You’re a mean one, Mr. Eichner.

New Girl has signed Billy on the Street/Parks and Recreation cutup Billy Eichner to guest-star as a Grinch-like character in the Fox comedy’s Christmas episode, TVLine has learned.

Eichner will play Barry, a beleaguered airline representative the gang encounters at the airport; he’s tired of dealing with holiday travelers and Christmas itself.

New Girl‘s X-mas outing is scheduled to air on Dec. 9.