This guy is Leif GW Persson is an imminent criminologist, and a writer. He has published a lot of police books, with his principal character : " Lars Martin Johansson. " In this video you'll don't see Leif for his brilliant mind, but for his growls ! 😀 This compilation is so funny, when he talks he always do this type of sounds really weird, and one guy ( thanks internet ) has made one compilation of that.