This article is about the Real World.
Arnett has been known for his comedic roles as George Oscar "G.O.B." Bluth II in the Fox series Arrested Development, Devon Banks in the NBC series 30 Rock, Brent Wilts in the IFC series The Increasingly Poor Decisions of Todd Margaret, Chris Brinkley on Up All Night and Nathan Miller in the CBS series The Millers.
He has appeared in films such as Jonah Hex, Semi-Pro, Blades of Glory, RV, Hot Rod, Let's Go to Prison, The Brothers Solomon, The Lego Movie, Teenage Mutant Ninja Turtles, and its sequel, Out of the Shadows.
Arnett is also a voice actor for commercials, animated films, television cartoons, and video games.