The Pulse of K-Entertainment

Ong Seong Wu
ActorFantagio

Ong Seong Wu

Ong Seong Wu (옹성우) had the hardest part of the post-idol transition figured out early: he never tried to outrun the pop-star polish that made him famous. After breaking out through Wanna One, he turned that visibility into a screen career under Fantagio that still carries the precision and audience command of a performer trained for live attention.

The official Fantagio profile shows how broad that lane has become. Ong now stretches from At Eighteen and Strong Girl Nam-soon into 2025 stage work in Shakespeare in Love, then into a 2026 run that includes Monthly Boyfriend on Netflix and tvN's Spellbound alongside Park Eun Bin and Yang Se Jong. He also still carries solo-music proof through releases like LAYERS and WE BELONG.

That mix is what makes Ong valuable now. He can hold fan-driven attention, pivot into romance or ensemble drama, and keep the idol-origin narrative working for him instead of against him.

1 articles8 creditsDebut: August 7, 2017South Korean

Gallery

Discography

2020
LAYERSMini Album
Soloist
2020
WE BELONGSingle
Soloist

Filmography

2026
Monthly BoyfriendK-Drama
Bae Hyun WooNetflix
2026
SpellboundK-Drama
Kang Min HwanPark Eun BinYang Se JongtvN
2023
Strong Girl Nam-soonK-Drama
Kang Hee Sik
2022
Seoul VibeFilm
Joon GiNetflix
2019
At EighteenK-Drama
Choi Jun Woo

Other Credits

2025
Shakespeare in LovePlay
Will Shakespeare

Fans Also Ask

Was Ong Seong Wu in Wanna One?
Yes. Ong Seong Wu rose through <i>Produce 101 Season 2</i> and debuted in <a href="/artists/wanna-one">Wanna One</a> in August 2017. That project-group launch gave him mass visibility before he shifted his center of gravity toward acting under Fantagio.
What is Ong Seong Wu doing in 2026?
Fantagio's official profile lists Ong Seong Wu in the 2026 Netflix series <i>Monthly Boyfriend</i> and tvN's <i>Spellbound</i>. Together, those projects position him inside both fan-facing romance casting and a broader drama conversation anchored by bigger ensemble stakes.
Does Ong Seong Wu still have a music career?
Yes. Ong Seong Wu's official profile still carries a real music trail, including the 2020 mini album <i>LAYERS</i> and the single <i>WE BELONG</i>. Even as acting has taken priority, those releases show he did not leave the soloist lane behind completely.
Which agency represents Ong Seong Wu?
Ong Seong Wu is represented by <a href="/brands/fantagio">Fantagio</a>. The company's official profile also links his Instagram, YouTube channel, and staff-run social surfaces, which gives HITKULTR a stronger first-party social stack than many actor pages usually offer.

Latest Articles

Composite promotional image featuring Ong Seong Wu, Park Eun Bin, and Yang Se Jong for tvN drama casting coverage.
K-Drama5 min read

Ong Seong Wu Joins Park Eun Bin and Yang Se Jong in tvN's Spellbound

Ong Seong Wu has officially joined tvN's Spellbound as original character Kang Min Hwan, giving Park Eun Bin and Yang Se Jong's occult romance a sharper love-triangle hook ahead of its second-half 2026 premiere.

PakApril 23, 2026
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