Yeo One

Yeo One is a South Korean singer and actor, best known as the lead vocalist and visual of the K-pop group Pentagon. Since debuting in 2016, he has built a reputation for his warm vocal tone and expressive stage presence. Beyond group work, he has taken on lead acting roles in web dramas and released self-composed music, showcasing a range that extends beyond performance. Fans admire his diligent personality and the easy rapport he shares with bandmates, qualities that have made him a steady presence in the group's identity. [edit]

Yeo One was born and raised in Daejeon, a city about 140 kilometers south of Seoul. He grew up with an older sister and attended local schools, where he joined a school band and took part in band competitions. From childhood, he wanted to become a K-pop idol and began pursuing that goal through auditions, eventually becoming a trainee under Cube Entertainment for several years.

Before his official debut, he appeared in G.NA's 2014 music video for "Secret" and modeled for the fashion brand CLRIDE.n alongside HyunA in 2015. He also featured in Dongwoon of Beast's music video "KIMISHIKA" and performed at the Rainbow Concert, a fundraiser for mentally disabled children. These early opportunities gave him exposure and experience. In 2016, he competed on Mnet's survival show Pentagon Maker, which determined the final lineup of Pentagon. He secured a spot and debuted with the group on October 10, 2016. [edit]

Pentagon's debut EP, released on October 10, 2016, marked the start of Yeo One's career. That same year, he made his acting debut as the lead in the web drama Spark, playing Dexter, the leader of a fictional idol group. In 2017, he appeared with several Pentagon members in a cameo role on the drama Age of Youth 2, portraying the fictional group Asgard.

His acting continued with a role in the 2018 KBS musical drama Chosun Beauty Competition and a lead part in the 2019 web drama The Witch Store. In 2020, he had a cameo in the family sitcom Somehow Family. On the music front, he released his self-composed track "Let's Go" in September 2021, writing both the lyrics and music. The song, a modern rock-inspired piece, was well received by fans. In 2023, he was featured in the September issue of Men's Health magazine. His contract with Cube Entertainment was not renewed in October 2023, but he remains a member of Pentagon, which continues as a seven-member group as of 2026. [edit]

Yeo One is known within Pentagon as the visual and lead vocalist, with a warm and approachable image. Media and fans describe him as diligent, talkative, and positive. His representative emoji is a dog face, reflecting a playful side. On Instagram, his handle @9oo_sebumps is a playful reference to his birth year and the Korean pronunciation of "sebumps." He is considered one of the group's stronger actors, and his self-composed work has added depth to his artistic profile. Fans appreciate his brotherly bond with other members and his consistent dedication to both music and acting. [edit]

Yeo One currently holds no placement in the iFANN Global Top 1,000 or any published scope list, a status that reflects his standing as a respected artist without a current global ranking position. While he remains a central figure within the K-pop community and a beloved lead vocalist for Pentagon, the engine has evaluated his metrics without assigning him a specific ordinal rank among the world's most famous personalities. His career trajectory, marked by a significant agency transition to S27M Entertainment and a period of military service, has kept him active, yet these developments have not propelled him into the top-tier numerical brackets of the current global index.

The audience surrounding Yeo One does not operate under a formal, documented fandom name. While he maintains a personal Instagram presence with hundreds of thousands of followers who engage with his solo concerts and updates, there is no collective identity or organized group title recognized in available records. Unlike groups with named fanbases that drive specific campaigns or rituals, Yeo One's supporters are characterized by their individual devotion to his acting roles, self-composed music, and warm stage persona. The lack of a unified name suggests a fanbase that rallies around his artistic output rather than a structured organization with official titles or coordinated projects. This organic support structure allows fans to connect with his work directly through his social media channels and performance releases, fostering a community built on shared appreciation for his versatility as both a singer and actor without the need for a formalized label.[edit]

Yeo One possesses a unique vocal ability to mimic the sound of wooden percussion, a trick he famously demonstrated during an appearance on the show The Immigration. A strong swimmer and devoted dog lover, he balances his energetic public life with quiet personal interests. His cultural tastes lean toward the emotional depth of drama, citing That Winter, The Wind Blows as his favorite series, while his choice for cinema is the romantic time-travel film About Time. He looks up to actor Cho Inseong as a role model and is a serious admirer of musician Jung Jun Il from the band MATE, having memorized every one of his solo and featured tracks. Blue remains his favorite color, and the song Etude of Memory by Kim Dong Ryul holds a special place in his playlist. His living arrangements have shifted over the years; he once shared a dorm room with fellow member Yanan before eventually moving into a single room. Known as one of the most talkative members of Pentagon, he shares an easy rapport with his bandmates that defines much of the group's dynamic.

A notable chapter in his recent history involves a car accident resulting in back injuries and a temporary hiatus. Though often discussed in news reports regarding his recovery, this event stands as a documented incident rather than a piece of folklore. Additionally, his departure from Cube Entertainment alongside five other members sparked widespread discussion about the group's future, though rumors of disbandment were later clarified as unfounded. These events have become part of the narrative surrounding his resilience and professional journey.[edit]

Yeo One has an older sister, but her name and occupation have not been publicly shared. He has spoken warmly about his family in interviews but keeps details private. He does not have any pets that he has publicly mentioned. [edit]

Yeo One is associated with Pentagon members Jinho, Hui, Hongseok, Shinwon, Kino, and Wooseok, as well as former members Yanan, Yuto, and E'Dawn. He has collaborated with HyunA on a modeling campaign and appeared in music videos for G.NA and Dongwoon. His role model is actor Cho Inseong, and he is a fan of musician Jung Jun Il. [edit]

Yeo One has no publicly confirmed romantic relationships. He has not been linked to any dating partners, and no engagements or marriages have been reported. In interviews, he has stated that his ideal type is someone with a positive mindset. As of 2026, he is reportedly single. [edit]

Yeo One's individual net worth is not publicly documented. As a member of Pentagon, his income comes from group music sales, streaming, concert tours, fan meetings, and merchandise. He has also earned from acting roles in web dramas and occasional modeling work, such as the CLRIDE.n campaign with HyunA. His self-composed track 'Let's Go' may generate royalties. Without reliable financial disclosures for individual K-pop group members, no specific estimate can be given. [edit]