My Take
Ong Seong-wu is one of those rare survival-show graduates who actually made you forget the show that launched him — which is saying something, because Produce 101 Season 2 was a phenomenon. He placed fifth out of about a hundred trainees, became part of Wanna One, and by the time that group disbanded in 2019 he'd already figured out exactly who he wanted to be next. His pivot to acting in At Eighteen was genuinely impressive: not the usual idol-trying-drama awkwardness, but something warm and considered. He went to Hanlim Multi Art School, the same training ground as half of K-pop royalty, and that pedigree shows — there's a craft behind the charisma. Virgo energy, deliberate and detail-oriented, is basically written all over how carefully he's managed a dual career without overexposing himself. Keeping his personal life tightly private while staying active on Instagram is a move I respect. Quietly building, consistently surprising.
Overview
Ong Seong-wu (Korean: 옹성우, born August 25, 1995) is a South Korean singer and actor. He is known for his participation in the survival reality show Produce 101 Season 2, where he finished in fifth place, and is a former member of the show's derivative boy group Wanna One. Following Wanna One's disbandment, Ong made his acting debut with the drama At Eighteen (2019) directed by Shim Na-yeon.
1. Profile
- Name (English)
- Ong Seongwu
- Name (Japanese)
- オン・ソンウ
- Reading
- おん・そんう
- Born
- August 25, 1995 (age 30)
- Zodiac / Chinese zodiac
- Virgo / Boar
- Origin
- Incheon, South Korea
- Blood type
- Private
- Height
- Private
- Agency
- Private
- Occupation
- singer / actor
2. Background
- Elementary school
- Private
- Junior high
- Private
- High school
- Private
- University
- Private
3. Relationships
- Spouse
- Private
- Children
- Private
- Parents
- Private
- Siblings
- Private
4. Personality
Motto
Private
6. Links
7. About this entry
Tags
- Last updated
- 2026-06-02
Facts are limited to publicly available information up to 2024; non-public items are marked "Private / Unknown". English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.