William Sierra
Biography
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.
Known For
Raw
1993
WWF Wrestling Challenge
1986
0Mid-Atlantic Championship Wrestling
1981
ECW Barely Legal 1997
1997
ECW Big Ass Extreme Bash 1996
1996
ECW Guilty as Charged 1999
1999
WWE: Undertaker 20-0 - The Streak
2012
ECW The Doctor Is In 1996
1996
ECW Hardcore Heaven 1999
1999
ECW Holiday Hell 1996
1996
0ECW Holiday Hell 1995
1995
WWE: Blood Sport ECW - The Most Violent Matches
2006
Filmography
Raw
as Bill Alfonso · 1993
WWF Wrestling Challenge
as Bill Alfonzo · 1986
Mid-Atlantic Championship Wrestling
as Bill Alfonso (Referee) · 1981
ECW Barely Legal 1997
as Bill Alfonso (Manager) · 1997
ECW Big Ass Extreme Bash 1996
as Bill Alfonso · 1996
ECW Guilty as Charged 1999
as Bill Alfonso · 1999
WWE: Undertaker 20-0 - The Streak
as Bill Alfonso - Referee (archive footage) · 2012
ECW The Doctor Is In 1996
as Bill Alfonso · 1996
ECW Hardcore Heaven 1999
as Bill Alfonso (Manager) · 1999
ECW Holiday Hell 1996
as Bill Alfonso · 1996
ECW Holiday Hell 1995
as Bill Alfonso (Manager) · 1995
WWE: Blood Sport ECW - The Most Violent Matches
· 2006
ECW Massacre on Queens BLVD
as Bill Alfonso (Manager) · 1996
ECW A Matter of Respect 1996
as Bill Alfonso (Manager) · 1996
ECW Enter the Sandman 1995
as Bill Alfonso (Troubleshooting Referee) · 1995
ECW Heat Wave 2000
as Bill Alfonso (Manager) · 2000
ECW Mountain Top Madness
as Bill Alfonso · 1995
ECW Crossing The Line 1999
as Bill Alfonso · 1999
GCW: Joey Janela's Spring Break X
as Bill Alfonso · 2026
Battleground Championship Wrestling Presents ECW Reunion Show: A Tribute To The Extreme 2
as Bill Alfonso · 2024
ECW Gangstas Paradise 1995
as Bill Alfonso (Troubleshooting Referee) · 1995
WWE Bashed in the USA
as Bill Alfonso · 1993
ECW November to Remember 1996
as Bill Alfonso · 1996
ECW Hardcore Heaven 1995
as Bill Alfonso (Troubleshooting Referee) · 1995
ECW Anarchy Rulz 1999
as Bill Alfonso (Manager) · 1999
ECW November to Remember 1995
as Bill Alfonso · 1995
The WRLD on GCW
as Bill Alfonso · 2022
ECW CyberSlam 1998
as Bill Alfonso (Manager) · 1998
ECW Just Another Night 1996
as Bill Alfonso · 1996
ECW Big Apple Blizzard Blast
as Bill Alfonso · 1996
ECW Natural Born Killaz
as Bill Alfonso (Manager) · 1996
ECW Extreme Warfare Vol. 2
as Bill Alfonso · 1996
ECW Barbed Wire, Hoodies and Chokeslams
as Bill Alfonso (State Appointed Referee) · 1995
ECW House Party 1996
as Bill Alfonso (Manager) · 1996
WWE Bloopers Bleeps and Bodyslams
as Bill Alfonso · 1994
ECW Fan Cam: November 23, 1996
as Bill Alfonso (Manager) · 1996
Bret "Hit Man" Hart
as Bill Alfonso · 1994
ECW Hostile City Showdown 1996
as Bill Alfonso · 1996
ECW Anarchy Rulz 2000
as Bill Alfonso (Manager) · 2000
ECW House Party 1999
as Bill Alfonso · 1999
ECW Hardcore Heaven 1997
as Bill Alfonso (Manager) · 1997
MLW Rise of The Renegades
· 2003
ECW Hardcore Heaven 1996
as Bill Alfonso · 1996
ECW Fan Cam: May 2, 1997 (Barely Legal II)
as Bill Alfonso (Manager) · 1997
ECW November To Remember 1998
as Bill Alfonso (Manager) · 1998
ECW Guilty as Charged 2000
as Bill Alfonso (Manager) · 2000
ECW It Ain't Seinfeld
as Bill Alfonso (Manager) · 1998
ECW: The Best of Cactus Jack
as Bill Alfonso · 2001
The Best of The Eliminators
as Bill Alfonso (Manager) · 1998
