William Emerson Arnett (ɑːrˈnɛt; born May 4, 1970) is a Canadian-American actor, voice actor and comedian. He is known for his role as George Oscar "Gob" Bluth II in the Fox series Arrested Development and Devon Banks in the NBC series 30 Rock, for which he was nominated for five Emmy Awards. He also appeared in the IFC series The Increasingly Poor Decisions of Todd Margaret, the NBC series Up All Night, and the CBS series The Millers, and in films such as Monster-in-Law, Semi-Pro, Blades of Glory, RV, Hot Rod, Let's Go to Prison, The Rocker, Monsters vs. Aliens, The Brothers Solomon, When in Rome, Jonah Hex, The Nut Job, Teenage Mutant Ninja Turtles, and Teenage Mutant Ninja Turtles: Out of the Shadows. Arnett is also known for his voice acting - he voices the title character of Netflix's original animated series BoJack Horseman, and also portrays Batman in The Lego Movie and its spin-off The Lego Batman Movie. He currently stars in Netflix's Flaked, a series he co-created with Mark Chappell.