/ Courtesy of MBC



Conan O'Brien has made a special appearance in MBC TV drama "Happy Once Again."





Conan O'Brien / Courtesy of MBC



He posted a photo on Instagram with actress Jang Na-ra, who stars in the drama, saying: "Had the honor of appearing on Korean soap opera ‘Happy Once Again' with the beautiful Na-ra Jang. She was great. I was terrible."





/ Screen capture from Kakao Story



MBC has not revealed O'Brien's role, but his character's name is "Kim Go-nan," it said. The episode airs Thursday.





/ Screen capture from Kakao Story



O'Brien also donated a live octopus he bought at Norayngjin Fish Market in Seoul on Monday to COEX Aquarium.

He named it "Samuel."

.