Claim: BoJack Horseman is a series.

William Emerson Arnett -LRB- -LSB- ɑːrˈnɛt -RSB- born May 4 , 1970 -RRB- 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 Lego Movie , 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 .