October 28, 2016 10:38 AM EDT

While fans may still be mourning Glenn Rhee’s brutal departure from The Walking Dead, Steven Yeun — who played the beloved zombie slayer — has already landed a new gig. During Thursday’s episode of Conan, the 32-year-old actor revealed that he has been standing in for O’Brien during the show’s rehearsals.

The host then aired Yeun’s best behind-the-scenes moments, including his attempt to Conan-coiff his hair and his reunion with fellow departed Walking Dead cast member Michael Cudlitz.

Watch the full clip below.


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Write to Megan McCluskey at megan.mccluskey@time.com.

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