Ong Seongwu Profile (Updated!)

Ong Seongwu Profile and Facts:

Ong Seongwu (옹성우) is a South Korean singer and actor under Fantagio Entertainment, and a former member of the project boy group Wanna One. He made his solo debut on January 9, 2020 with the digital single “We Belong”.

Fandom Name: 위로 (WELO, which means ‘consolation’ in Korean)
Fandom Color: blue

Official Signature:

Official SNS:
Website: Fantagio | ONG SEONGWU
Instagram: @osw_onge
X: @officialtwt_OSW
YouTube: ONG SEUNG WU
Weibo: 邕圣祐_825
Daum Cafe: 옹성우 (ONG SEONG WU) 공식 팬카페

Name: Ong Seongwu (옹성우)
Birthday: August 25th, 1995
Zodiac Sign: Virgo
Chinese Zodiac Sign: Pig
Height: 180 cm (5’10″)
Weight: 63 kg (139 lbs)
Blood Type: A
MBTI Type: ENFP⇒INTP

Ong Seongwu Facts:
– His first name was formerly romanized as Seongwoo.
– He was born and raised in Incheon, South Korea.
– He has an older sister.
– School education: Hanlim Multi Art School.
– College education: Dong Seoul University, Department of Acting (graduated)
– His shoe size is 265 mm.
– His left eye is 2.0, and the right one is 1.5.

– He has three small moles on his left cheek, which fans name as ‘constellation’ and ‘cat whiskers’.
– His religion is Methodist Protestant Christianity.
– His nicknames are ONG, Ongja, Ongging, Ong Soon, Hellenism (due to looking like Western males), Ongvid, 4th visual revolution, Space and Stars, Tteongwoo, Ongyangi, Seal, Ongramjwi, Ong-upid, Ong Sweet, and many more.
– He is a very good dancer, especially popping and freestyle.
– He used to be a member of the known Bboy dance crew 20th Century BBoys.
– He used to practice aikido.
– He can play the drums and guitar.
– He is aloof and goofy off stage, and become a whole different person on stage.
– After he folds his ears he can unfold them without touching them.
– He can turn his tongue 180 degrees and stretch his face skin.
– He is a skilled hair stylist, what he showed on PD101 S2.
– He also likes taking pictures and selfies.
– He is a cinephile.
– He is good at selecting songs according to the mood.
– He likes teddy bears.
– He tends to wear any clothes he is given for a long time.
– He is named as handsome by both females and males.
– His favorite foods are salty foods, ham, hamburgers, pizza, spaghetti, and instant noodles, choux a la creme, pineapple pizza, sundae and seasoned ribs.
– His least favorite foods are herbs.
– His favorite drinks are soda and coffee, especially caramel macchiato.
– His alcohol capacity is 2 bottles of soju.
– His favorite Hogwarts house is Gryffindor.
– His favorite superhero is Doctor Strange.
– To insects, he is scared of flying one, but can pet crawling and slow-moving one.
– He is sporty, he could master ball games when he hadn’t known how to play them.
– He used to have multiple part-time jobs. He used to work at a cafe, and as a model.
– Ong Seongwu and BTOB’s Sungjae were classmates.
– His role model is EXO’s Kai. (Happy Together)
– In 2018, he was an MC for MBC Music Core.
– He appeared in Huh Gak‘s “Only You” MV.
– Seongwu’s surname ‘Ong’ is a rare surname in Korea. He never have met one and he said there was never a person who got his name after hearing it once (Produce 101 S2 Ep 1)
– Ong and ASTRO‘s JinJin attended the same school but Ong is a senior. From there, they become close to each other.
– He enlisted into mandatory military service on April 17th, 2023 and discharged on October 16th, 2024.
– Seongwu’s Ideal Type: Someone older than him.

PD101 S2 Information:
– He had 8 months of being a trainee prior to participating.
– His motto was “I will work harder than anyone else, develop quickly, and do well.”
– He named as his hobby dancing recklessly to the music he turned on.
– He named as his specialty playing drums.
– He chose to be graded A on episode 1.
– He was ranked 8th on episode 1.
– He was graded A after the initial evaluation.
– He was ranked 4th on episode 2.
– He performed “Sorry Sorry” on episode 3. His positions were Center and Sub Vocalist 4.
– He was ranked 4th on episode 3.
– He was ranked 4th on episode 5.
– He was ranked 6th on episode 6.
– He performed “Get Ugly” on episode 7. His position was Dancer.
– He was ranked 7th on episode 8.
– He performed “NEVER” on episode 9. His position was Sub Vocalist.
– He was ranked 8th on episode 10.
– He performed “Hands on Me” on episode 10. His positions were Leader and Sub Vocalist 2.
– He ended PD101 on the 5th rank with a total of 984,756 votes.
– He became well-known for ‘clapping the slate’ before starting rehearsals.
– He came to like sweets during this show.
– During Produce 101 many participants said that they consider Seongwu as the group’s mood maker.

Wanna One Information:
– His positions in Wanna One was Lead Vocalist and Main Dancer.
– He claims to be the best driver in Wanna One.
– When asked who would he introduce his sister to, if he had one, Daehwi said Seongwu and Daniel are dangerous. (Interview on PD101 called ‘We ask, You answer!)
– When Wanna One moved to the dorm, they chose the rooms after playing ‘Rock-Paper-Scissors’.
– Seongwu, Daniel, and Jisung used to share a room. (“Wanna One Go” ep. 1)
– Wanna One moved to 2 new apartments. Seongwu and Daniel used to share a room. (Apartment 2)
– Seongwu and Woojin‘s thumb are both flexible. They can bend it more than a normal person can. (Show Champion Behind)

Movies:
– Yeongje (별빛이 내린다) | as Choi Kyungsoo (2026)
– Jung’s Ranch (정가네 목장) | as Kang Jung Hoon (2026)
– Starlight Is Falling (별빛이 내린다) | as Choi Kyung Soo (2022)
– 20th Century Girl (20세기 소녀) | Netflix / as Poong Jun Ho, Joseph (2022)
– Life is Beautiful (인생은 아름다워) | as Jung Woo (2022)
– Seoul Vibe (서울대작전) | Netflix / as Jun Gi (2022)

Dramas:
– Boyfriend on Demand (월간남친) | Netflix / as Bae Hyunwoo (2026)
– Spooky in Love (오싹한 연애) | tvN / as Kang Minhwan (2026)
– When We Were Wired (첫사랑은 줄이어폰) | KBS 2TV / as Ki Hyeonha (2025)
– Strong Girl Nam-soon (힘쎈여자 강남순) | JTBC / as Kang Hee Sik (2023)
– Would You Like a Cup of Coffee? (커피 한잔 할까요?) | kakaoTV / as Kang Go Bi (2022)
– More Than Friends (경우의 수) | JTBC / as Lee Soo (2020)
– At Eighteen (열여덟의 순간) | JTBC / as Choi Jun Woo (2019)

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