Group Members

Hongseok (PENTAGON) Profile, Bio, & Facts 

Hongseok (PENTAGON)

Hongseok (홍석) is a South Korean singer and a member of the K-pop boy group ‘PENTAGON’ under Cube Entertainment. 

Hongseok (PENTAGON) Profile

Stage NameHongseok (홍석)
Birth NameYang Hong Seok (양홍석)
BirthdayApril 17, 1994
Active Years2014–present
Age30 (in 2024)
Zodiac SignAries
Height180 cm (5’11″)
Weight68 kg (150 lbs)
Blood TypeA

Hongseok (PENTAGON) Facts:

Early Life

– He was born in Seoul, South Korea.
– He lived in various locations outside South Korea from ages 7 to 16, including San Diego (California), Madison (Wisconsin), Singapore, and China.
– He spent a total of 11 years living outside South Korea.
– He was educated at Hwa Chong International School (Singapore) from 2007 to 2010, Tianjin Nankai High School (China), and the University of International Business and Economics in Beijing (dropped out to pursue a music career).
– During his time in Singapore, he was the top swimmer at Hwa Chong International School.

Personal Life

– He has an older brother named Yang Junseok.
– He thinks, Hui could be the best at throwing surprise party. (BuzzFeed Celeb)
– He was nicknamed Yang Jr, Hongseokkie, and Honggie.
– He thinks Yanan suits the character of Loki from MCU.
– He enjoys reading books and studying languages as hobbies.
– He thinks Yuto suits the character of Wong from MCU.
– He assisted in writing Pentagon songs “Find Me,” “Round 1,” and “Round 2.”
– He is fluent in Korean, Chinese, and English.
– If he could trade his body with another member, he would choose Hui.
– He was part of the “Extra Squad” with Shinwon, known for assuming strange and funny poses in Pentagon photos.
– He thinks that Hui is the strongest.
– On May 3, 2022, he commenced his service as an active duty soldier.
– He thinks Shinwon suits the character of Star-Lord from MCU.
– Due to symptoms of depression, panic disorder, and agoraphobia, he received an early discharge from his military service on December 26, 2022.
– He smells the best among members. (Seventeen Superlatives)
– He enjoys working out.
– He considers his abs as his best attribute.
– He wants to shoot a fried chicken commercial. (hello82)
– If given the opportunity, he would like to try out being a lawyer for a day.
– His favorite toy was Digimon when he was young.
– He holds a valid driver’s license.
– Previously, Hongseok and E’Dawn were roommates in the old Pentagon dorm.
– He can squash an apple with one hand. (Esquire Korea)
– He is regarded as the best cook in the group by Jinho, earning him the nickname “home mom.”
– In 2017, he was involved in a dating rumor with trainee Lee Soohyun, from Produce 101. Cube clarified they were just friends.
– His essential include a handgrip. (GQ Korea)
– He has a strong fondness for watching the show “Radio Star”.
– If he were a song, he would be “Stronger” by Kelly Clarkson. (Panorama)
– His likes weight training. (kpopconcerts)
– If he possessed a superpower, he would opt for the ability to control minds.
– His motto is “If I make it to the end, I will be the winner”.
– He likes Shinwon’s wide shoulders.
– Hongseok’s ideal type is someone who shares similar preferences and with whom he can enjoy meals.
– He is jealous of Shinwon’s physiques.
– He scratches his head when he is embarrassed.
– In the game Pentagon Plays Who’s Who, he expressed his wish to swap bodies with Hui due to Hui’s perceived good fortune.
– According to him, Soft types are Yeo One, Kino, Wooseok, Jinho, and Yuto while hard types are Hui, Hongseok, and Shinwon.
– His ideal vacation involves traveling abroad with his fellow members.
– He thinks Hui is best looking.
– It’s a habit of Hongseok’s to plan out his meals the day before, often searching for ideas on the internet.


– He originally the Lead Vocalist in Pentagon, but became the Main Vocalist after Jinho enlisted.
– He participated in the Ice Bucket Challenge and the Miracle365 x Ice Bucket Challenge Run to support ALS fundraising.
– He was a former trainee under YG Entertainment.
– He was a contestant on YG’s show “MIX&MATCH,” which formed the group iKON.
– He auditioned for the model and vocal teams at the JYPE 9th Audition Final Round in 2012 but did not pass.
– He modeled alongside HyunA for Clride.n.
– He joined CUBE Entertainment in 2015.
– He appeared in the movie “The Love That’s Left” (2017).
– He was featured in the TV series “Best Chicken” as Bae Ki-Beo.
– He was featured in one of Jinho’s “Magazine Ho” videos, singing “Lay Me Down” by Sam Smith.
– He starred in web-dramas such as “One the Campus” as Hee-Yeol, and “Anniversary Away” as Hong Woojae.
– He participated in various reality shows including “Tour Avatar”, “Idol Tour”, “Just Happened”, “Visiting Teachers”, “Hit Man”, “Battletrip”, and “Idol Cooking Class”.
– He appeared on “King of The Masked Singer” as Ddangchil but was eliminated in the first round.
– He served as a panelist on episodes 29-30 of “Fantastic Duo”.
– He served as a special MC on “Simply Kpop” from February to May of 2018.
– He participated as a cast member in “Law of The Jungle in Myanmar”.
– On the variety show “Tutor”, he serves as the Chinese language tutor alongside Seventeen’s Vernon and WJSN‘s Luda.
– He also joined the cast of the show “Real Men 300”.
– He graced the cover of Men’s Health Korea in their July 2019 edition.
– Following the termination of his contract, he departed from CUBE Entertainment on November 6, 2023, yet he remains a member of PENTAGON.

Likes & Dislikes

– He likes roses.
– He likes Byredo Blanche fragrance.
– His favorite fashion item are shoes.
– His favorite superhero is Iron Man.
– Among his favorite songs is “Love Me Better” by James Blunt.

Instagram: _hongseokie

Streaming Platform Links
Genie | Bugs | Melon 

Hongseok Photos

Note: How did you get to know Hongseok? Mention your story in the comments section and also share more facts with us if you know!

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Park Emma

I'm a big fan of K-pop, especially the group EXO, and Baekhyun is my Bias. When I'm not writing about K-pop, I enjoy reading books. Join me as I explore the world of K-pop and literature through my writing.