ECW: Bloodsport The Most Violent Matches
as Bill Alfonso · 2006
ECW Sunshine State Slaughter
as Bill Alfonso (Troubleshooting Referee) · 1995
ECW Fan Cam: May 3, 1997
as Bill Alfonso (Manager) · 1997
ECW Heat Wave 1999
as Bill Alfonso · 1999
ECW Fan Cam: June 3, 2000
as Bill Alfonso (Manager) · 2000
ECW November to Remember 1997
as Bill Alfonso (Manager) · 1997
ECW CyberSlam 1996
as Bill Alfonso · 1996
ECW Fan Cam: May 10, 1996
as Bill Alfonso (Manager) · 1996
ECW Living Dangerously 2000
as Bill Alfonso · 2000
ECW House Party 1998
as Bill Alfonso · 1998
ECW Born To Be Wired
as Bill Alfonso · 1997
ECW Heat Wave 1995
as Bill Alfonso (Troubleshooting Referee) · 1995
ECW Fan Cam: July 28, 1996
as Bill Alfonso · 1996
ECW Living Dangerously 1998
as Bill Alfonso · 1998
ECW When Worlds Collide 1996
as Bill Alfonso · 1996
MLW War Games
as Bill Alfonso · 2003
ECW Heat Wave 1997
as Bill Alfonso (Manager) · 1997
ECW A Matter of Respect 1998
as Bill Alfonso (Manager) · 1998
ECW November to Remember 1999
as Bill Alfonso (Manager) · 1999
ECW As Good As It Gets
as Bill Alfonso · 1997
ECW Heat Wave 1998
as Bill Alfonso · 1998
ECW Living Dangerously 1999
as Bill Alfonso (Manager) · 1999
ECW Fan Cam: April 4, 1997
as Bill Alfonso (Manager) · 1997
ECW Fan Cam: October 18, 1996
as Bill Alfonso (Manager) · 1996
ECW Path of Destruction
as Bill Alfonso (Manager) · 2000
ECW Wrestlepalooza 1998
as Bill Alfonso · 1998
ECW Fan Cam: February 14, 1997
as Bill Alfonso (Manager) · 1997
ECW Fan Cam: January 30, 1999
as Bill Alfonso (Manager) · 1999
ECW Fan Cam: September 17, 1998
as Bill Alfonso (Manager) · 1998
ECW Hardcore History
as Bill Alfonso (Referee) · 2001
ECW Fan Cam: May 16, 1997
as Bill Alfonso (Appearance) · 1997
ECW Fan Cam: October 31, 1997
as Bill Alfonso (Manager) · 1997
ECW Wrestlepalooza 1997
as Bill Alfonso (Manager) · 1997
ECW Fan Cam: September 9, 2000
as Bill Alfonso (Manager) · 2000
ECW Fan Cam: October 15, 1999
as Bill Alfonso (Manager) · 1999
ECW Fan Cam: August 25, 2000
as Bill Alfonso (Manager) · 2000
ECW Ultimate Jeopardy 1996
as Bill Alfonso · 1996
ECW: January 27, 1996
as Bill Alfonso (Appearance) · 1996
ECW High Incident
as Bill Alfonso (Manager) · 1996
ECW Fan Cam: January 27, 2000
as Bill Alfonso · 2000
WWA The Revolution
as Bill Alfonso · 2002
ECW Fan Cam: October 23, 1999
as Bill Alfonso (Manager) · 1999
ECW Fan Cam: September 23, 1995
as Bill Alfonso (Referee) · 1995
ECW Fan Cam: March 7, 1998
as Bill Alfonso (Manager) · 1998
ECW Fan Cam: February 6, 1999
as Bill Alfonso (Manager) · 1999
ECW: Extreme Evolution
as Bill Alfonso (Manager) · 2000
ECW Fan Cam: December 17, 1999
as Bill Alfonso (Manager) · 1999
MLW Hybrid Hell
as Bill Alfonso (Manager) · 2003
ECW Fan Cam: March 22, 1997
as Bill Alfonso (Manager) · 1997
The Best of Shane Douglas
as Bill Alfonso (Manager) · 1998
ECW Fan Cam: May 29, 1999
as Bill Alfonso (Manager) · 1999
MECW Inaugural Show
· 2001
Battleground Championship Wrestling
as Bill Alfonso · 2021
ECW CyberSlam 1999
as Bill Alfonso (Manager) · 1999
WrestleCade Supershow 2019
as Bill Alfonso · 2019
Hardcore Homecoming
as Bill Alfonso (Manager) · 2005
The Ref Didn’t See It!
as Bill Alfonso · 2025
Barbed Wire City: The Unauthorized Story of Extreme Championship Wrestling
as Himself · 2013