F.Cuz Member Profiles 2026: Complete Guide to the K-Pop Group's Lineup, Facts & Career

F.Cuz (포커즈, pronounced “Focus”) is one of the longest-running Korean boy bands still standing from the 2010 K-pop idol generation. If you’ve been typing “F.Cuz member profiles 2026” into a search bar, you’re in the right place — this guide walks you through everything, from birthdays and positions to fun facts, discography, and live performance history.

Let’s start with the basics. F.Cuz is a South Korean boy group formed in Seoul and managed today by On The Bill Company. The group debuted on January 8, 2010 with the digital single “Jiggy,” and over the years it has welcomed and said goodbye to a few faces — but the F.Cuz lineup as most fans know it today includes Jinon, LeeU, Kan, Yejun, Daegeon, and Raehyun. Along the way, the group has worked with agencies including CAN&J Entertainment, Tunes-Will Entertainment, 4 Leaf Clover Music, and Seedmusic (their Taiwanese partner label), and built a fanbase that spans Korea, Japan, Taiwan, and Hong Kong.

This article is your one-stop F.Cuz fan guide: a K-pop boy group profile breakdown covering member ages, heights, positions, zodiac signs, achievements, discography, music videos, and a look at where things stand for F.Cuz in 2026. Whether you’re a long-time member of their official fandom “For U” or just discovering the group’s catchy 2010s discography, stick around — we’ve packed this with everything you’ll want to know.

Before we dive into individual member bios, let’s cover the group-level facts every fan should know. F.Cuz isn’t a brand-new rookie group — it’s a group with over a decade of history, several lineup changes, and a loyal international fanbase. Here’s the quick-reference rundown.

• Group Name: F.Cuz (포커즈)
• Group Name Meaning: Short for “For Century Ultimate Zest,” pronounced like the word “Focus”
• Origin: Seoul, South Korea
• Genre: K-pop, Pop, Dance
• Debut Date: January 8, 2010, with the digital single “Jiggy” on KBS Music Bank
• Years Active: 2010 – present (activities currently on hold; see Achievements section)
• Current Agency: On The Bill Company
• Former Agencies: CAN&J Entertainment, Tunes-Will Entertainment, 4 Leaf Clover Music
• Current Members: Jinon, LeeU, Kan, Yejun, Daegeon, Raehyun (6 members)
• Official Fandom Name: For U (Korea), F:antasia (Japan), F1 (China)
• Fandom Color: Twinkle Light Silver
• Official Socials: Instagram @f.cuz_official · X @fcuz0108 · Facebook OfficialFCUZ

The Band Member Profiles

Here’s where we get into the heart of this F.Cuz member profiles 2026 guide. The current lineup has six members, each bringing something different to the table — leadership, vocals, rapping, dancing, and visual appeal. Below you’ll find a quick-reference table, a detailed checklist for each member, and 10 fun facts apiece.

Basic Member Information Table

Detailed Member Checklist

Jinon

Jinon

He’s an original member and has served as F.Cuz’s leader since debut.

Born in Busan, South Korea, on July 13, 1989.

Before debuting, he was a pre-debut trainee in project group GM6, which later became Supernova.

He appeared in the 2009 drama Cinderella Man, playing a younger version of Kwon Sang-woo’s character.

He had a brief cameo in SG Wannabe’s “Gashiri” music video alongside T-ara’s Eunjung.

He appeared on the show Idol United in 2010.

Members consider him the best cook in the group.

He’s afraid of heights.

He attended Anyang High School of Arts, the same school as Highlight’s Junhyung and MBLAQ’s Seungho.

In November 2019, he co-founded the agency On The Bill Company with bandmate Raehyun.

LeeU

LeeU

He’s an original member and was F.Cuz’s main vocalist.

His father is the famous trot singer Sul Woon-do.

As a young teen, he reportedly lost about 60 lbs in a month to pursue a singing career.

He was a well-known ulzzang before debuting as an idol.

He briefly went solo under the stage name “U,” releasing the OST track “Listen to You” for the SBS drama Gourmet.

He left F.Cuz in August 2011 to pursue a solo career.

In October 2013, he re-debuted in the group M.Pire under the name Lumin.

He officially rejoined F.Cuz in 2022, over a decade after his departure.

He’s fluent in English and Japanese.

He took part in F.Cuz’s 2024 ballad sub-unit, F.CUZ Sons, alongside Raehyun and Daegeon.

Kan

Kan

He’s an original member, holding the vocalist and main dancer position.

He acted in dramas like Soul and Assorted Gems before his idol debut.

In January 2011, he was involved in a serious car accident while returning from filming the drama Athena: Goddess of War, which forced the group to pause promotions.

He’s a big fan of K-pop star Rain, and trained pre-debut in the same Anyang dance team Rain once belonged to.

He’s friends with Kiseop of U-KISS.

He attended the same high school as bandmate Yejun.

He’s completed his mandatory military service.

At 184 cm, he’s the tallest member of the group.

He’s one of only three members (alongside Jinon and Yejun) who debuted with F.Cuz back in 2010.

His blood type is B, the same as Jinon and Yejun.

Yejun

Yejun

He’s an original member and holds the title of the group’s maknae (youngest member).

He’s a self-described fan of Michael Jackson.

He’s friends with Soohyun of U-KISS.

He went to the same high school as bandmate Kan.

He’s completed his mandatory military service.

On April 3, 2022, he married former RaNia member T-ae.

