William Thomas Hader Jr. is an American actor, comedian, and filmmaker. He was a cast member on the NBC sketch comedy series Saturday Night Live from 2005 to 2013, for which he received four Primetime Emmy Award nominations and a Peabody Award. He became known for his impressions and especially for his work on the Weekend Update segments, where he played Stefon, a flamboyant New York City nightclub tour guide. He is also known for voicing Fear in the Pixar animated film Inside Out (2015), and Flint Lockwood in Cloudy with a Chance of Meatballs (2009), and its 2013 sequel.