William Sierra
Known for: Acting
William Matthew Sierra is an American former professional wrestling referee and manager better known by his ring name Bill Alfonso. He achieved his greatest success in Extreme Championship Wrestling in the mid-to-late 1990s. He is well known for the whistle that was almost always hanging around his neck, which he blew constantly during his wrestlers' matches In May 1995, he made his debut in Extreme Championship Wrestling as a "trouble-shooting referee".Introduced by Shane Douglas, he angered many ECW fans with strict enforcement of the rules and disqualifications of wrestlers for such ECW traditions as using steel chairs as weapons.n this role, he engaged in a feud with ECW founder Tod Gordon that resulted in several wrestling matches. Since the closing of ECW, Alfonso has appeared in several independent promotions. He worked one match in Xtreme Pro Wrestling as a referee. He has also worked in Elite Wrestling Entertainment as a referee and a manager,as well as managing wrestlers in Squared Circle Wrestling and Pro Wrestling Unplugged.In May 2007, he made his first appearance with Women's Extreme Wrestling, where he serves as a manager and as commissioner. On August 8, 2010, Alfonso took part in Total Nonstop Action Wrestling's ECW reunion show, Hardcore Justice, managing both Rob Van Dam and Sabu during their match against each other. On the following edition of TNA Impact!, the ECW alumni, known collectively as Extreme, Version 2.0 (EV 2.0), were assaulted by A.J. Styles, Kazarian, Robert Roode, James Storm, Douglas Williams and Matt Morgan of Ric Flair's Fourtune stable, who thought they didn't deserve to be in TNA. In October 2002, fellow manager Missy Hyatt sued Alfonso in a case televised on Judge Mathis. She accused Alfonso of damaging her Porsche and was awarded $500. Alfonso is not the only person in his family to have a career in the Professional Wrestling sport, his step brother, former Olympian Bob Roop also spent many years as a wrestler fighting all over the world under a variety of names and gimmicks while his cousin David Sierra has also enjoyed a long career in the ring including a stint in WCW as Fidel Sierra where he is remembered for a controversial feud with Hacksaw Jim Duggan. However, contrary to popular belief, Alfonso is not related to Mike Awesome with whom he spent time with in ECW. The confusion is thought to have stemmed from the fact that Awesome's real surname was Alfonso and the fact that he wrestled in Japan as The Gladiator, a name that Alfonso's real brother Bob Roop also used during his career.
Filmography
Series
Raw
Bill Alfonso
1993
Series
WWF Wrestling Challenge
Bill Alfonzo
1986
Series
Mid-Atlantic Championship Wrestling
Bill Alfonso (Referee)
1981
Film
ECW Big Ass Extreme Bash 1996
Bill Alfonso
1996
Film
ECW Hardcore Heaven 1995
Bill Alfonso (Troubleshooting Referee)
1995
Film
GCW: Joey Janela's Spring Break X
Bill Alfonso
2026
Film
ECW Holiday Hell 1995
Bill Alfonso (Manager)
1995
Film
WWE: Undertaker 20-0 - The Streak
Bill Alfonso - Referee (archive footage)
2012
Film
ECW Hardcore Heaven 1999
Bill Alfonso (Manager)
1999
Film
WWE Bloopers Bleeps and Bodyslams
Bill Alfonso
1994
ECW Heat Wave 1997
Bill Alfonso (Manager)
1997
Battleground Championship Wrestling Presents ECW Reunion Show: A Tribute To The Extreme 2
Bill Alfonso
2024
Film
ECW Guilty as Charged 2000
Bill Alfonso (Manager)
2000
Film
ECW A Matter of Respect 1996
Bill Alfonso (Manager)
1996
Film
ECW A Matter of Respect 1998
Bill Alfonso (Manager)
1998
Film
ECW November To Remember 1998
Bill Alfonso (Manager)
1998
Film
ECW: Extreme Evolution
Bill Alfonso (Manager)
2000
Film
ECW Hostile City Showdown 1996
Bill Alfonso
1996
ECW Fan Cam: October 31, 1997
Bill Alfonso (Manager)
1997
Film
ECW November to Remember 1996
Bill Alfonso
1996
Film
WWA The Revolution
Bill Alfonso
2002
Film
ECW The Doctor Is In 1996
Bill Alfonso
1996
Film
ECW Hardcore Heaven 1997
Bill Alfonso (Manager)
1997
Film
ECW It Ain't Seinfeld
Bill Alfonso (Manager)
1998
Film
The WRLD on GCW
Bill Alfonso
2022
WrestleCade Supershow 2019
Bill Alfonso
2019
Film
ECW Guilty as Charged 1999
Bill Alfonso
1999
Film
WWE: Blood Sport ECW - The Most Violent Matches
2006
Film
ECW House Party 1998
