Acting · Seoul, South Korea · Born January 13, 1995
Lee Seung Jun, better known by his stage name J-US, is the leader, vocalist and dancer of the boy group ONF. On December 27, 2021, he enlisted as an active-duty soldier.
![2026 ONF CONCERT [THE MAP: BEYOND THE HORIZON]](https://image.tmdb.org/t/p/w342/vQmZPhEa8KrUCwrqRqMpl9pube9.jpg)
Movie2026 ONF CONCERT [THE MAP: BEYOND THE HORIZON]
2026
as SEUNGJUN
![2025 ONF CONCERT [THE MAP:STRANGER’S PATH]](https://image.tmdb.org/t/p/w342/pvF5lXWpkD3HuDDJSXeXtKXlZD1.jpg)
Movie2025 ONF CONCERT [THE MAP:STRANGER’S PATH]
2025
as SEUNGJUN
![온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 2](https://image.tmdb.org/t/p/w342/whume1STRxwi0EVBYU8ZMk669nG.jpg)
Movie온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 2
2024
as SEUNGJUN
![온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 1](https://image.tmdb.org/t/p/w342/zyN3yVwFR1NoZGgxd77aZ4etce7.jpg)
Movie온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 1
2024
as SEUNGJUN
![온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 2](https://image.tmdb.org/t/p/w342/6DhiTgCYAg09SDRLGCktfByp6xD.jpg)
Movie온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 2
2024
as SEUNGJUN
Movie온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 1
2024
as SEUNGJUN
![ONF [FOCUS ON AND OFF]](https://image.tmdb.org/t/p/w342/Au7UBGXv8opgUV1V7lUzl4Bu2i2.jpg)
TVONF [FOCUS ON AND OFF]
2024
as SEUNGJUN
![ONF 2021 LIVE CONTACT :: CODE #1. [REVERSE]](https://image.tmdb.org/t/p/w342/4wjPi5x2igYJI9jrbE5QcJhSW8X.jpg)
MovieONF 2021 LIVE CONTACT :: CODE #1. [REVERSE]
2021
as SEUNGJUN
TVDive Into ONF
2021
as J-US
TVCan I Step In?
2020
as Kwon Sang Hae
TVRoad to Kingdom
2020
as Self - Contestant
TVIdol Radio
2018
as Special DJ
TVStar Road
2018
TVWeekly Idol
2011
as Self
