15. Paul "Paulie Walnuts" Gualtieri from The Sopranos (1999-2007, HBO)
Played by: Tony Sirico
One of Tony Soprano’s closest associates, Paulie Walnuts is also the beloved HBO show’s most volatile mobster. With a quick temper and aversion to nearly everyone he has ever met, Paulie was an unpredictable member of the Soprano crime family. Regardless of his years of service, Paulie always felt like he was being looked over when it came to promotions within the family. He was hard-working and loyal, but he was always too hot-headed to really get the respect he deserved. Yet, even though that flaw was his Achilles heel, that's what made him so compelling.