Yuk Jun-seo (Korean: 육준서; born April 1, 1996) is a South Korean painter, actor, model, YouTuber, former soldier. He gained public recognition as a former member of the Republic of Korea Navy Special Warfare Flotilla (UDT/SEAL), where he served in the Explosive Ordnance Disposal (EOD) unit. He transitioned into the entertainment industry following his appearance on the military survival program "The Iron Squad Season 1" (Korean: 강철부대, also known as "Steel Unit") in 2021, and has since built a multifaceted career in acting, fine arts, content creation, and variety shows.
Early life and military service
Yuk Jun-seo was born on April 1, 1996, in South Korea. He graduated from Gimpo Jeil High School. He has a younger brother, Yuk Jun-hee (born 1998), who is also a former Navy special forces member (SSU) and now works as a firefighter in disaster rescue.Yuk Jun-seo enlisted in the Navy as a non-commissioned officer in December 2014 (246th class). He completed UDT/SEAL training in September 2016 (62-1 class) and served approximately four years in the Explosive Ordnance Disposal Battalion of the Naval Special Warfare Flotilla. He was discharged as a sergeant (reserve) in February 2019.
Career
Art career
After his military discharge, Yuk Jun-seo pursued a career as a visual artist, specializing in painting and drawing with a psychedelic, Eastern-influenced style. His works often incorporate techniques such as layering tracing paper, crumpling or tearing materials into installations, and painting on unconventional surfaces like bones. He has been influenced by artists like Francis Bacon in expressing themes of anxiety and fear.He held his first exhibitions post-discharge and has participated in numerous solo and group shows, including:
- Anxiety: Trembling (2020) at Hapjeong Bin Kan.
- mRNA (2021) at Seongsu Galleria Fore.
- Fragments: CRANIUM (2024), his first sketch installation solo exhibition at Albert Kumho.
His YouTube channel "육준서 6dory" (launched around 2020, with significant activity resuming in 2024) has over 150,000 subscribers, featuring art processes, personal content, and more. He maintains a large Instagram following (@6dory, over 500,000 followers) and a separate artist account (@yukjunsx).
Entertainment career
Yuk Jun-seo first appeared on television in 2021 as a UDT team member on Channel A's "The Iron Squad Season 1" (2021), where his stoic demeanor and artistic background drew attention. This led to guest spots on variety shows like "Omniscient Interfering View" (2018, Korean: 전지적 참견 시점), "Law of Symbiosis Season 1" (2022, Korean: 공생의 법칙), and others.He gained further visibility through Netflix's "Single's Inferno Season 4" (2025, Korean: 솔로지옥 시즌4) as a participant, where he excelled in physical challenges and earned a reputation as a "survival expert." He also competed on shows like "I Am Boxer" (2025, Korean: 아이 엠 복서) and appeared on "Immortal Songs: Singing the Legend" (2011, Korean: 불후의 명곡: 전설을 노래하다).In acting, he debuted in the 2022 PUBG Universe film "Red Face" (Korean: 붉은 얼굴) as Oh Jun-seo (a role based on himself). He played the supporting role of Bang Jin-ho (a sergeant in the Crow Unit) in Netflix's "Sweet Home Season 2" (2023, Korean: 스위트홈 시즌2) and "Season 3" (2024, Korean: 스위트홈 시즌3). In 2025, he portrayed Lee Geol-jae (or Lee Gwi-jae) in the Wavve series "One: High School Heroes" (Korean: One: 하이스쿨 히어로즈) and had a guest role in "The Practical Guide to Love" (2026, Korean: 미혼남녀의 효율적 만남).
Personal life
Yuk Jun-seo is known for his multifaceted talents and hobbies, including playing the piano (influenced by his mother, a piano teacher), boxing, judo, hiking, running, and drawing. He favors cats over dogs, enjoys novels, art history, and manga (such as "Berserk"), and has a high stamina level. His Myers-Briggs Type Indicator (MBTI) personality types are reported as INTP (Logician) and ENTP (Debater). He is a non-smoker (though he tried for a photoshoot) and drinks minimally.His username "6dory" combines "6" (from his surname Yuk, sounding like six in Korean) with "dory" from a special forces song reference.
Filmography
Film
| Year | Title | Role | Notes |
|---|
| 2022 | "Red Face" | Oh Jun-seo | Main role; PUBG Universe short film |
Drama
| Year | Title | Role | Network/Platform | Notes |
|---|
| 2023 | "Sweet Home Season 2" | Bang Jin-ho | Netflix | Supporting role |
| 2024 | "Sweet Home Season 3" | Bang Jin-ho | Netflix | Supporting role |
| 2025 | "One: High School Heroes" | Lee Geol-jae (Lee Gwi-jae) | Wavve | Supporting role |
| 2026 | "The Practical Guide to Love" | Lee Ui-yeong’s blind date | JTBC | Guest role |
Variety and reality shows
| Year | Title | Role/Participation | Network/Platform | Notes |
|---|
| 2011 | "Immortal Songs: Singing the Legend" | Guest (Episode 708) | KBS | - |
| 2015 | "Knowing Bros" | Guest (Episode 488) | JTBC | - |
| 2015 | "King of Mask Singer" | Contestant (Episode 496) | MBC | - |
| 2016 | "My Little Old Boy" | Guest (Episode 444) | SBS | - |
| 2018 | "Omniscient Interfering View" | Guest (Episodes 173-174, 340) | MBC | Multiple appearances |
| 2021 | "The Iron Squad Season 1" | UDT team member (Regular) | Channel A | Won season 1 |
| 2021 | "Truman Game - Find the Real" | Guest/Supporter | - | - |
| 2022 | "The Iron Squad Season 2" | Guest (Episodes 9-12) | Channel A | - |
| 2022 | "Law of Symbiosis" | Guest (Episode 2) | SBS | - |
| 2022 | "DNA Mate" | Guest (Episodes 1-2) | MBC | - |
| 2024 | "Steel Earth" | Fixed guest (Episodes 1, 3) | Channel A | Pre-broadcast |
| 2025 | "Single’s Inferno Season 4" | Participant (Regular) | Netflix | - |
| 2025 | "I Am Boxer" | Contestant (Regular) | tvN | - |
| 2025 | "King of Mask Singer" | Participant (Episode 496) | MBC | Stage name I Work Out, solo song "A Beautiful Farewell" (Korean: 아름다운 이별) by Kim Gun-mo and duet (with Ryu Su-jeong of Lovelyz) song "Myeongdong Calling" (Korean:명동콜링) by Crying Nut. |
Source
Namu
