Ji Seong

Ji Sung is one of those actors who just keeps raising the bar — every time you think you've seen his best work, he comes back with something wilder. Kill Me, Heal Me (2015) is genuinely one of the most demanding performances I've seen in Korean television: he plays a man with dissociative identity disorder across multiple distinct personalities, and he pulled it off without it feeling like a gimmick for a single episode. But he's not a one-trick virtuoso either — Innocent Defendant (2017) showed how well he handles straight-up legal thriller tension, and The Devil Judge (2021) leaned into a darker, morally ambiguous charisma that not many actors his age can carry. Hanyang University trained him well. He's been at this for over two decades and somehow still feels fresh.

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Name (English)

Ji Seong

Name (Japanese)

チソン

Reading

ちそん

Born

February 27, 1977 (age 49)

Origin

Seoul, South Korea

Occupation

film actor / actor / television actor

Zodiac / Chinese zodiac

Pisces / Snake

University

Hanyang University

• Instagramhttps://www.instagram.com/justin_jisung/
• Wikipedia (English)https://en.wikipedia.org/wiki/Ji%20Sung
• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E3%83%81%E3%82%BD%E3%83%B3
• Wikidatahttps://www.wikidata.org/wiki/Q491763

Tags

• film actor
• actor
• television actor

Last updated

September 18, 2026

Facts are limited to publicly available information up to 2024; non-public or unconfirmed items are omitted. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.