group released their second single album One Hearted and its lead single "Broken Heart".
On October 22, 2024, the group released their first extended play One Question and its lead single "He + She = We".
2025: First international tours and Wild & Free On December 27, 2024, Leo Presents announced that they had signed a contract with the group to bring them on their first United States tour, titled My First. The tour began on February 17, 2025, and comprised a total of 19 stops across 18 different states. Following the last show of the tour on March 18, FNC Entertainment announced that the group would be releasing a new EP, Wild & Free, on April 8.
Members
Kamden () – leader, rapper, dancer Brian () – vocalist Jiho () – vocalist Siyun () – vocalist Kyrell () – vocalist Mackiah () – rapper Seungmo () – vocalist
Discography Extended plays + List of extended plays, showing selected details, selected chart positions, and sales figures Title Details Peak chart positions Sales KORPeak chart positions on the Circle Album Chart: Ampersand One: One Hearted: One Question: Wild & Free: Loud & Proud: Definition: One Question Released: October 22, 2024 Label: FNC Entertainment Formats: CD, digital download, streaming 7 KOR: 71,442Cumulative sales of One Question:
Wild & Free Released: April 8, 2025 Label: FNC Entertainment Formats: CD, digital download, streaming 3 KOR: 80,307Cumulative Sales of Wild & Free:
Loud & Proud Released: August 12, 2025 Label: FNC Entertainment Formats: CD, digital download, streaming 2 KOR: 111,616Cumulative Sales of Loud & Proud:
Definition Released: April 8, 2026 Label: FNC Entertainment Formats: CD, digital download, streaming 3 KOR: 147,213Cumulative Sales of Definition:
Single albums + List of single albums, showing selected details, selected chart positions, and sales figures Title Details Peak chart positions Sales KOR Ampersand One Released: November 15, 2023 Label: FNC Entertainment Formats: CD, digital download, streaming 11 KOR: 58,470Cumulative Sales of Ampersand One
One Hearted Released: March 26, 2024 Label: FNC Entertainment Formats: CD, digital download, streaming 10 KOR: 66,243
Singles + List of singles, showing year released, selected chart positions, and name of the album Title Year Peak chart positions Album KOR Down.Peak chart positions on the Circle Download Chart: "On and On": "Broken Heart": "He + She = We": "Kick Start": "That's That": "God": "On and On" 2023 98 Ampersand One "Broken Heart" 2024 76 One Hearted "He + She = We" 135 One Question "Kick Start" 2025 88 Wild & Free "That's That" 74 Loud & Proud "God" 2026 112 Definition
Other charted songs Title Year Peak chart positions Album KORPeak chart positions on the Circle Download Chart: "Get Famous", "삐걱삐걱" (Seesaw), "I'm Down", "일냈어" (Did It), "길을 비켜" (Move Out): "Tears in Your Smile" (너의 웃음 속에 눈물이 보여), "All Eyes On You", "What You Talking About" (뭐라는 거야), "My Way" (나는 나대로), "Hit Me Up": "Get Famous" 2025 119 Loud & Proud "삐걱삐걱" (Seesaw) 120 "I'm Down" 121 "일냈어" (Did It) 122 "길을 비켜" (Move Out) 124 "Tears in Your Smile"(너의 웃음 속에 눈물이 보여) 2026 130 Definition "All Eyes On You" 131 "What You Talking About"(뭐라는 거야) 132 "My Way"(나는 나대로) 133 "Hit Me Up" 134
Awards and nominations + Name of the award ceremony, year presented, award category, nominee(s) of the award, and the result of the nomination Award ceremony Year Category Nominee / work Result Hanteo Music Awards 2023 Rookie of the Year – Male Ampers&One 2025 Emerging Artist MAMA Awards 2024 Artist of the Year Best New Male Artist 2025 Fans' Choice Top 10 – Male
References