* Translated by AI

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'Rat' Lee Gyu-hyung bulked up then dropped 10kg "Borrowing strength from modern medicine" [Star Scene]

Published:

Kim Nayeon

*This content was translated by AI.

Actor Lee Gyu-hyung poses at the Netflix original series 'Rat' press conference held on the morning of the 20th at Naru Seoul Hotel's M Gallery in Mapo-gu, Seoul. The tracking thriller 'Rat', which tells the story of a mysterious figure called 'Rat' who steals the name, face, and life of novelist 'Moon Jae', loan shark 'No Ja' trying to recover lost money, and detective 'Soon-yong' as they chase the identity of Rat, will be released on the 28th. /2026.08.20 /Photo=Lee Dong-hoon photoguy@
Actor Lee Gyu-hyung poses at the Netflix original series 'Rat' press conference held on the morning of the 20th at Naru Seoul Hotel's M Gallery in Mapo-gu, Seoul. The tracking thriller 'Rat', which tells the story of a mysterious figure called 'Rat' who steals the name, face, and life of novelist 'Moon Jae', loan shark 'No Ja' trying to recover lost money, and detective 'Soon-yong' as they chase the identity of Rat, will be released on the 28th. /2026.08.20 /Photo=Lee Dong-hoon photoguy@

Actor Lee Gyu-hyung revealed how he lost 10kg for his character in 'Rat'.

The production conference for the Netflix series 'Rat' was held on the 20th at Naru Seoul Hotel's M Gallery in Mapo-gu, Seoul. Director Kim Hong-seon and actors Ryu Jun-yeol, Seol Kyung-gu, and Lee Gyu-hyung attended the event.

'Rat' is a tracking thriller that follows novelist 'Moon Jae', who has had his name, face, and life completely stolen by a mysterious figure called 'Rat'; loan shark 'No Ja', who seeks to recover lost money; and detective 'Soon-yong', as they chase the identity of Rat.

Lee Gyu-hyung plays the role of detective 'Soon-yong', who relentlessly pursues the truth behind the case to uncover the identity of 'Rat'.

Regarding his reason for choosing the project, Lee Gyu-hyung said, "When I first read the script, I wondered why the plot was moving so fast. Before I knew it, I had already passed the sixth episode."

He continued, "In today's society, personal information is overflowing, and the thought that someone could take over my life gave me chills. At that moment, I felt I absolutely had to do this role."

Especially, Lee Gyu-hyung drew attention by revealing that he lost about 10kg for his character 'Soon-yong'.

He explained, "In the original script, the character was portrayed as someone who fights well and has rough, violent traits, so I initially gained weight. I bulked up."

However, just a short time before filming began, after meeting with the director, the direction changed completely. Lee Gyu-hyung said, "The director looked at me and asked, 'Why did you get like this? I wanted you to look sharper.' He told me to lose weight again, so from that point on, I had no choice but to drop my weight rapidly."

He then joked, "It would have been better if he had told me sooner," eliciting laughter.

Lee Gyu-hyung stated frankly, "I borrowed the power of modern medicine. It was an unavoidable situation. I tried everything—three-character and four-character methods." He added, "It hurt a lot. Now I am maintaining my reduced weight."

Director Kim Hong-seon explained about Lee Gyu-hyung's character: "He is someone full of anger, dissatisfaction, and sharpness, so naturally, I thought he would lose weight." He continued, "I have seen the wide spectrum of acting that actor Lee Gyu-hyung has shown over the years, and I believed he would excel in this role, which is why I trusted him for the casting."

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*This content was translated by AI.

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