Paul Jeffrey Byrne (born December 15, 1974) is an American actor. He is best known for his roles as Nicky "Rugrat" Koskoff in the Martin Scorsese film The Wolf of Wall Street (2013); Irv Smiff on the UPN/CW series The Game; and Bolin on Nickelodeon's animated series The Legend of Korra (2012–2014). Description above from the Wikipedia article P.J. Byrne, licensed under CC-BY-SA, full list of contributors on Wikipedia.