In September 2022, the couple welcomed their first daughter.

He handles lead vocal and rap duties in the group.

He’s one of three members (with Jinon and Kan) who’ve been with F.Cuz since its very first lineup in 2010.

His stage name “Yejun” comes directly from his birth name, Sim Yejun.

Daegeon

Daegeon

He joined F.Cuz in late 2011/early 2012 alongside Raehyun to fill the gap left by LeeU’s departure.

He began his idol career as a trainee under Xing Entertainment, the company that later produced members of U-KISS, Beast, and The Boss.

Before F.Cuz, he was a pre-debut member of Double B21, which later became Apeace, and took part in their “S.O.S.” promotions before leaving.

He holds the main vocalist position in F.Cuz.

He’s completed his mandatory military service.

He studied at Korea National Open University.

He’s active on Instagram under the handle @daegeon_ii.

He’s also on X (Twitter) as @kdg5902.

He took part in F.Cuz’s 2024 ballad sub-unit, F.CUZ Sons.

He’s stayed with the group continuously since joining in 2012, making him one of its most consistent members.

Raehyun

Raehyun

He joined F.Cuz in late 2011/early 2012 alongside Daegeon, replacing LeeU.

He holds the vocalist and visual position in the group.

Before debut, he had acting credits in dramas including Gloria, Over the Rainbow, and Rock, Rock, Rock.

He also appeared in the film See You After School and starred in a Samyang ramen commercial pre-debut.

He studied at Sungkyul University and Anyang Art High School.

He served in the South Korean navy from October 2015 to July 2017.

In November 2019, he co-founded On The Bill Company with bandmate Jinon.

He speaks Japanese.

His hobby is reading books.

He has a pet dog.

Achievements

Over more than a decade, F.Cuz has built a track record that’s modest by mega-group standards but genuinely impressive for a group that’s weathered multiple lineup changes and label transfers. Here’s a snapshot of what the group has accomplished:

• Debuted on Music Bank on January 8, 2010 with “Jiggy,” entering the Gaon Digital Chart.
• Signed a deal with Taiwanese label Seedmusic just one month after debut, expanding promotions into Taiwan and Hong Kong early in their career.
• Their first mini-album, No One, charted at #10 on the Gaon Album Chart in 2010.
• Gorgeous (2010) reached #11 in Korea and #140 on the Japanese Oricon chart.
• For Century Ultimate Zest (2012) peaked at #15 in Korea and #161 in Japan, selling over 2,400 copies there.
• Their Japanese single “Two of Us” (2015) became their highest-charting Japanese release, peaking at #3 on the Oricon Singles Chart.
• Built a genuinely international fanbase across Korea, Japan, Taiwan, and Hong Kong through years of cross-border promotion — a rarity for a mid-sized group from this era.
• In 2023, the original lineup reunited for the single “Summer Days,” marking the first time all past and present members appeared together in over a decade.
• In 2024, the group launched a ballad sub-unit, F.CUZ Sons (featuring Raehyun, LeeU, and Daegeon), proving the brand still had creative life left in it.
• Transparency note for 2026: As of this writing, F.Cuz’s agency announced in April 2025 that the group’s official activities and fanclub were being suspended due to internal management issues. There’s no confirmed comeback, new release, or tour for 2026 at this time — we’ll update this guide if that changes.

Discography and the Music Video

F.Cuz’s catalog spans both Korean and Japanese releases, reflecting the group’s dual-market strategy throughout the 2010s.

Korean Mini-Albums

• No One (March 11, 2010) — title track “No One”

• Gorgeous (November 18, 2010) — title track “Midnight Sun”

• For Century Ultimate Zest (April 27, 2012) — title track “No.1”

• Bargaining for Love (September 17, 2014) — title track “Cha-Ga-Wa”

Notable Korean Singles

• “Jiggy” (debut single, 2010)

• “Dreaming I” (꿈꾸는, 2012)

• “One Love” (2014)

• “Don’t Touch” (Korean Ver., 2015)

• “Love Or Truth” (2017)

• “Shine” (2020)

• “Summer Days” (2023 reunion single)

• “Dear.Me” (2024)

Japanese Discography Highlights

• “Never Let You Go” (2011)
• “Luv Holic / Around You” (2011)
• “Drawing Heart” (2012)
• “Hello Again” (2013)
• “Change” (2013)
• “Feeling My Soul” (2014)
• “Mō Ichido Dake (Remind)” (2014)
• “Two of Us” (2015) — their best Japanese chart performance
• “Forever” / “Wonder World” (2016)

Music Video Highlights: F.Cuz’s MVs for “Jiggy,” “No One,” and “Midnight Sun” helped define their early electro-pop, dance-driven concept, while later releases like “One Love” and “Cha-Ga-Wa” leaned into a more mature, emotional pop sound. Several tracks also appeared on Korean drama soundtracks (OSTs), including Secret Agent Miss Oh, The Magic Thousand-Character Classic, My Regrettable Boyfriend, and Missing Korea.

Live Performances and World Tours

F.Cuz built much of its fanbase through consistent stage promotions, Japanese concert tours, and fan-meeting events rather than massive arena world tours — typical for a group of their size. Below is a table covering their past live activity and the current outlook for 2026.

If you’re hoping to catch F.Cuz live in 2026, the honest answer right now is: there’s nothing officially scheduled. Keep an eye on their Instagram @f.cuz_official and X @fcuz0108 for any updates — we’ll revise this guide the moment new tour or comeback news drops.