Bill Alfonso
1998
Film
ECW Living Dangerously 1998
Bill Alfonso
1998
Film
ECW Barely Legal 1997
Bill Alfonso (Manager)
1997
Film
ECW CyberSlam 1998
Bill Alfonso (Manager)
1998
Film
ECW Living Dangerously 1999
Bill Alfonso (Manager)
1999
Film
ECW Crossing The Line 1999
Bill Alfonso
1999
Film
ECW Hardcore Heaven 1996
Bill Alfonso
1996
Film
ECW November to Remember 1995
Bill Alfonso
1995
The Best of The Eliminators
Bill Alfonso (Manager)
1998
Film
ECW: Bloodsport The Most Violent Matches
Bill Alfonso
2006
Film
ECW Born To Be Wired
Bill Alfonso
1997
Film
ECW Wrestlepalooza 1997
Bill Alfonso (Manager)
1997
Battleground Championship Wrestling
Bill Alfonso
2021
Film
ECW Wrestlepalooza 1998
Bill Alfonso
1998
Film
ECW Gangstas Paradise 1995
Bill Alfonso (Troubleshooting Referee)
1995
Film
ECW Barbed Wire, Hoodies and Chokeslams
Bill Alfonso (State Appointed Referee)
1995
Film
ECW November to Remember 1999
Bill Alfonso (Manager)
1999
Film
ECW Hardcore History
Bill Alfonso (Referee)
2001
Film
ECW As Good As It Gets
Bill Alfonso
1997
Film
ECW Living Dangerously 2000
Bill Alfonso
2000
MECW Inaugural Show
2001
Film
ECW Enter the Sandman 1995
Bill Alfonso (Troubleshooting Referee)
1995
Film
ECW Holiday Hell 1996
Bill Alfonso
1996
Film
ECW Anarchy Rulz 1999
Bill Alfonso (Manager)
1999
Film
ECW House Party 1999
Bill Alfonso
1999
ECW Fan Cam: March 7, 1998
Bill Alfonso (Manager)
1998
ECW High Incident
Bill Alfonso (Manager)
1996
Film
Bret "Hit Man" Hart
Bill Alfonso
1994
ECW Fan Cam: April 4, 1997
Bill Alfonso (Manager)
1997
Film
WWE Bashed in the USA
Bill Alfonso
1993
Film
ECW Massacre on Queens BLVD
Bill Alfonso (Manager)
1996
Film
ECW Natural Born Killaz
Bill Alfonso (Manager)
1996
ECW Fan Cam: October 18, 1996
Bill Alfonso (Manager)
1996
Film
MLW Rise of The Renegades
2003
Film
ECW November to Remember 1997
Bill Alfonso (Manager)
1997
Film
ECW Big Apple Blizzard Blast
Bill Alfonso
1996
ECW Fan Cam: March 22, 1997
Bill Alfonso (Manager)
1997
Film
ECW CyberSlam 1996
Bill Alfonso
1996
Film
ECW CyberSlam 1999
Bill Alfonso (Manager)
1999
Film
MLW War Games
Bill Alfonso
2003
Film
Barbed Wire City: The Unauthorized Story of Extreme Championship Wrestling
Himself
2013
Film
ECW Heat Wave 1998
Bill Alfonso
1998
ECW Fan Cam: September 9, 2000
Bill Alfonso (Manager)
2000
Film
ECW Heat Wave 2000
Bill Alfonso (Manager)
2000
Film
ECW Anarchy Rulz 2000
Bill Alfonso (Manager)
2000
ECW When Worlds Collide 1996
Bill Alfonso
1996
Film
ECW Path of Destruction
Bill Alfonso (Manager)
2000
ECW Fan Cam: October 23, 1999
Bill Alfonso (Manager)
1999
Film
MLW Hybrid Hell
Bill Alfonso (Manager)
2003
Film
ECW Just Another Night 1996
Bill Alfonso
1996
Film
ECW House Party 1996
Bill Alfonso (Manager)
1996
Film
ECW Heat Wave 1995
Bill Alfonso (Troubleshooting Referee)
1995
ECW Fan Cam: May 3, 1997
Bill Alfonso (Manager)
1997
ECW Fan Cam: May 10, 1996
Bill Alfonso (Manager)
1996
Film
ECW Ultimate Jeopardy 1996
Bill Alfonso
1996
ECW Fan Cam: May 2, 1997 (Barely Legal II)
Bill Alfonso (Manager)
1997
ECW Fan Cam: July 28, 1996
Bill Alfonso
1996
ECW Fan Cam: June 3, 2000
Bill Alfonso (Manager)
2000
ECW Sunshine State Slaughter
Bill Alfonso (Troubleshooting Referee)
1995
The Best of Shane Douglas
Bill Alfonso (Manager)
1998
Film
ECW Mountain Top Madness
Bill Alfonso
1995
ECW: January 27, 1996
Bill Alfonso (Appearance)
1996
Film
ECW Heat Wave 1999
Bill Alfonso
1999
ECW Fan Cam: February 14, 1997
Bill Alfonso (Manager)
1997
Film
Hardcore Homecoming
Bill Alfonso (Manager)
2005
ECW Fan Cam: November 23, 1996
Bill Alfonso (Manager)
1996
ECW Fan Cam: May 16, 1997
Bill Alfonso (Appearance)
1997
ECW Fan Cam: January 27, 2000
Bill Alfonso
2000
ECW Fan Cam: December 17, 1999
Bill Alfonso (Manager)
1999
Film
ECW Extreme Warfare Vol. 2
Bill Alfonso
1996
ECW: The Best of Cactus Jack
Bill Alfonso
2001
ECW Fan Cam: May 29, 1999
Bill Alfonso (Manager)
1999
ECW Fan Cam: January 30, 1999
Bill Alfonso (Manager)
1999
ECW Fan Cam: February 6, 1999
Bill Alfonso (Manager)
1999
ECW Fan Cam: August 25, 2000
Bill Alfonso (Manager)
2000
ECW Fan Cam: October 15, 1999
Bill Alfonso (Manager)
1999
ECW Fan Cam: September 17, 1998
Bill Alfonso (Manager)
1998
Film
The Ref Didn’t See It!
Bill Alfonso
2025
ECW Fan Cam: September 23, 1995
Bill Alfonso (Referee)
1995