Zach Galifianakis has joined the cast of 'Only Murders in the Building' for its fourth season as a recurring character, as confirmed by multiple sources. The show, which airs on Hulu, continues to add big names to its roster, with Galifianakis being the latest addition to Hulu's comedy series. He joins other new cast members including Eugene Levy, Eva Longoria, Kumail Nanjiani, and Molly Shannon. 'Only Murders in the Building' has gained popularity for its blend of comedy and mystery, and the inclusion of Galifianakis, known for his role in 'The Hangover' trilogy, is expected to add to the show's appeal.