Mather Zickel (born March 10, 1974, in New York, New York) is an American actor, writer, and comedian, 6′ 0″ (183 cm) tall, who graduated from Harvard University and studied at the Juilliard School. He is a member of The Groundlings in Los Angeles and has been active since 1997, accumulating over 80 film and television credits. He is married to actress Melanie Lynskey and they have two children.
His most notable film credits include a role in 21 Jump Street (2012, with Channing Tatum and Jonah Hill), a role in 22 Jump Street (2014), a role in Bad Neighbors (2014, with Seth Rogen and Zac Efron), a role in Bad Neighbors 2 (2016), and a role in The Nice Guys (2016, with Russell Crowe and Ryan Gosling). On television he is best known as a recurring character in It's Always Sunny in Philadelphia (2005–present), Childrens Hospital (2008–2016), Drunk History (2013–2019), and What We Do in the Shadows (2019–2025, FX), with additional credits in Arrested Development (2013), Brooklyn Nine-Nine (2015), Veep (2016), Shrill (2017), What If... (2021, Marvel), and The Afterparty (2022–2023, Peacock). He has also written and produced for Childrens Hospital and Drunk History, and directed episodes of What We Do in the Shadows.
as Day One
as Niccolo
as Boston Newscaster
as Pa
as Distribution Executive
as Frank(3 eps)
as The Assistant Director
as Romeo Dunn(2 eps)
as James
as Rafferty(2 eps)
as James
as Richard Hart / Jimmy Capone(1 ep)
as Chunk Mulligan
as Lucas
as Richard Caldwell(9 eps)
as Dr. Frederick Gardner(1 ep)
as George Johnson(6 eps)
as Louis LaFonda(10 eps)
as Hank Prince(1 ep)
as Brock(2 eps)
as Jim Stansel
as Michael Carlson(6 eps)
as Will Keen(13 eps)
as Simon
as Loomis
as Travis Hall(6 eps)
as Dr. Leonard Walker(2 eps)
as Scooter(1 ep)
as Captain Brian(1 ep)
as Jack Kozkowski(1 ep)
as Gil
as Guy Stennislaus(1 ep)
as Rob the New Federal Agent(12 eps)
as Louis La Fonda(3 eps)
as Kieran
as Louis La Fonda
as Alan
as Aldo Clemens(4 eps)
as Jack Storm
as Calvin Linden(1 ep)
as Executive(1 ep)
as Mike Powers(7 eps)
as Bill Murray
as Ike
as John Valentine(1 ep)
as Rocker